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USPshnik [31]
3 years ago
15

The length of a rectangle is 10m greater than the width. The area is 24m^2

Mathematics
1 answer:
Ivan3 years ago
5 0

Answer:

length: 12m

width: 2m

Step-by-step explanation:

24 = a*w

a = w+10

then:

24 = (w+10)w

24 = w*w + 10*w

24 = w² + 10w

0 = w² + 10 - 24

w = {-10±√((10²)-(4*1*-24))} / (2*1)

w = {-10±√(100+96)} / 2

w = {-10±√196} / 2

w = {-10±14} / 2

only positive numbers:

w = {-10+14}/2

w = 4/2

w = 2m

a = w+10

a = 2 + 10

a = 12m

Check:

24 = 12*2

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Step-by-step explanation:

60% of 80 is 48

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That's about as much as you can simplify this problem.

I hope this helps! :)

7 0
3 years ago
How to solve by elimination
natka813 [3]
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5 0
3 years ago
Help me asap thanks ! :)
pychu [463]

Answer 145°

Step-by-step explanation:

( 5x+5 ) + 40° = 15x - 5

[ Reason : exterior extended angle of a triangle is always equal to the sum of two non adjacent interior angles ]

( 5x+5 ) + 40° = 15x - 5

i.e, x= 10°

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What does 130+12*6÷4=
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Question asked:

What does 130+12*6÷4=

My answer:

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