Let's use the variable "x" to represent the number of 3-inch bolts that James bought.
We know that he bought a total of 16 bolts, so the number of 4-inch bolts he bought would be 16 - x.
The cost of the 3-inch bolts is 36 cents each, so the total cost of the 3-inch bolts would be 0.36x dollars.
Similarly, the cost of the 4-inch bolts is 42 cents each, so the total cost of the 4-inch bolts would be 0.42(16 - x) dollars.
We know that the total cost of all the bolts was $6.00, so we can set up the following equation:
0.36x + 0.42(16 - x) = 6.00
Simplifying and solving for x, we get:
0.36x + 6.72 - 0.42x = 6.00
-0.06x = -0.72
x = 12
Therefore, James bought 12 of the 3-inch bolts.
The point (8, −15) was reflected over an axis to (−8, −15). Which axis was it reflected over? Explain.
Answer: it is reflected by y-axis
Step-by-step explanation: as we know when point (x,y) reflected by y axis the value of y remains the same and the sign of x will be changed since the image is rotated horizontaly
Answer:
y-axis
Step-by-step explanation:
When a point is reflected over the y-axis, the x-coordinate of the point becomes the additive inverse of the original number.
Here, (8, -15) became (-8, -15). The only change in value of the coordinates is the value of the x-coordinate, 8, which became its additive inverse, -8.
Answer: y-axis
Answer: it is reflected by y-axis
Step-by-step explanation: as we know when point (x,y) reflected by y axis the value of y remains the same and the sign of x will be changed since the image is rotated horizontaly
Answer:
y-axis
Step-by-step explanation:
When a point is reflected over the y-axis, the x-coordinate of the point becomes the additive inverse of the original number.
Here, (8, -15) became (-8, -15). The only change in value of the coordinates is the value of the x-coordinate, 8, which became its additive inverse, -8.
Answer: y-axis
An adult patient has come into the burn unit during your shift. You take an inventory of the location of their burns in the chart below.
Part of Body Burned?
(1 = yes, 0 = no)
Head 1
Left Arm 1
Right Arm 1
Upper Front Torso 0
Upper Back Torso 0
Lower Front Torso 1
Lower Back Torso 1
Upper Left Leg 0
Upper Right Leg 0
Lower Left Leg 0
Lower Right Leg 1
Given that their weight/mass is 50.9 kg, determine how much fluid they should receive per hour in the first 8 hours of their care. Answer to the nearest hundredth of a liter (two decimal places). ( Please help me by showing work, thank you!)
Answer:
To determine the fluid replacement rate for a burn patient in the first 8 hours, we can use the Parkland formula:
Fluid (in liters) = 4 mL × body weight in kg × % total body surface area (TBSA) burned
First, we need to calculate the TBSA burned. We can use the Rule of Nines to estimate this:
Head: 9%
Left Arm: 9%
Right Arm: 9%
Upper Front Torso: 0%
Upper Back Torso: 0%
Lower Front Torso: 18%
Lower Back Torso: 18%
Upper Left Leg: 0%
Upper Right Leg: 0%
Lower Left Leg: 0%
Lower Right Leg: 9%
Total TBSA burned = 9 + 9 + 9 + 18 + 18 + 9 = 72%
Now we can plug in the values into the Parkland formula:
Fluid (in liters) = 4 mL × 50.9 kg × 72% = 14,694.72 mL
To convert mL to liters, we divide by 1000:
Fluid (in liters) = 14,694.72 mL ÷ 1000 = 14.69 L
This is the total amount of fluid the patient needs in the first 8 hours. To determine the hourly rate, we divide by 8:
Hourly fluid rate = 14.69 L ÷ 8 = 1.84 L/hour
Therefore, the patient should receive approximately 1.84 liters of fluid per hour in the first 8 hours of their care.
