All categories

2 years ago

A car travels at a speed of 25 miles per hour for t hours

Mathematics

1 answer:

Pepsi [2]2 years ago

4 0

Answer: 25t+45m

Step-by-step explanation:

Really simple because if they traveled 25mi/h for t hours, that makes it 25t miles. They traveled 45mi/h for m hours so it's 45m. If you add them together, 25t+45m.

If this helped, brainliest please.

You might be interested in

What is 5 7/8 as an improper fraction?

Virty [35]

Answer:

47/8

Step-by-step explanation:

8×5=40

40+7=47/8

ans47/8

pliz mark my answer brainliest

good luck

6 0

3 years ago

Read 2 more answers

Find the dimensions of the rectangular corral producing the greatest enclosed area given 320 feet of fencing. (Assume that the l

jenyasd209 [6]

Answer:

The dimensions of the rectangular corral producing the greatest enclosed area is a square of 80 ft x 80 ft

Step-by-step explanation:

Let

x -----> the length of the rectangular corral in feet

y -----> the width of the rectangular corral in feet

we know that

The area of the rectangular corral is equal to

$A=xy$ -----> equation A

The perimeter of the rectangular corral is equal to

$P=2(x+y)$

$P=320\ ft$

$320=2(x+y)$

Simplify

$160=(x+y)$

$y=160-x$ -----> equation B

substitute equation B in equation A

$A=x(160-x)$

$A=-x^2+160x$

This is a vertical parabola open downward

The vertex is a maximum

The x-coordinate of the vertex represent the length for the maximum area

The y-coordinate of the vertex represent the maximum area

Convert the quadratic equation in vertex form

$A=-x^2+160x$

Factor -1

$A=-(x^2-160x)$

Complete the square

$A=-(x^2-160x+80^2)+80^2$

$A=-(x^2-160x+80^2)+6,400$

Rewrite as perfect squares

$A=-(x-80)^2+6,400$

The vertex is the point (80,6,400)

$x=80\ ft$

The maximum area is 6,400 ft^2

<em>Find the value of y</em>

$y=160-x$ ----> $y=160-80=80\ ft$

therefore

The dimensions of the rectangular corral producing the greatest enclosed area is a square of 80 ft x 80 ft

4 0

2 years ago

Ben needs to replace two sides of his fence. One side is 367 9/100 meters long, and the other is 329 3/10 meters long. How much

Flura [38]

Answer:

$696\frac{39}{100}$ meters fence

Step-by-step explanation:

Ben needs to replace two sides of his fence.

The length of one side of fence = $367\frac{9}{100}$ meters

The length of other side of fence = $329\frac{3}{10}$ meters

to calculate the length of fence that Ben need to buy we will add the length of both sides.

$367\frac{9}{100}$ + $329\frac{3}{10}$

= $\frac{36709}{100}$ + $\frac{3293}{10}$

= $\frac{36709+32930}{100}$

= $\frac{69639}{100}$

= $696\frac{39}{100}$ meters

Ben need to buy $696\frac{39}{100}$ meters fence.

6 0

3 years ago

Which type of factoring is used to factor the following expression:<br> 2x^2 + 7x- 30

svetlana [45]

Answer:

(2x - 5) • (x + 6)

7 0

3 years ago

What is the main idea of this passage from the

ella [17]

Answer: B. The United States might not have been able to stop the attacks, but it could have made a better effort to do so.

Step-by-step explanation:

6 0

2 years ago