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3 years ago

Solve using perfect square factoring patterns. y2 + 16y + 64 = 0 {8} {0, –1} {–8} {8, –8}

Mathematics

1 answer:

lubasha [3.4K]3 years ago

7 0

Answer:

y^2 + 16y + 64 = 0

(y + 8)(y+8) = 0

y + 8 = 0

y = -8

y + 8 = 0

y = -8

Step-by-step explanation:

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3 years ago

The area of a rectangle is 72cm2, in which the width is twice the length. what are the dimensions

Blizzard [7]

Answer:

Dimension: 2inches by 4 inches

Step-by-step explanation:

Given

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Required

Determine the dimension.

This is calculated as :

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So:

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$A=2L^2$

Substitute 72 for A

$72=2L^2$

Divide bith sodes by 2

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3 years ago

1) make q the subject of the formula 4(q+p)=5+7q

algol [13]

Answer:

1) $q = \frac{4p}{3} -\frac{5}{3}$

2) $x = \frac{\sqrt{b -y + 2a} }{b}$

Step-by-step explanation:

1) 4(q + p) = 5 + 7q

Multiply 4(q + p):

4q + 4p = 5 + 7q

4p - 5 = 7q - 4q

4p - 5 = 3q

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$\frac{4p}{3} - \frac{5}{3} = q$ or $q = \frac{4p}{3} - \frac{5}{3}$

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3 years ago

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3 years ago

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In step 3, Mark forgot to multiply 5 · 5, so he ended up with 5 in the denominator instead of 5 · 5 = 25

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4 years ago