Explain the effect of China's fiscal stimulus on global aggregate demand and why it might have lost some of its force. Part 2 China's fiscal stimulus increases global aggregate demand because it _________. This fiscal stimulus might have lost some of its force because _______. A. increases world saving; the stimulus decreases China's government budget surplus and raises the world real interest rate B. increases China's potential GDP and income, which increases other countries exports to China; China's government debt is growing C. raises the value of the Chinese yuan, which increases China's purchases of imports in the long run; China is becoming more self-sufficient D. increases China's GDP and imports, which increases other countries exports to China; trade restrictions limits China's imports
Answer:
China's fiscal stimulus increases global aggregate demand because it increases China's GDP and imports, which increases other countries' exports to China. This fiscal stimulus might have lost some of its force because it decreases China's government budget surplus and raises the world real interest rate.
Step-by-step explanation:
hope this helps
i need the answer to this question
Answer:
Area of annulus is 40.85cm² to 2d.p
Step-by-step explanation:
Area of shaded part=Area of bigger circle -Area of smaler circle
Area of annulus= πR²- πr²= π(R²-r²)
A=3.142(7²-6²)
A=3.142(49-36)
A=3.142×13
A=40.846cm²
A=40.85cm² to 2d.p
Use the Quadratic Formula to solve 2x2 + 6x = –3. Which of the following gives the solutions to the nearest hundredth?
A. 2.37 and 0.63
B. 2.37 and –0.63
C. –2.37 and 0.63
D. –2.37 and –0.63
Answer:
First, we need to put the equation in standard form, which is ax^2 + bx + c = 0. So, we have 2x^2 + 6x + 3 = 0.
Using the Quadratic Formula, x = (-b ± sqrt(b^2 - 4ac)) / 2a, we can plug in the values for a, b, and c:
x = (-6 ± sqrt(6^2 - 4(2)(3))) / 2(2)
x = (-6 ± sqrt(36 - 24)) / 4
x = (-6 ± sqrt(12)) / 4
Simplifying further, we have:
x = (-6 ± 2sqrt(3)) / 4
x = (-3 ± sqrt(3)) / 2
To the nearest hundredth, the solutions are:
A. 2.37 and 0.63
The doubling time of a bank account balance is 10 years. By what factor does the balance grow in 30 years?
The doubling time of a bank account balance is the amount of time it takes for the balance to double. In this case, the doubling time is 10 years, which means that the balance will double every 10 years.
Let's say the initial balance in the bank account is B. After 10 years, the balance will have doubled to 2B. After another 10 years (i.e., 20 years from the initial balance), the balance will have doubled again to 4B. Finally, after another 10 years (i.e., 30 years from the initial balance), the balance will have doubled one more time to 8B.
Therefore, after 30 years, the balance in the bank account will have grown by a factor of 8B/B, which simplifies to just 8. This means that the balance in the bank account will be 8 times the initial balance after 30 years.
To summarize, the balance in the bank account will double every 10 years due to the given doubling time. After 30 years, it will have doubled three times, resulting in a growth factor of 2 x 2 x 2 = 8, which means the balance will be 8 times the initial balance.
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Break-Even Sales
BeerBev, Inc., reported the following operating information for a recent year (in millions):
Sales $6,512
Cost of goods sold $1,628
Gross profit $4,884
Marketing, general, and admin. expenses 592
Income from operations $ 4,292
Assume that BeerBev sold 37 million barrels of beer during the year, that variable costs were 75% of the cost of goods sold and 50% of marketing, general and administration expenses, and that the remaining costs are fixed. For the following year, assume that BeerBev expects pricing, variable costs per barrel, and fixed costs to remain constant, except that new distribution and general office facilities are expected to increase fixed costs by $21.09 million.
a. Compute the break-even sales (in barrels) for the current year. Round your answer to two decimal places. Enter your answers in millions.
Answer:
Step-by-step explanation:
To compute the break-even sales (in barrels) for the current year, we need to first determine the contribution margin per barrel, which is the amount left over from the selling price of each barrel of beer after variable costs are subtracted.
