The distance between rhea and her friend's house could be 8 km and The distance of the library from the rocks house could be 15 km.
What is Pythagoras' Theorem?If ABC is a triangle with AC as the hypotenuse and angle B with 90 degrees then we have:
|AC|^2 = |AB|^2 + |BC|^2
where |AB| = length of line segment AB. (AB and BC are rest of the two sides of that triangle ABC, AC being the hypotenuse).
rhea got a new e-scooter. She wanted to show it to her friend on the way to the library.
Her friend Ronan's house is due north of her house.
After showing him the new scooter she went to the library which is due west from rocks house.
while returning back she drove 17km diagonally to her house.
By Pythagoras' theorem
|AC|^2 = |AB|^2 + |BC|^2
Here we can assume that
AB = The distance between rhea and her friend's house.
BC = The distance of the library from rocks house.
The triplet of the 17 would be (8, 15, 17)
So, we can say that the AB could be 8 km and BC could be 15 km or vice versa.
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What is the period of f(x) = sin (8x)?
X/8
X/4
4
8
Answer: B- x/4
Step-by-step explanation:
The period is the horizontal distance needed for the values to repeat themselves.
Can you guys help me with this math questions
Answer:
2) $40 per shirt
3) 80/9 m = 8.9 m (nearest tenth)
Step-by-step explanation:
The first question has been answered here: https://brainly.com/question/27846862
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Question 2
Given information:
Previous sales = 300 shirts at $20 eachFor every $1 increase in price, the number of sales diminishes by 5Let [tex]x[/tex] = number of $1 increases
Let [tex]y[/tex] = total revenue (in dollars)
From the given information:
Price change of shirt: [tex](20 + x)[/tex]Number of sales change: [tex](300 - 5x)[/tex]Therefore, we can create a quadratic equation with the given information:
[tex]\implies y = (20+x)(300-5x)[/tex]
As we need to find the maximum amount of revenue, we need to find the vertex of [tex]y[/tex]. As the equation is already factored, the quickest way to do this is to the find the mid-point of the zeros (since a quadratic curve is symmetrical).
[tex]\begin{aligned}y & =0\\\implies (20+x)(300-5x) & =0\\\implies (20+x) & =0 \implies x=-20\\\implies (300-5x) & = 0 \implies x=60\end{aligned}[/tex]
[tex]\textsf{Midpoint}=\dfrac{-20+60}{2}=20[/tex]
Therefore, Sammy should have 20 $1 increases to maximize the revenue, so the new price will be:
[tex]\implies \$20 + 20 \times \$1 = \$40\: \sf per\:shirt[/tex]
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Question 3
Given information:
Bridge is modeled as a parabolaWidth of bridge = 30 mMax height of bridge = 10 m high (in the middle)As the bridge is modeled as a parabola, and we have been given the width and height, we can create a quadratic equation using the vertex form.
Vertex form: [tex]y=a(x-h)^2+k[/tex]
where:
x is the horizontal distance of the bridgey is the height of the bridge(h, k) is the vertexa is some constantMiddle of the bridge = 30 m ÷ 2 = 15 m
Max height of the bridge = 10 m
Therefore, the vertex of the parabola is (15, 10)
[tex]\implies y=a(x-15)^2+10[/tex]
We know that when [tex]x = 0, y = 0[/tex]. Therefore, substitute these values into the equation and solve for a:
[tex]\implies 0=a(0-15)^2+10[/tex]
[tex]\implies 0=225a+10[/tex]
[tex]\implies 225a=-10[/tex]
[tex]\implies a=-\dfrac{10}{225}[/tex]
[tex]\implies a=-\dfrac{2}{45}[/tex]
Therefore, the equation of the parabola is:
[tex]\implies y=-\dfrac{2}{45}(x-15)^2+10 \quad \quad \textsf{for }0\leq x\leq 30[/tex]
The horizontal distance at 5 m right of the middle is:
[tex]\implies \dfrac{30}{2}+5=20\:\sf m[/tex]
Therefore, to find the height at this point, input [tex]x=20[/tex] into the equation and solve for y:
[tex]\implies -\dfrac{2}{45}(20-15)^2+10=\dfrac{80}{9}\:\sf m[/tex]
Therefore, the height of the bridge at 5 m to the right of the middle is:
[tex]\dfrac{80}{9}\:=8.9\: \sf m\:(nearest\:tenth)[/tex]
5.) The price of gas last year was $1.75 per gallon. The price went up by 5%,
what is the new price for a gallon of gas?
Answer: 1.75•5%=0.0875
1.75+0.0875=$1.84
I’m pretty sure this is correct
Answer:
5% of 1.75 is 0.085.
