MATHEMATICS MIDDLE SCHOOL

Gabriella wants to tile a room with an area of 320 square feet. The width of the room is 4/5 its length. What are the length and width of the room?

Answers

Answer 1

Answer: lenght - a
width - b
Area= a*b
320=ab
b=4/5a
320= $4a^(2)/5$
400= $a^(2)$
a= $√(400)$
a=20
b=16

Answer 2

Answer:

Answer:

Read below.

Step-by-step explanation:

A=l*w

320=l*(4/5)l

320=(4/5)(l2)

(5/4)(320)=(5/4)(4/5)(l2)

5(80)=l2 (320/4=80)

400=l2

√400=√l2

20=l

w=(4/5)(20)

w=4*4 (20/5=4)

w=16

length=20 feet

width=16 feet

If you don't understand square roots, maybe you understand prime factorization.

320=2*2*2*2*2*2*5=(2*2*2*2)*(2*2*5)=16*20 and 16 is 4/5 of 20

If you don't understand prime factorization you can use trial and error.

2*160

4*80

5*64

8*40

10*32

16*20 answer, because 16 is 4/5 or 0.8 times 20

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Answers

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Answers

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A recipe calls for 2 cups of flour of flour to make 3 dozen cookies. Is 3 cups of flour enough to make 60 cookies?

Answers

Answer:

no it is not

Step-by-step explanation:

it would be 54

Answer:

Step-by-step explanation:

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Answers

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