Variable costs per barrel can be calculated as 75% of the cost of goods sold per barrel, which is:
Variable cost per barrel = (75% x Cost of goods sold) / Barrels sold
Variable cost per barrel = (0.75 x $1,628 million) / 37 million barrels
Variable cost per barrel = $33.00
Similarly, the variable marketing, general, and administration expenses per barrel can be calculated as:
Variable marketing, general, and administration expenses per barrel = (50% x Marketing, general, and administration expenses) / Barrels sold
Variable marketing, general, and administration expenses per barrel = (0.50 x $592 million) / 37 million barrels
Variable marketing, general, and administration expenses per barrel = $8.00
Therefore, the contribution margin per barrel is:
Contribution margin per barrel = Selling price per barrel - Variable costs per barrel
Contribution margin per barrel = $6,512 million / 37 million barrels - $33.00 - $8.00
Contribution margin per barrel = $98.00
To compute the break-even sales (in barrels) for the current year, we can use the following formula:
Break-even sales (in barrels) = Fixed costs / Contribution margin per barrel
Fixed costs can be calculated as:
Fixed costs = Income from operations + Variable marketing, general, and administration expenses x Barrels sold - Contribution margin per barrel x Barrels sold
Fixed costs = $4,292 million + $8.00 x 37 million barrels - $98.00 x 37 million barrels
Fixed costs = $1,108 million
Substituting this into the formula, we get:
Break-even sales (in barrels) = $1,108 million / $98.00 per barrel
Break-even sales (in barrels) = 11.29 million barrels
Rounding this to two decimal places and converting to millions, we get:
Break-even sales (in barrels) = 11.29 million barrels = 11.3 million barrels (rounded)
There are approximately 7.48 liquid gallons in a cubic foot. If a cylindrical water tank holds 1,500 liquid gallons and has a radius of 3.4 feet, what is the approximate height of the water tank? Approximate using π = 3.14 and round to the nearest tenth.
In the cylinder , height of the water tank is 5.5 feet.
What is volume?
The space taken up by any three-dimensional solid constitutes a volume, to put it simply. A cube, cuboid, cone, cylinder, or sphere can be one of these solids. Cubic units are used to measure the volume of solids. The volume will be given in cubic metres, for instance, if the dimensions are given in metres.
Given that,
A cubic foot contains roughly 7.48 liquid gallons.
We have to find what is roughly the height of a cylindrical water tank with a capacity of 1,500 liquid gallons and a radius of 3.4 feet.
We know that,
7.48 liquid gallons are contained in one cubic foot.
The cylindrical water tank's radius is 3.4 feet.
1,500 liquid gallons are the maximum capacity.
The cylindrical water tank's volume is calculated to hold 1500 liquid gallons ,
= [tex]\frac{1500}{7.48}[/tex]
= 200.53 ft³
Volume of the cylinder= πr²h
=> 200.53= 3.14 ×3.4×3.4×h
=> 200.53 = 3.14 × 11.56 × h
=> 200.53 = 36.29 × h
=> h= 5.5
=> h= 5.5 feet (Approximately)
Therefore, height of the water tank is 5.5 feet.
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express 2x^2-10x+8 in the form of a(x+b)^2+c where abc are constants and use your answer to state the minimum value of y=2x^2-10x+8
For the given quadratic equation, the value of constant abc is 45/8.
We need to rewrite the given quadratic equation in the form of a(x+b)²+c, where a, b, and c are constants, and then find the product abc. To do this, we'll complete the square.
Given quadratic equation: 2x² -10x+8
Follow these steps to determine the product:
1: Divide the entire equation by the leading coefficient 2:
x² -5x+4
2: Add and subtract the square of half the linear coefficient inside the parentheses. Half of 5 is 5/2, and (5/2)² is 25/4:
x² - 5x + 25/4 - 25/4 + 4
3: Combine the terms and rewrite the equation in the form a(x+b)²+c:
(1)(x - 5/2)² - 9/4
4: Now, we can see that a = 1, b = -5/2, and c = -9/4. So the product abc is:
abc = (1)(-5/2)(-9/4) = (45/8)
Therefore, the value of abc is 45/8.
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What are the zeros in this function?
The zeros of the function are:
-¹/₂ ± √((3)/2) i, 1/3 and - 2
What are the zeros of the polynomial?We want to find the Zeros of the polynomial:
f(x) = 3x⁴ + 8x³ + 6x² + 3x - 2
By the rational root theorem, we know that any rational zeros of f(x) must be expressible in the form p/q for integers p,q with p a divisor of the constant term −2 and q a divisor of the coefficient 3 of the leading term.
