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3 years ago

Subtract: 4x^3−6x^3+8x−9 from 7x^3−16x+18.

Mathematics

2 answers:

Hunter-Best [27]3 years ago

6 0

Answer:

3x(3x + 2)

Step-by-step explanation:

4x2 - 2x) - (-5x2 - 8x)

= 4x2 - 2x + 5x2 + 8x.

= 4x2 + 5x2 - 2x + 8x.

= 9x2 + 6x.

= 3x(3x + 2).

Bezzdna [24]3 years ago

6 0

Look at the attached picture⤴

Hope this will help u....:)

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A random sample of 10 employees for the Department of Health and Human Services has the following salaries in thousands of dolla

julsineya [31]

Answer:

(68.58,71.82)

Step-by-step explanation:

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2 years ago

Solve the equation. Round to the nearest hundredth. Show work.

muminat

Answer:

Final answer is approx x=0.16.

Step-by-step explanation:

Given equation is $2.8\times 13^{4x} +4.8 = 19.3$

Now we need to solve equation $2.8\times 13^{4x} +4.8 = 19.3$ and round to the nearest hundredth.

$2.8\times 13^{4x} +4.8 = 19.3$

$2.8\times 13^{4x} = 19.3-4.8$

$2.8\times 13^{4x} = 14.5$

$13^{4x} = \frac{14.5}{2.8}$

$13^{4x} = 5.17857142857$

$\log(13^{4x}) = \log(5.17857142857)$

$4x \log(13) = \log(5.17857142857)$

$4x = \frac{\log(5.17857142857)}{\log\left(13\right)}$

$4x = 0.641154659628$

$x = \frac{0.641154659628}{4}$

$x = 0.160288664907$

Round to the nearest hundredth.

Hence final answer is approx x=0.16.

4 0

3 years ago

What is 40% of 80 i need help

kotegsom [21]

Answer: = 32

Step-by-step explanation:

40 x 80 / 100 = 32

4 0

3 years ago

Find the solution to the following system using substitution or elimination:

raketka [301]

Answer:

B) (3,1)

Step-by-step explanation:

y = -2x + 7

y = 3x - 8

3x - 8 = -2x + 7

combine like terms:

5x = 15

divide both sides of the equation by 5:

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3 years ago

Please help me with this homework

Nady [450]

Answer:

Rational

Step-by-step explanation:

The number comes to a stop (doesn't keep going), so it would be rational.

7 0

3 years ago

Read 2 more answers