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2 years ago

If a car travels 287 miles in 3 hours and 30 minutes what is the average miles per hour that they traveled

1 answer:

6 0

It's simple just divide the total Miles traveled by the total hours;

287 m ÷ 3.5 (it's 3.5 because 30 mins is half of an hour)

$\frac{287 miles}{3.5 hours}$ = 82 miles per hour

So your final answer would be 82 miles per hour :)

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One side of a rectangle is 4 inches longer than the other side. The area of the rectangle is 21 square inches. Find the lengths

hammer [34]

Answer:

l = 7 in; w = 3 in

Step-by-step explanation:

The formula for the area of a rectangle is

A = lw

Data:

A = 21 in²

l = w + 4

Calculation:

21 = (w + 4) × w

21 = w² + 4w

w² + 4w - 21 = 0

(w + 7)(w - 3) = 0

w + 7 = 0 w - 3 = 0

w = -7 w = 3

We reject the negative value, so w = 3 in.

21 = l × 3

l = 7

The rectangle is 7 in long and 3 in wide.

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2 years ago

Isabel bought some books for $6 each and received a discount of $8 off of her total purchase. She spent $58 after the discount.

Art [367]

Answer:

Step-by-step explanation:

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2 years ago

If p represents a number, which expression represents "p divided by 7, increased by 8"?

il63 [147K]

Answer: p/7 + 8

Step-by-step explanation:

8 0

2 years ago

The unit digit of cube 149 is

ICE Princess25 [194]

The unit digit of cube 149 is 9

4 0

2 years ago

Read 2 more answers

during a bike challenge, riders have to collect various colored ribbons. each 1/2 mile they collect a red ribbon, each 1/8 mile

Natali [406]

The correct answer is: 
green and blue.

Explanation: 
We want to see which fractions $\frac{3}{4}$ is a multiple of. We know that $\frac{3}{4}$ is a multiple of $\frac{1}{4}$ , because $\frac{1}{4}$ *3= $\frac{3}{4}$ .

We can divide fractions to determine if $\frac{3}{4}$ is a multiple of $\frac{1}{2}$ :
$\frac{ \frac{3}{4}}{ \frac{1}{2}}$ ;

in order to divide fractions, flip the second one and multiply:
$\frac{3}{4}$ )* $\frac{2}{1}$ = $\frac{6}{4}$ =1 $\frac{1}{2}$ .
This did not divide evenly, so $\frac{3}{4}$ is not a multiple of 1/2.

Checking to see if $\frac{3}{4}$ is a multiple of $\frac{1}{8}$ , $\frac{ \frac{3}{4}}{ \frac{1}{8}}$ ;

flip the second one and multiply:
$\frac{3}{4}$ * $\frac{8}{1}$ = $\frac{24}{4}$ =6.
This divided evenly, so $\frac{3}{4}$ is a multiple of $\frac{1}{8}$ .

6 0

3 years ago

Read 2 more answers