Ask question

Ask question

All categories

3 years ago

15

A small painting has an area of 400 cm^2. The length is 4 more than twice the width. Find the dimensions of the pool. Solve by c

ompleting the square. Round answers to the nearest tenth.

1 answer:

anygoal [31]3 years ago

6 0

A = l*w
l = 2w + 4
400 = (2w + 4)*w
0 = 2w^2 + 4w - 400

Then use the quadratic equation where a=2, b=4, and c=-400.

w = <span>13.2
l = 30.4
</span>

You might be interested in

the perimeter of the rectangle is 86 inches. if the length is 3 inches longer that the width, find the width of a rectangle.

yawa3891 [41]

The length is 23in and the width is 20 inches

8 0

2 years ago

Read 2 more answers

Which expression is the factored equivalent of x2 - 5x + 4?

ozzi

Answer:

Step-by-step explanation:

A

5 0

3 years ago

David & Brad are competing in a 20-mile bicycle race. David rides 6.2 miles in 1/4 hour. Brad rides 11.9 miles in 1/2 hour.

Elodia [21]

David will finish first, because if you divide Brad's miles by 2 to his miles in a 1/4 of an hour are 5.95 miles. This means David went 6.2 miles in the same time that Brad went 5.95. Therefore, David will finish first.

6 0

3 years ago

What does 2 1/4 - 1 2/3?

Degger [83]

Answer:

eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

7 0

2 years ago

Read 2 more answers

Evaluate 5x-2w+t <br><br> Help needed!!

likoan [24]

the answer is the same

5 0

2 years ago