So 1.75 + 0.085 is 1.8375.
A job applicant estimates that his chance of passing a qualifying examination is , and his chance of being appointed if he does pass is . what is the probability that he will receive the job?
The probability that he will receive the job will be 1 / 6
The complete question is given below:-
A job applicant estimates that his chance of passing a qualifying examination is 2/3, and his chance of being appointed if he does pass is 1/4. What is the probability that he will receive the job?
What is probability?
Probability is defined as the ratio of the number of favourable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.
It is given that:
The chance of passing a qualifying examination is 2/3=P
and chance of being appointed, if he does pass, is 1/4=P'
Now, we are asked to find the probability that he will receive the job.
We are asked to find the probability that he will receive the job.
The probability is calculated as The probability that he qualify the exam×Probability that he is being appointed.
=P×P'
=(2/3)×(1/4)
=1/6
Therefore the probability that he will receive the job will be 1 / 6
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Calcula el valor de la expresion
m + (m – 3), si m = –5
Answer: -13
Step-by-step explanation:
m = -5
-5 + (-5-3)
-5 -8
-13
Answer:
-13
Step-by-step explanation:
dado m= -5
m+(m-3) = -5+(-5-3) = -5 + (-8) = -5-8 = -13
Help me please given ABcd is a parallelogram
Determine, which is the shorter path from A to B is: Around the two small semi circles or around the large semi-circle? Verify your answer by calculating the length of the path in each case.
use the information given to answer the question. write your answer as a decimal rounded to the nearest tenth
Answer: The value of x is 3.5
Explanation:
Equation:
y = 2x - 7
When the equation's Line intersects the x-axis, the value of y shall be always 0
Insert y = 0, to find x intercept
⇒ 0 = 2x - 7
⇒ 2x - 7 = 0
⇒ 2x = 7
⇒ x = 3.5
So coordinates: (x, y) → (3.5, 0)
Which triangles are similar please help lol
Answer:
triangles A and B are similar
Step-by-step explanation:
X-7/20=5/16 solve for x
x = 53/80 = 0.6625
if isn't right I have another equation
Answer:
13.25
Step-by-step explanation:
[tex]x - 7 \div 20 = 5 \div 16[/tex]
by cross multiplying
16(x-7)=5(20)
16x-112=100
16x=100+112
16x=212
x=212 /16
×=13.25
if the question is this
Which table represents a linear function?
John is buying a new car. The value of one car he is considering is $20,000. The value of the car as it ages can be modeled by the
function v= 20,000(0.84), where t is the number of years from the time of purchase. One of the factors John is using to make his decision is
the value of the car over time until it reaches half its original value. What values of domain are reasonable for the given function in this
context?
The reasonable domain of the function is [0,4)
How to determine the domain?The function of the car value is given as:
V(x) = 20000 * (0.84)^x
When the car reaches half its value, we have:
V(x) = 10000
Substitute V(x) = 10000 in V(x) = 20000 * (0.84)^x
10000 = 20000 * (0.84)^x
Divide both sides by 20000
0.84^x = 0.5
Take the logarithm of both sides
x log(0.84) = log(0.5)
Divide both sides by log(0.84)
x = 4
This means that the maximum value of x is 4
Hence, the reasonable domain of the function is [0,4)
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The measure of an angle is 44.8°. What is the measure of its supplementary angle?
Answer:
Step-by-step explanation:
It is the middle of the heatwave, and you AC unit has broken. You have 2 companies that come highly qualified. Company A charges $200 to come out plus $50 per hour to look at your AC and determine what is wrong. Company B charges $125 plus $75 an hour for the same exact service.
After how many hours (x) will both companies charge you the same amount(y)?
By solving a linear equation, we will see that after 3 hours, both companies will charge the same amount.
After how many hours will both companies charge you the same amount?
We know that company A charges $200 plus $50 per hour. So if they work for x hours, they charge:
A(x) = $200 + $50*x
And company B charges $125 plus $75 per hour, so if they work for x hours, they charge:
B(x) = $125 + $75*x
We want to find the value of x such that A(x) = B(x), then we want to solve the linear equation:
$200 + $50*x = $125 + $75*x
$200 - $125 = $75*x - $50*x
$75 = $25*x
$75/$25 = x = 3
This means that after 3 hours, both companies will charge the same amount.
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how to simplify 8x-6x
subtracting 6x from 8x. It's quite simple to deal with small two-part numbers like these. After subtracting 6x from 8x, you will get the answer 2x.
Quick Answer:
You simply 8x-6x by subtracting 6x from 8x, and then you will get the answer 2x
HAVE A NICE DAY
pls pls pls pls pls help me assap.
