2 years ago

Please help. A rectangle's length and width are in a ratio of 7:3. The area is 84 square feet. What are the

Mathematics

1 answer:

GalinKa [24]2 years ago

8 0

Answer:

length = 14 feet

width = 6 feet

Step-by-step explanation:

A = 84 feet square

ratio of length and width = 7 : 3

total ratio of length and width 10 = a

length = (7/10)a

width = (3/10)a

A = length x width = (7/10)a x (3/10)a = (21/100)a² = 84

a² = 84 x 100 : 21 = 400

a = 20 feet

length = 7/10 x 20 = 14 feet

width = 3/10 x 20 = 6 feet

You might be interested in

The range of the function f(x) = x + 5 is {7, 9). What is the function's domain?

Maru [420]

Answer:

(2,4)

Step-by-step explanation:

The range is the y values

y = x+5

Let y=7

7 =x+5

Subtract 5

7-5 x+5-5

2=x

Let y= 9

Subtract 5

9-5 x+5-5

4=x

The domain is (2,4)

8 0

3 years ago

This is a not graded question <br> Help!

kogti [31]

The answer is B lm 100% sure

7 0

2 years ago

Someone help what the area of Demi's poster

Airida [17]

the center square is 20 x 20 = 400

there are 4 12 x 20 areas

12*20 = 240*4 = 960

960+400 = 1360 square inches

3 0

3 years ago

49 percent of all people who buy running shoes don't run at all Assuming 340,000 people but running shoes how many will use them

Goryan [66]

173, 400

49% of people do not run; thus, 51 percent of people do.

51% * 340,000 = 173, 400

8 0

3 years ago

Read 2 more answers

Is the following relation a function?

yuradex [85]

Answer:

Since there is a curve, I believe it is a function.

8 0

2 years ago