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KIM [24]
3 years ago
11

I Need help on my sis homework pls

Mathematics
1 answer:
lozanna [386]3 years ago
3 0

Answer:

B

Step-by-step explanation:

49 ÷ 7 = 7

0.49 ÷ 0.7 = 7

0.049 ÷ 0.07 = 7

(sorry it's not very thorough, hope it helps)

edit: omg I put 3 instead of 7. oops

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The area of a room is 600 square feet. The length is (x+2) feet and the width is (x+3) feet. Find the dimensions of the room
m_a_m_a [10]
Create an equation using the formula for area of a rectangle; area = width * length
(X + 2)(x + 3) = 600
Multiply the dimensions.
X^2 + 3x + 2x +6 = 600, or simplified x^2 +5x + 6 = 600.
Subtract 600 to get the following:
X^2 + 5x - 594 = 0
Factor by x:
(X - 22)(x + 27) = 0
Solve for x
X - 22 = 0
X = 22.
Use the POSITIVE VALUE of x as you can’t have a negative area for a room.
Then substitute 22 for x to get the dimensions
(22+ 2) or 24 for length and (22+3) or 25 for width.
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