The quadrilaterals and their corresponding properties as shown in the given table are explained below.
How to Identify properties of Quadrilaterals?Property 1; All sides are Congruent means all sides are equal and only Square and Rhombus have this property.
Property 2; All angles are congruent means all angles are equal. Only Rectangle and Square have this property.
Property 3; Diagonals are perpendicular to each other. Only Square and rhombus have this property.
Property 4; Diagonals are congruent. This means the diagonals are equal and only Square and Rectangle have this property.
Property 5; Exactly One pair of parallel sides is given by Only Trapezoid.
Property 6; Two pairs of opposite sides are congruent. Only Parallelogram, Rectangle, Rhombus and Square have this property.
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A circle is divided into 9 equal parts what is the angle measure of one of those parts?
Answer: 40°
40 * 9 =360° Each part has 40° angle
Consider the given quadratic equations. Equations function it defines. Equation A y= 3x² - 6x + 21 Equation B y=3x² - 6x + 18 Equation C y= 3(x-1)2 +18 Equation Dy=3(x-1)² +21 Complete the following statement. equation. are equivalent , and of those, equation. is in the form most useful for identifying the extreme value of the function it define
Equation A and equation C are equivalent , and of those, equation C is in the form most useful for identifying the extreme value of the function it defines.
Evaluation of the quadratic expressions
The quadratic expressions can be simplified as follows;
Equation A: y = 3x² - 6x + 21Equation C: y = 3(x - 1)² + 18Equation C is simplified as follows;
y = 3(x - 1)² + 18
y = 3(x² - 2x + 1) + 18
y = 3x² - 6x + 3 + 18
y = 3x² - 6x + 21
Thus, equation A and equation C are equivalent , and of those, equation C is in the form most useful for identifying the extreme value of the function it defines.
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i NEED HELP ASAP
A(n) sampling method is one that is representative of the population, selected at random, and large enough to provide accurate data.
A sample is one that is representative of the population, selected at random, and large enough to provide accurate data.
What is a sample?A sample is a smaller group that is representative of the population. A sample is sometimes necessary because it might not be feasible or cost effective to access the whole population.
For example, if a researcher is studying the impact of inflation on US families. It is not feasible to reach the whole of the families in the US. So, the researcher would use a representative group of US families. This is known as a sample.
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Describe how to determine the average rate of change between x = 3 and x = 5 for the function f(x) = 3x3 + 2. include the average rate of change in your answer.
Answer:
147
Step-by-step explanation:
[tex]\displaystyle \frac{f(b)-f(a)}{b-a}\\ \\\frac{f(5)-f(3)}{5-3}\\ \\\frac{(3(5)^3+2)-(3(3)^3+2)}{2}\\ \\\frac{(3(125)+2)-(3(27)+2)}{2}\\ \\\frac{(375+2)-(81+2)}{2}\\ \\\frac{377-83}{2}\\ \\\frac{294}{2}\\ \\147[/tex]
Recall that if a function [tex]f[/tex] is continuous over the interval [tex][a,b][/tex], then its average rate of change is [tex]\frac{f(b)-f(a)}{b-a}[/tex].
Help plsss i dont get it
Part A
The pattern of squares is 1, 4, 9, ... which is the set of perfect squares
1 = 1^24 = 2^29 = 3^2and so on
The 7th figure will have 49 squares because 7^2 = 49
Answer: 49==============================================================
Part B
Each pattern has one circle per corner (4 circles so far). In addition, there's one circle per unit side to form the perimeter.
Pattern 1 has 4+4(1) = 8 circlesPattern 2 has 4+4(2) = 12 circlesPattern 3 has 4+4(3) = 16 circlesThe nth term will have 4+4n circles. The first '4' is the number of circles at the corners. The 4n is the circles along the perimeter. If you wanted, 4+4n factors to 4(1+n).
Plug in n = 20 to find the 20th figure has 4+4n = 4+4(20) = 84 circles
Answer: 84==============================================================
Part C
Pattern 1 has 1 square + 8 circles = 9 items totalPattern 2 has 4 squares + 12 circles = 16 items totalPattern 3 has 9 squares + 16 circles = 25 items totalThis seems to suggest if the pattern number is odd, then we need an odd number of tiles (square + circular).
Let n be the pattern number. Pattern n needs n^2 square tiles and 4+4n = 4n+4 circular tiles. Overall, n^2+4n+4 tiles are needed.
It turns out that if n is odd, then n^2+4n+4 is always odd. The proof is shown below.
Side note: n^2+4n+4 factors to (n+2)^2
Answer: B) will always be oddA certain television is advertised as a 95-inch tv (the diagonal length). if the width of the tv is 77 inches, how tall is the tv? round to the nearest tenth of an inch.
