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4 years ago

Factor this expression completely. Write the factored expression in the space provided.

Mathematics

1 answer:

Brilliant_brown [7]4 years ago

8 0

Answer:

(x + 2) (x + 7)

Step-by-step explanation:

x^2 + 9x + 14

x^2 + 7x + 2x + 14

x( x + 7) + 2(x + 7)

(x + 2) (x + 7)

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Use the substitution method to solve the system of equations

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Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

A direct variation exist between x and y. When x=4, y=3. What is the value of y when x=10

scoray [572]

Answer:

$y = 7.5$

Step-by-step explanation:

Given

Direct variation implies that:

$y = kx$

Where k is the constant of variation.

$x=4; y=3$

Required

Find y when $x = 10$

$y = kx$

Make k the subject

$k = \frac{y}{x}$

For: $x=4; y=3$

$k = \frac{3}{4}$

For: $x = 10$

$k = \frac{y}{x}$ becomes

$k = \frac{y}{10}$

Substitute $k = \frac{3}{4}$

$\frac{3}{4} = \frac{y}{10}$

Make y the subject

$y = \frac{3}{4} * 10$

$y = \frac{3* 10}{4}$

$y = \frac{30}{4}$

$y = 7.5$

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3 years ago

Please help!!!! ASAP!!! Thank you!!!

MissTica

Answer:

Step-by-step explanation:

There were 7 chairs in each row, now they add three more to each row so now there's 10 chairs per row. There were 56 chairs altogether previously but now they need 5 times more so 56 times 5 equals 280. so with ten chairs per row and 280 chairs in total: 280/10 = 28. You'll need 28 rows

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago