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2 years ago

Hi, I have utterly no idea what I'm doing here.

Mathematics

2 answers:

Anna11 [10]2 years ago

6 0

Answer:

Factored form: 2x(2x^2+x+1)

Step-by-step explanation:

You're subtracting them. :)

kompoz [17]2 years ago

5 0

Answer:

2x(4x^2+x+1)

Step-by-step explanation:

f(x) = 9x^3 + 2x^2 - 5x + 4

g(x) = 5x^3 +0x^2 - 7x + 4

f(x) - g(x) =

=(9x^3-5x^3) + (2x^2-0x^2) + (-5x - (-7x)) + (4-4) = 4x^3 +2x^2 +2x

=2x(4x^2+x+1)

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Which equation below would be best solved by using the addition property of equality?

Svetradugi [14.3K]

Answer: F-23=45

Step-by-step explanation:

The addition property of equality means that if:

A = B

then we can add the same thing in both sides of the equation, and the equality will remain balid, so:

A + C = B + C.

Then, the correct answer is the last option:

F - 23 = 45

Then we can add the same number to both sides, we can add 23 to both sides and in this way isolate F:

F - 23 = 45

(F - 23) + 23 = 45 +23 = 68

F + (23 - 23) = 68

F = 68

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Answer:

$82.5

Step-by-step explanation:

$16.50 * 5 = $82.5

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2 years ago

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Last year, Austin opened an investment account with $6800. At the end of the year, the amount in the account had increased by 6.

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2 years ago

Solve for b. 5 + 2b = 9 Show your work for each step as you solve for b.

Dahasolnce [82]

Answer:

$\boxed{\sf{b=2}}$

Step-by-step explanation:

Isolate the b from one side of the equation.

First, subtract by 5 from both sides.

$\sf{5+2b-5=9-5}$

Solve.

Subtract.

9-5=4

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2b/2=4/2

Solve.

Divide the numbers from left to right.

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Therefore, the correct answer is b=2.

I hope this helps, let me know if you have any questions.

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