The height of the television given the length of its diagonal and its width is 55.6 inches
What the height of the tv?The height of the television can be determined using Pythagoras Theorem.
The Pythagoras theorem: a² + b² = c²
where a = length
b = base
c = hypotenuse
√95² - 77² = 55.6 inches
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Answer: 55.6
Step-by-step explanation: 55.6 that's what I put in and got it right
MATHH!!! find the surface area of the prism. pleaseee answer correctly and tell me how you got your answer.
Answer:232 inch^2
Step-by-step explanation:to solve, add the surface area of each side. Remember, there are 3 pairs of sides and the pairs have equal area. Area =length x length. So we have 2x(8x2)+2x(2x10)+2x(10x8) in square inches.
After 3 hours,
Amelie has biked
15 miles
A professional
cyclist finished a
100-mile race in 4
hours
it took Emma
3 hours to bike 27
miles up to the top
of Mt. Evans
← PREVIOUS
?
?
?
3 of 12
acer
20 miles/hour
5 miles/hour
25 miles/hour
NEXT->>
ES
X
a
12:19
i need help grades are do today sorry for the trouble
Answer:
13
Step-by-step explanation:
[tex]Sin = \frac{opp}{hyp} \\cos= \frac{adj}{hyp} \\tan = \frac{opp}{adj}[/tex]
=> get the length of the diag on bottom
[tex]tan x = \frac{3}{4} x = 36.87[/tex] degree
[tex]sin(36.87)=\frac{3}{y}[/tex]
y is about 5
=> calculate max length of stick
[tex]tan\left(x\right)\:=\frac{5}{12}, x= 22.62degree[/tex]
[tex]sin\left(22.62\right)\:=\:\frac{5}{x}[/tex]
which is 13
One number is 4 times another. Their difference is 27. How to get the other two numbers?
Answer:
x = 36; y = 9
Step-by-step explanation:
To solve this problem you need to set up two equations. The first equation comes from the first sentence "One number is 4 times another." This equation can be written as x = 4*y where x and y are the two numbers. The second equation comes from the second sentence "Their difference is 27." This equation can be written as x-y = 27. To find the numbers you need to rearrange one equation and plug it into the other.
Step 1: write equations
x = 4*y
x-y = 27
Step 2: rearrange
Not necessary here
Step 3: substitute in
x - y = 27
4y -y = 27
3y = 27
y = 9
Step 4: solve for x
x = 4*y
x = 4*9
x = 36
[tex]x[/tex] - one number
[tex]4x[/tex] - the other number
[tex]4x-x=27\\3x=27\\x=9\\\\4x=4\cdot9=36[/tex]
These numbers are 9 and 36.
A circle has an area of 144pie square feet what is the diameter of the circle
Answer:
13
Step-by-step explanation:
144 = pie radio square
144 divided by pie = 45.83662361
45.83662361 square root = 6.770275003
6.770275003 multiply by 2 = 13.54055001
13.54055001 = diameter
Peppers are sold in packs of 3 for $111,or in individual for $29 which is the best value
Aurelio is purchasing carpet tiles to cover an area of
his living room floor that is 8 feet wide by 10 feet
long. each carpet tile is a square 20 inches wide by
20 inches long. what is the minimum number of carpet
tiles that aurelio must purchase to cover this area of
his living room floor?
a. 5
b. 11
c. 21
d. 30
e. 84
Answer:d.33
Step-by-step explanation: To begin we convert his living room floor length and width to inches. 8 1 slash 3 feet = 100 inches
10feet= 120 inches
hence the area in square inches of the living room floor is 100 inches times120 inches = 12000 inches squared.
Each carpet tile has an area of 20 by 20 which = 400inches squared. dividing the area of the living room by 400inches of each carpet tile, would yield 30 carpet tiles needed to cover this area.
As per linear equation, the minimum number of carpet tiles that Aurelio must purchase to cover the area of his living room floor is 29.
What is a linear equation?A linear equation is an equation that has one or multiple variables with the highest power of the variable is 1.
Given, the room has a length of 10 feet = 12 × 10 inches = 120 inches
The width of the room is = 8 feet = 12 × 8 inches = 96 inches
Therefore, the area of the room is
= 120 × 96 square inches
= 11520 square inches
Length of each carpet tile is 20 inches
Width of each carpet tile is 20 inches
Therefore, the area of each tile is
= (20)² square inches
= 400 square inches
The number of tiles require
= (11520/400)
= 28.8
≈ 29
Therefore, 29 tiles will be required.
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3x+5y = 15 find the slope of a line perpendicular to each given line
Answer:
Slope = 5/3
Step-by-step explanation:
See attached image