Answer:
The answer is D) 12
There are two trips, but the distances are the same.
Trip #1: uphill, at 9 mph
Trip #2: downhill at 18 mph
Total round trip is 30 minutes.
Since he's going half the speed uphill, Trip #1 takes twice as long as Trip #2.
So if the time for Trip #2 is x, then the time for Trip #1 is 2x.
x + 2x = 30, so x=10
Trip #2 takes 10 minutes.
Trip #1 takes 20 minutes.
Trip #1: 20 minutes at 9 mph = 3 miles
Trip #2: 10 minutes at 18 mph = 3 miles
This means his school is 3 miles away.
If you want an equation to solve,
Let d = distance to school. We use d = r·t formula to set up that t = d/r
let t1 = time going to school and t2 = times going home
t1 + t2 = 30 and t1 = d/9 and t2 = d/18.
d/9 + d/18 = 0.5 (it's 0.5, because we need the time in hours)
mutiply both sides b 18
2d + d = 9
3d = 9
d = 3
pls pls pls help meeee!
Answer:
x is 90 because it is a right triangle
How many faces does a right rectangular prism have if it has 8 vertices and 12 edges?
A. 4 faces
B. 6 faces
C. 8 faces
D. 10 faces
Answer:
B
Step-by-step explanation:
I think
(a-b)^2+2c when a=13,b=6,and c=5
Answer:
59
Step-by-step explanation:
Given: a = 13, b = 6, and c = 5
(13-6)^2+2 x 5 (=10)
(13-6)^2+10
=59
Answer:
59
Step-by-step explanation:
Given,
a = 13
b = 6
c = 5
To find : ( a - b )^2 + 2c
Answer : -
( a - b )^2 + 2c
= ( 13 - 6 )^2 + 2 ( 5 )
= ( 7 )^2 + 10
= 49 + 10
= 59
Therefore,
the value of ( a - b )^2 + 2c is 59.
Please help me !!!!!!
Answer:
2
Step-by-step explanation:
-2+4=2
How do you shift exponential functions?
Answer:
Shift the graph of f(x)=bx f ( x ) = b x left c units if c is positive and right c units if c is negative. Shift the graph of f(x)=bx f ( x ) = b x up d units if d is positive and down d units if d is negative.
Show how 12 is both a multiple of 4 and a factor of 48. Use words, drawings and symbols to explain your answer
Answer:
4x3=12
12x4=48
48/12=4
48/4=12
Step-by-step explanation:
What is the slope of a line that is parallel to the given line
Answer:
-3/2
Step-by-step explanation:
The slope of a line is calculated by finding the rise over run of two points on the line. In this case, I use the points (-3, 4) and (1, -2). Then, I use the formula of [tex]\frac{y_{2} - y_{1}}{x_{2}- x_{1} }[/tex] to find the slope. If 4 is [tex]y_{2}[/tex], -3 is [tex]x_{2}[/tex], 1 is [tex]x_{1}[/tex] and -2 is [tex]y_{1}[/tex], then,
[tex]\frac{4 - (-2)}{ -3- 1 } = \frac{6}{-4} = \frac{3}{-2}[/tex]
Furthermore, the slope of a parallel line is always the same as the given line. Therefore, the answer is -3/2.
this is algebra 1 id appreciate it if you could help me thx!
Answer:
Option 4) y - 1 = -2(x - 0)
Step-by-step explanation:
Given the slope, m = -2, and the y-intercept, (0, 1):
Substitute these values into the following point-slope form:
y - y1 = m(x - x1)
y - 1 = -2(x - 0) ← This is the point-slope form given the slope, m = -2, and the y-intercept, (0, 1).
Therefore, the correct answer is Option 4: y - 1 = -2(x - 0)
A number n decreased by 8 is 19
Answer:
n-8=19
Step-by-step explanation:
PlEaSe HeLp.
i'M VeRy CoNfUsEd.
Answer:
For first page I belive both of the answer are b. The second page I believe b and c
Step-by-step explanation:
Answer:
answers are a,b,a,d
Step-by-step explanation:
C-12=-4show me step by step
Answer:
C = 8
Step-by-step explanation:
Rearrange the equation to make C the subject.
C - 12 = -4
Add 12 to both sides.
C - 12 + 12 = -4 + 12
C = -4 + 12
C = 8
Check it:
C = 8
So substitute the new found value into the original equation:
C - 12 = -4
8 - 12 = -4
-4 = -4
All good.
