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Montano1993 [528]
3 years ago
13

A car drives 120 miles in 3 hours. Calculate the average speed, in mph, of the car.

Mathematics
1 answer:
4vir4ik [10]3 years ago
7 0

Answer:

40 mph per hour

Step-by-step explanation:

120/3=40

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23 in. The perimeter of this quadrilateral is 100 in. What is the length of the side not given? 27 In. 32 in.​
-Dominant- [34]

Answer:

Solution:

The formula to find the perimeter of the quadrilateral = sum of the length of all the four sides.

Here the lengths of all the four sides are 5 cm, 7 cm, 9 cm and 11 cm.

Therefore, perimeter of quadrilateral = 5 cm + 7 cm + 9 cm + 11 cm

                                                     = 32 cm

3 0
2 years ago
Dilate the figure by the scale factor. Then enter
Rzqust [24]

Answer:

there you go but im not sure . hope its helpful and good luck ;)

7 0
3 years ago
The graph of a proportional relationship contains the point (-30, 18)
Elena L [17]

Answer:

k=-\frac{3}{5}

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form k=\frac{y}{x} or y=kx

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

we have the point (-30,18)

so

x=-30, y=18

Find the value of k

k=\frac{y}{x}

substitute

k=\frac{18}{-30}

Simplify

Divide by 6 both numerator and denominator

k=-\frac{3}{5}

4 0
3 years ago
The width of a rectangle is 7 inches less than its length. The area of the rectangle is 120 square inches. Solve for the dimensi
lukranit [14]
A) w + 7 = L
B) w * L = 120
A) w = L -7 then substituting this into B)
(L-7) * L = 120
L² -7L = 120
L² -7L -120 = 0
Solving by quadratic Formula:
L1 = 15 
L2 = -8

If length = 15, then width = 8




4 0
3 years ago
Read 2 more answers
I need help Please , these tree make me bored , can you help me please . <br> Thank you so much
IgorLugansk [536]
1) question 18 of 20
-7x/5-(4y)=7
4y=-7x/5-(7)
y=-7x/20-(7/4).

if x=0  ⇒y=-7*0/20-7/4=-7/4  ⇒y-intercept is-7/4
fi y=0  ⇒  -7x/20-(7/4)=0
-7x/20=7/4
x=(7*20) / [4*-(7)]=-5         ⇒x-intercept is -5

Solution: D) x-intercept is -5 ; y-intercept is -7/4

 Question 19 of 20
P₁=(x₁,y₁)
P₂=(x₂,y₂)
m=slope

m=(y₂-y₁) / (x₂-x₁)

Then:
A(1,7)
B(10,1)

m=(1-7) / (10-1)=-6/9=-2/3.

Solution: B)-2/3

Question 20 of 20:
y-y₀=m.(x-x₀)
A(4,3)
B(-4,-2)

m=(-2-3) / (-4-4)=-5/-8=5/8

y-3=(5/8).(x-4)
y=5x/8-(20/8)+3
y=5x/8-(20/8)+24/8
y=5x/8+(4/8)
y=5x/8+1/2

solution: B) y=5x/8+1/2

5 0
3 years ago
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