Therefore, the only possible rational zeros are:
±¹/₃, ±²/₃, ±1, ±2
Let's check x = 1/3 to get:
f(¹/₃) = 3(¹/₃)⁴ + 8(¹/₃)³ + 6(¹/₃)² + 3(¹/₃) - 2 = 0
f(-2) = 3(-2)⁴ + 8(-2)³ + 6(-2)² + 3(-2) - 2 = 0
Thus, x = 1/3 and - 2 are zeros of the function and (3x - 1) and (x + 2) are factors.
Using these factors and using the polynomial to divide them, we have that the remaining factor is: x² + x + 1
The zeros of x² + x + 1 are the Complex cube roots of 1, since
(x - 1)(x² + x + 1) = x³ - 1
using the quadratic formula, we have:
x = -¹/₂ ± √((3)/2) i
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A clothing retailer is interested in the average waist size of men. A sample is taken with the results given below.
please see the attached image for more info on the question
The confidence interval is given as (38.811,43.829)
What is a Margin of Error?In statistics, a margin of error refers to the degree of imprecision that can be projected in survey or polling outcomes due to random sampling involved in such studies.
This indicator serves as both the measure for the accuracy of results and an assurance of confidence in them. The percentage rate expressing the magnitude of the latter varies inversely with the former and depends on the sample size, desired level of confidence, and cumulative trends in feedback obtained from respondents.
Thus, surveys featuring minimal margins of error are considered substantively accurate while ones plagued by larger margins signal a lack thereof.
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Which graph shows the image of ABC after a rotation about the origin
The graph that shows the image of ABC after a rotation about the origin is the graph d
The graph that shows the image of ABCRotation about the origin is a transformation in which a point or object is rotated around the origin (0, 0) by a certain angle. The origin is the fixed point of the rotation, and all other points move in a circular path around the origin.
To perform a rotation about the origin, you need to know the angle of rotation, the coordinates of the point or object being rotated, and the direction of rotation (clockwise or counterclockwise).
Using the above as a guide, we have the following:
The graph after a rotation about the origin is the graph (d)
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Question 5 of 25
What are the domain and range of y= sin x? Select one choice for domain
and one for range.
A. Domain:
/+nr
B. Range: All real numbers
C. Domain: All real numbers
D. Range: -1≤1
The domain and range of this sine function y = sinx include the following:
C. Domain: All real numbers
D. Range: -1 ≤ y ≤ 1
What is a range?In Mathematics and Geometry, a range can be defined as the set of all real numbers that connects with the elements of a domain.
Furthermore, the horizontal extent of any graph of a function represents all domain values and they are always read and written from smaller to larger numerical values, and from the left-hand side of the graph to the right-hand side.
By critically observing the graph shown in the image attached above, we can reasonably and logically deduce the following domain and range:
Domain = {-∞, ∞}, x|x ∈ R, or all real numbers.
Range = {-1, 1}, y ≥ or -1 ≤ y ≤ 1.
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Please help me with this word problem!
Suppose you lay exactly 160 feet of fencing around a rectangular garden. If the length of the garden is 3 times its width, find the dimensions of the garden.
Length: __ feet
Width: __ feet
Step-by-step explanation:
the perimeter (the way one time around it) of a rectangle is
2×length + 2×width
length = 3×width
2×(3×width) + 2×width = 160
6×width + 2×width = 160
8×width = 160
width = 160/8 = 20 ft
length = 3×width = 3×20 = 60ft
Create a list of steps, in order, that will solve the following equation.
2
- 5 = 123
Solution steps:
Add 2 to both sides
Add 5 to both sides
Divide both sides by 2
Multiply both sides by 2
Subtract 5 from both sides
3
Subtract from both sides
Square both sides
Take the square root of both
sides
The graph of your equation is a parabola with x-intercepts at x = -8.75 and x = 7.25.
How to solvex = -8.75; x = 7.25
2(x + ¾)² - 5 = 123
Add 5 to each side: 2(x+ ¾)² = 128
Divide each side by 2: (x+ ¾)² = 64
Take the square root of each side: x + ¾ = 8 x + ¾ = -8
Subtract ¾ from each side: x = 8 - ¾ x = -8 - ¾
Convert to decimal fraction: x = 8 - 0.75 x = -8 – 0.75
Subtract: x = 7.25 x = -8.75
The graph of your equation is a parabola with x-intercepts at x = -8.75 and x = 7.25.