Answer:
C = 8
Hope this helps!
Step-by-step explanation:
C - 12 = -4
C - 12 + 12 = -4 + 12 ( Add both sides by 12 )
C = 8 ( Simplify )
5 positive integers are arranged in ascending order, as follows:
5, 7, 10, 11, X
The mean and the median are equal.
Find X.
Solve for the value of c.
Step-by-step explanation:
(8c-5)°=(6c-3)°
8c°-5°=6c°-3°
8c°-6c°=-3°-5°
2c°=-8°
c°=-8/2
c°= -4
Substitute the value
{8(-4)-5}
-32-5
-37°
(6c-3)
{6(-4)-3}
-24-3
-27
I don't understand this question can someone help me with this please, please explain!! and thank you for the help!! If u dont know try your best :D
First:
A. (First Option)
Second:
C. (Third option)
(Brainiest and thanks are appreciated)
Answer:
Question 3:
O (7 x 50) - (7 x 2) = 350 – 14 = 336
Question 3:
O (9 x 80) + (9 x 1) 729
Step-by-step explanation:
Distributive Property is used in algebraic expressions, to divide the equation, to make it easier to solve. For question 1, since it was 20, you must subtract 8 from that answer, because 20 is 1 more than 19. For question 2, (2 x 9) + (2 x 3) would be the same thing as 2(9+3).
-kiniwih426
help pls what's the answer if I subtract these ?
[tex] \frac{4}{5} [/tex]
-
[tex] \frac{3}{8} [/tex]
Answer:
[tex] \frac{17}{40} [/tex]
Step-by-step explanation:
[tex] \frac{4}{5} - \frac{3}{8} [/tex]
First, find the common denominator
So we multiply 4 by 8, and get 32
Then we multiply 3 by 5, and get 15
Next we give both terms new denominators 5 × 8 =40
So now our fractions look like this:
[tex] \frac{32}{40} - \frac{15}{40} [/tex]
Now...that our denominators match we can simply
subtract the numerators
32 − 15 = 17
Thus the answer is:
[tex] \frac{17}{40} [/tex]
Hope this helped you- have a good day bro cya)
6/8 of a gallon of orange juice is left. Six thirsty people want an equal amount of orange juice. How much does each person get?
Answer:
they each get 1/8 of a gallon of orange juice
Step-by-step explanation:
These triangles
are congruent by
the triangle
congruence
postulate [? ]
A. SSS
B. SAS
C. Neither, they are not congruent
Answer:
A
Step-by-step explanation:
The markings indicate that all three sides of each triangle correspond with one another meaning that they are congruent by the SSS (Side, Side, Side) postulate.
How do you compare exponential functions??
I really don't understand, also giving brainliest!!
Answer:
You compare it by this
Step-by-step explanation:
Linear functions are graphed as straight lines while exponential functions are curved. Linear functions are typically in the form y = mx + b, which is used to discover the slope, or simply the change in y divided by the change in x, while exponential functions are typically in the form y = (1 + r) x.
The value of 10^4 is 10,000. Use this fact to change 5.2 x 10^4 to standard notation. 5.2 x 10^4 = 5.2 x ____ =?
Step-by-step explanation:
5.2 × 10000
yep that is the answer
Answer:10,000. i think
Step-by-step explanation: Example: 104 = 10 × 10 × 10 × 10 = 10,000.
does anyone know how to do this
Answer:
x = 2 and y =
Step-by-step explanation:
y = 2x - 1
y = -x + 5
2x - 1 = -x + 5
2x + x = 5 + 1
3x = 6
x = 6/3
x = 2
y = 2(3)-1
y = 5
can someone help on number 7 and 8
show work please aswell this is due tmr!
Answer:
In the picture
Step-by-step explanation:
For #8, make sure you combine the like terms on the parantheses due to PEMDAS, then distribute and solve for the variable.
5x(6x2 -3x4+7x3)-20 x3 -3_x4
Answer:
[tex]30x^3-15x^5+35x^4-43[/tex]
Step-by-step explanation:
[tex]30x^3-15x^5+35x^4-43[/tex]
Use the distributive rule and distribute 5x into the brackets. Then use the order of operation rule to do what is after the brackets.
find the surface area of a open box of cardboard whose dimensions are 24cm, 18cm and 14cm
Answer:
hope this helps
Step-by-step explanation:
l = 24 cm
b = 18 cm
h = 14 cm
S.A of cuboid = 2 (l+b) × h
= 2 (42) × 14
= 84 × 14
= 1,176 cm²
20% of a number is 17. Find the number.
Answer:
85
Step-by-step explanation:
20% x X = 17
20/100 x X = 17
X = 17 x 100/20
= 17 x 5
= 85
the number is 85
Answer:
17 is 20% of 85
Step-by-step explanation:
20%= 1/5 so 17 = 1/5 of that number if you multiple 17 by 5 that would equal 85.
17 is 20% of 85
Factor the following Polynomial a) 6x - 18
determine the intercepts of the line 4x-3y=17
Answer:
x-intercept = 17/4 and y = -17/3
Step-by-step explanation:
To find the intercepts: set x = 0 for the y-intercept and solve the equation and set y =0 for the x- intercept and solve the equation.
To
4x - 3y = 17
4(0) - 3y = 17
0 - 3y = 17
y = 17 /-3
y = -17/3 = -5 2/3 y-intercept = -5 2/3.
The ordered pair on the graph is (0, -17/3)
4x - 3(0) = 17
4x - 0 = 17
4x = 17
x = 17/4 x-intercept = 17/4
The ordered pair on the graph is (17/4, 0)
Below is a recipe for chocolate chip cookies. The recipe makes 27 cookies. How many teaspoons of vanilla extract do you need to make 24 cookies? Round to the nearest hundredth if needed.
Answer: 1.78 teaspoons
Step-by-step explanation:
The recipe says: 27 cookies/2 teaspoons Vanilla extract. Let's abbreviation this conversion factor as (27/2)C/V, where C is cookie and V is 1 teaspoon vanilla extract. We have both 13.5C/V and 1V/13.5C as conversion factors. 13.5 cookies is equivalent to 1 teaspoon vanilla, or 1 teaspoon vanilla is equivalent to 13.5 cookies. We can multiply ofr divide either of these factors, since they are both equivalent to 1, and you can mukltiply or divide anything by 1 without changing it's accuracy. The atual numbers will change, but the units will also change, making it a valid result.
We want 24 cookies. Use one of the conversion factors to find the teaspoons vanilla extract required:
1) We can divide by (27C/2V)
24C/((27C/2V) = 1.78 teaspoons
or
2) we can multiply by (1V/13.5C)
24C*(1V/13.5C) = 1.78 teaspoons
Chris
goes to a shop to buy meat, vegetables and fruit.
(a) The costs of the meat, vegetables and fruit are in the ratio
meat : vegetables : fruit = 2:2:3.
The cost of the meat is $2.40.
Calculate the total cost of the meat, vegetables and fruit.
Answer:
meat = $2.40
vegetables = $ 2.40
fruit = $2.40 + X
= 2.40 ÷ 2
= 1.2
therefore 2.40 + 1.2
=$3.6 (For fruits )
= $3.6 + $2.40 + $2.40
= $ 8.4
Hope this helps .Plzz mark me brainliest
The total cost of the meat, vegetables and fruit is $8.4.
What is the ratio?The ratio is defined as the comparison of two quantities of the same units that indicates how much of one quantity is present in the other quantity.
Given that, the costs of the meat, vegetables and fruit are in the ratio meat : vegetables : fruit = 2:2:3.
The cost of the meat is $2.40.
Let the total cost of the meat, vegetables and fruit be x.
Now, 2+2+3=7
So, 2/7 ×x=2.40
2x=2.40×7
2x=16.8
x=8.4
Therefore, the total cost of the meat, vegetables and fruit is $8.4.
To learn more about the ratio visit:
brainly.com/question/13419413.
#SPJ2
If c-d=7 and c=3-8i what is d
a) -4+8i
b)-4-8i
c)4+8i
d)4-8i
Answer:
Step-by-step explanation:
c - d = 7
c = 3 - 8i Substitute into the top equation
3 - 8i - d = 7 Subtract 3 from both sides
- 8i - d = 7 - 3 Combine
-8i - d =4 Add 8i to both sides
-d = 4 + 8i Multiply through by -1
-1*-d = -4 - 8i
d = - 4 - 8i
Looks like B is the answer.
What unit of measurement is used for liquid volume
Answer:
What unit of measurement is used for liquid volume? A Liter