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3 years ago

The product of a + 3 and –2a2 + 15a + 6 is –2a3 + xa2 + 51a + 18. What is the value of x?

1 answer:

8 0

Value of x is 9 As when we multiply a + 3 by -2a2 + 15a + 6 We get (a + 3) (-2a2 + 15a + 6) -2a3 + 15a2 + 6a - 6a2 + 45a + 18 -2a3 + 9a2 + 51a + 18 If we compare the coefficients of a2, we get x = 9

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Which equations are true for x = –2 and x = 2? Select two options

Rudik [331]

The equations that are true for x = -2 and x = 2 are (a) x^2 - 4 = 0 and (d) 4x^2 = 16

<h3>How to determine the true equations?</h3>

We have:

x = -2 and x = 2

Rewrite as:

x + 2 = 0 and x - 2 = 0

Multiply both equations

(x + 2)(x - 2) = 0

This gives

x^2 - 4 = 0 --- option (a)

Add 4 to both sides

x^2 = 4

Multiply by 4

4x^2 = 16 --- option (d)

Hence, the equations that are true for x = -2 and x = 2 are (a) x^2 - 4 = 0 and (d) 4x^2 = 16

Read more about equations at:

brainly.com/question/2972832

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2 years ago

A 32-foot ladder is leaning against a building and forms a 29. 37° angle with the ground. How far away from the building is the

Amiraneli [1.4K]

Check the picture below.

Make sure your calculator is in Degree mode.

3 0

2 years ago

Help me with this please

zzz [600]

The answer is C: 3x + 30 = 11x.

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7 0

4 years ago

Read 2 more answers

Jon has $5,000 to invest in a savings account that has interest compounded annually. If he wants his money to double in eight ye

Sergio [31]

Answer:

Rate=9.05%

Step-by-step explanation:

Let P represent the Principal ,t the time = 8 years and r be the rate of interest.

It is given money doubles in 8 years so A=2P.

The compound interest is given by the formula :

$A= P(1+r^{)t}$

Substituting the values we have:

$2P=P( 1+r^){8}$

Dividing both sides by P :

$2=(1+r)^{8}$

$2^{\frac{1}{8} } =1+r$

1.0905-1=r

r=0.09050

r=9.05%

4 0

4 years ago

Read 2 more answers

What is 3/8 divided by 5/12

Marat540 [252]

Answer:

it would be 9/10.

Step-by-step explanation:

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3 years ago