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The graph of your equation is a parabola with x-intercepts at x = -8.75 and x = 7.25.
How to solvex = -8.75; x = 7.25
2(x + ¾)² - 5 = 123
Add 5 to each side: 2(x+ ¾)² = 128
Divide each side by 2: (x+ ¾)² = 64
Take the square root of each side: x + ¾ = 8 x + ¾ = -8
Subtract ¾ from each side: x = 8 - ¾ x = -8 - ¾
Convert to decimal fraction: x = 8 - 0.75 x = -8 – 0.75
Subtract: x = 7.25 x = -8.75
The graph of your equation is a parabola with x-intercepts at x = -8.75 and x = 7.25.
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I need help completing the table and finding the velocity
We can conjecture that the value of the instantaneous velocity at t=3 is 81.6.
What is the average velocity over an interval?To find the average velocity over an interval, we use the formula:
average velocity = (change in distance)/(change in time)
Using the position function s(t) = -16t^2 + 100t, we can find the change in distance over an interval [a, b] by subtracting the value of s(a) from the value of s(b):
change in distance = s(b) - s(a)
change in distance = [-16(b^2) + 100b] - [-16(a^2) + 100a]
change in distance= -16(b^2 - a^2) + 100(b - a)
Similarly, we can find the change in time over the same interval by subtracting a from b:
change in time = b - a
Using these formulas, we can complete the table as follows:
Time Interval | Average Velocity
[2,3] | 84
[2.9,3] | 82
[2.99,3] | 81.6
[2.999, 3] | 81.6
[2.9999,3] | 81.6
Based on these results, we can make a conjecture about the value of the instantaneous velocity at t = 3.
From the table, the average velocity over smaller and smaller intervals around t=3 is approaching a value of 81.6.
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PLS HELP!!
hassan is finding the quotient of (2+3i) and (-4-i)
In circle S with m \angle RST= 30^{\circ}m∠RST=30
∘
and RS=13RS=13, find the area of sector RST. Round to the nearest hundredth.
The area of a sector of a circle is calculated as approximately 44.24 square units.
How to Find the Area of the Sector of a Circle?The area of the sector of a circle can be calculated by applying the given formula below:
Area of sector = ∅/360 * π * r², where: r is the radius of the circle and ∅ is the central angle or reference angle of the sector.
Given the parameters of the sector of the circle as:
Central angle (∅) = 30 degrees
Radius (r) = RS = 13 units
Plug in the values:
Area of sector = 30/360 * π * 13²
Area of sector ≈ 44.24 square units.
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An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve such that it would produce a mean pressure of 4.4 pounds/square inch. It is believed that the valve performs above the specifications. The valve was tested on 110 engines and the mean pressure was 4.6 pounds/square inch. Assume the standard deviation is known to be 0.8. A level of significance of 0.01 will be used. Determine the decision rule. Enter the decision rule.
The decision rule is Reject the null hypothesis if the calculated z-value is greater than 2.33.
To determine the decision rule, we need to perform a hypothesis test to see if the sample mean of 4.6 pounds/square inch is significantly different from the population mean of 4.4 pounds/square inch.
Null hypothesis: The population mean pressure is equal to 4.4 pounds/square inch.
Alternative hypothesis: The population mean pressure is greater than 4.4 pounds/square inch.
We will use a one-tailed z-test with a level of significance of 0.01. Since the standard deviation is known, we can use the z-test formula:
z = (x - μ) / (σ / √n)
where x is the sample mean, μ is the population mean, σ is the population standard deviation, and n is the sample size.
Plugging in the values, we get:
z = (4.6 - 4.4) / (0.8 / √110) = 2.75
The critical value for a one-tailed test with a level of significance of 0.01 is 2.33 (obtained from a standard normal distribution table). Since our calculated z-value of 2.75 is greater than the critical value of 2.33, we reject the null hypothesis.
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URGENT!! ILL GIVE
BRAINLIEST! AND 100 POINTS
The statements that are true about the scatter plot graph are;
1. The line of best fit should have the same number of points above and below it.
2. There is a moderate positive correlation.
3. The line of best fit will have a positive slope.
What are some facts about scattered plot graphs that you should know?Some facts about scatter plot graphs:
Scatter plots are used to show the correlation or relationship between two variables. The variables are plotted on the x and y-axes, and each point represents a pair of values for the two variables.
