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4 years ago

6

Solve

ass="latex-formula"> algebraically

1 answer:

Brums [2.3K]4 years ago

7 0

Answer:

x=9 x=-1

Step-by-step explanation:

We can factor

x^2 -8x-9 =0

What 2 numbers multiply to -9 and add to -8

-9*1 = -9

-9 +1 = -8

(x-9) (x+1) =0

Using the zero product property

x-9 =0 x+1 =0

x=9 x=-1

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The perimeter of a square is 28x – 4.

Scorpion4ik [409]

Answer:

B

Step-by-step explanation:

Divide both 28x and -4 by 4 because a square has 4 equal sides. That comes out to 7x-1, therefore answer B is correct.

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3 years ago

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Vesna [10]

Answer:

Step-by-step explanation:

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4 years ago

Read 2 more answers

When 63x3y + 105x2y is divided by -7xy, the quotient is . If this quotient is divided by , the result is 3x + 5.

Karo-lina-s [1.5K]

Answer:

-9x^2 - 15x.

-3x.

Step-by-step explanation:

The first quotient is -9x^2 - 15x.

To find the second result we divide the above by 3x + 5:

-3x

____________

3x + 5) -9x^2 - 15x

-9x^2 - 15x

-----------------

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3 years ago

Read 2 more answers

1. -5|y|=-25 2. 9|y|=27

Mademuasel [1]

What they are in the absolute symbols ( |x| ) the number is always positive
1. |y|= 5
2. |y|= 3

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4 years ago

A binomial probability experiment is conducted with given parameters. Compute the probability of x successes in the n independen

Andrews [41]

Answer:

0.044

Step-by-step explanation:

n=9,p=0.9, x =6.

Apply Binomial probability we get

Sum P(x)=C(n,x) $p^{x} (1-p)^{n-x}$ for x=6

Putting in the formula ,

we get

P(x) = C(9,6) $0.9^{6} 0.1^{3}$

84 X 0.531441 X 0.001

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7 0

4 years ago