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algol13
3 years ago
9

(-4ab+8a-2) - (-4ab-9)

Mathematics
1 answer:
lawyer [7]3 years ago
6 0

Answer:

 -a2 • (2a - b - 3c)

Step-by-step explanation:

Equation at the end of step  1  :

 ((4ab - 23a2) + 12ac)

 ————————————————————— • a

           4          

Step  2  :

           -8a2 + 4ab + 12ac

Simplify   —————————————————

                   4        

Step  3  :

Pulling out like terms :

3.1     Pull out like factors :

  -8a2 + 4ab + 12ac  =   -4a • (2a - b - 3c)  

Equation at the end of step  3  :

 -a • (2a - b - 3c) • a

Step  4  :

Multiplying exponential expressions :

4.1    a1 multiplied by a1 = a(1 + 1) = a2

Final result :

 -a2 • (2a - b - 3c)

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Answer: 9/40

Step-by-step explanation: To write a percent as a fraction in lowest terms, remember that a percent is a ratio that compares a number to 100.

So here, 22.5% can be written as the ratio 22.5 to 100 or 22.5/100.

Notice however that 22.5/100 is not in lowest terms so we need to multiply the numerator and the denominator of 22.5 by 10 in order to remove the decimal point. When we do this, we will end up with the fraction 225/1000.

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Step-by-step explanation:

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Solve these compound interest problems and round your answer to the nearest 100th.
MatroZZZ [7]

Answer:

$2,226.96

Step-by-step explanation:

You are going to want to use the compound interest formula, which is shown below.

A=P(1+\frac{r}{n} )^{nt}

<em>P = initial balance </em>

<em>r = interest rate </em>

<em>n = number of times compounded annually </em>

<em>t = time </em>

<em />

First, change 10% into its decimal form:

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Now lets plug in the values into the equation:

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The final amount after 15 years is $2,226.96

4 0
3 years ago
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