Scatter plots can show different types of relationships between two variables, including positive, negative, or no correlation.
The shape of a scatter plot can provide insights into the strength and direction of the relationship between the two variables. For example, if the points on the scatter plot form a linear pattern, this indicates a strong correlation.
Scatter plots can be used to identify outliers or anomalies in the data that do not fit the general pattern of the relationship between the two variables.
The above answer is based on the following options provided in the picture.
Tick all the statements that applies
The y intercept of the line of best fit would be around 45
The line of best fit should have the same number of points above and below it
The slope of the line of best fit could be around -1/20000
The line of best fit must pass through at lest 2 points on the scattered plot
There is no correlation between happiness and income
There is a moderate positive correlation
The line of best fit will have a positive slope
As a person's income goes up, their happiness trends down
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a rectangle has a perimeter of 48 in. the length and width are scaled by a factor of 2.5. what is the perimeter of the resulting rectangle?
If a rectangle has a perimeter of 48 in. the length and width are scaled by a factor of 2.5, the perimeter of the resulting rectangle is 225 inches.
Let L be the length of the original rectangle and W be the width. Then, the perimeter of the original rectangle is P = 2L + 2W = 48 inches.
If we scale the length and width by a factor of 2.5, we get a new length of 2.5L and a new width of 2.5W. The perimeter of the new rectangle would be:
P' = 2(2.5L) + 2(2.5W)
= 5L + 5W
To find the new perimeter, we need to find the new values of L and W. Since the length and width are scaled by the same factor, we can write:
2.5L = kL
2.5W = kW
where k is the scaling factor.
Since the new rectangle is scaled by a factor of 2.5, k = 2.5. Therefore:
L' = 2.5L = 2.5(12) = 30 inches
W' = 2.5W = 2.5(6) = 15 inches
The new perimeter is:
P' = 5L' + 5W'
= 5(30) + 5(15)
= 225 inches
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How many yards are in four and one-half miles?
7,040 yards
7,920 yards
8,448 yards
8,800 yards
Answer:
7,920
Step-by-step explanation:
I took test and got 100%
URGENT!! ILL GIVE
BRAINLIEST! AND 100 POINTS
Answer:
1) 26
2) 118
3) 144
4) 58
5) 38
6) 96
7) 84
8) 156
9) 240
Step-by-step explanation:
Draw a Venn diagram to confirm my answers.
35% of the 240 students were interested in athletics, so .35 × 240 = 84 students were interested in athletics. Since 26 students were interested in both athletics and academic clubs, 84 - 26 = 58 students were interested in athletics only.
3/5 of the 240 students were interested in academic clubs, so 3/5 × 240 = 144 students were interested in academic clubs. Since 26 students were interested in both athletics and academic clubs,
144 - 26 = 118 students were interested in academic clubs only. From this information, you should be able to complete the two-way table.
2
If 3 12, what is the value of x?
O 4
08
O 18
24
Answer:
8
Step-by-step explanation:
12 ÷ 3 = 4
2 x 4 = 8
Hope I could help :)
Identify the triangle as acute, obtuse, or right by comparing the squares of the side lengths. Show your work and
explain the steps you used to solve.
14
21
16
We can see here that the triangle is a right-angle triangle.
What is a triangle?The fundamental geometric shape of a triangle has three straight sides and three angles. It is a triangular polygon with three edges.
We can see here that the triangle is a right-angle triangle because using Pythagoras Theorem, we will see the following:
Hypotenuse = c = 30
Adjacent = b = 24
Opposite = a = 18
c² = a² + b²
Hyp² = Opp² + Adj²
30² = 18² + 24²
324 + 576 = 900.
Thus, it is a right-angle triangle.
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Help me please I don’t know how to solve this.
The equation is 2m + 4s = 16 and the table of values is solved
Given data ,
Let the equation be represented as A
Now , the value of A is
2m + 4s = 16
when m = 0
4s = 16
s = 4
when s = 3
2m + 12 = 16
2m = 4
m = 2
when m = -2
-4 + 4s = 16
4s = 20
s = 5
when s = 0
2m = 16
m = 8
Therefore , the table of values for m = { 0 , 2 , -2 , 8 } and the table of values for s = { 4 , 3 , 5 , 0 }
Hence , the equation is solved
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The following letter cards are put in a bag.
REFLEX
A card is picked at random.
A
B
C
D +
E-
0
Which letter on the probability scale shows the probability of:
a) picking a card with an 'E' on it?
b)
picking a card that does not have an 'E' on it?
1
The probability of picking a card with an 'E' is 2/6 and not picking an E is 4/6
The probability of picking a card with an 'E' on it?From the question, we have the following parameters that can be used in our computation:
REFLEX
In the above, we have
Letters = 6
E = 2
So, we have
P(E) = 2/6
This also means that
P(Not E) = 1 - 2/6
P(Not E) = 4/6
Hence, the letters are
Probability scale shows the probability of picking a card with an 'E' on it = E'Probability scale shows the probability of picking a card with not an 'E' on it = Other lettersRead mroe about probability at
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12 1/2 - 4 7/10 a. 7 6/8 b. 7 8/10 c. 8 2/8 d. 8 3/10
Answer:
c. 8 2/8
Step-by-step explanation:
12 1/2 - 4 7/10 = 12 5/10 - 4 7/10 = 8 2/10 = 8 1/5 = 8.2
Therefore, the answer is option c. 8 2/8
Hope this helps!
If the distance between A (0,4) and B(3,a) is 5 units then Find the value of a.
Step-by-step explanation:
Using the distance formula, we know that the distance between points A and B is:
sqrt((3 - 0)^2 + (a - 4)^2) = 5
Simplifying:
sqrt(9 + (a - 4)^2) = 5
Squaring both sides:
9 + (a - 4)^2 = 25
Simplifying:
(a - 4)^2 = 16
Taking the square root of both sides (note that we can take the positive or negative square root since both will satisfy the equation):
a - 4 = ±4
Solving for a:
a - 4 = 4 or a - 4 = -4
a = 8 or a = 0
However, we need to check that these values of a actually make sense based on the given information. If a = 0, then the distance between A and B is:
sqrt((3 - 0)^2 + (0 - 4)^2) = sqrt(9 + 16) = 5
So a = 0 is a valid solution. If a = 8, then the distance between A and B is:
sqrt((3 - 0)^2 + (8 - 4)^2) = sqrt(9 + 16) = 5
So a = 8 is also a valid solution.
Therefore, the possible values of a are a = 0 or a = 8.
The value of a can be 0 or 8 if the distance between the given points is 5.
A straight line drawn between two points is the shortest distance between the two points. We can calculate the shortest distance by the distance formula.
Let A(0,4) = (x1,y1)
B(3,a) = (x2,y2)
Using distance formula,
[tex]D = \sqrt{(x2-x1)^2 + (y2-y1)^2}[/tex]
As distance = 5 units
Therefore,
[tex]\sqrt{(x2-x1)^2 + (y2-y1)^2} = 5[/tex]
[tex]\sqrt{(3-0)^2 + ((a-4)^2} = 5[/tex]
[tex]\sqrt{(3)^2 + (a^2 + 16 + - 8a)} = 5[/tex]
[tex]\(9 + 16 + a^2 - 8a = 25[/tex]
[tex]25 + a^2 -8a = 25[/tex]
[tex]a^2 - 8a = 0[/tex]
[tex]a(a-8) = 0[/tex]
a = 0 and a = 8
Therefore, the answer is 0 or 8.
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Thabangs transport fee to school increased from 800 to 1150. Determine the percentage increase?
Answer:
percentage increase: 43,75%
Step-by-step explanation:
If we want to solve thai as an equation, we can write:
800 + (x/100) * 800 = 1150
we multiply: 800 + 800x/100 = 1150
we simplify: 800+ 8x = 1150
we bring the unknown to the left, and numbers to the right:
8x = 1150 - 800
8x = 350
we find x by dividing each part by 8
x= 43,75
(note that the x/100 in the first equation is the same thing as writing x%, so 800 plus a percentage of 800 is equal to 1150)