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High School Math : Pre-Algebra

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8 Diagnostic Tests 613 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #242 : Algebraic Equations

2.4X+1.6X=16

X=?

Possible Answers:

Correct answer:

Explanation:

This is a two-step equation. First you must add the decimals up to have a singular variable element

2.4X+1.6X=16

$\left ( 2.4+1.6\right )X=16$

4X=16

Then divide both sides by 4:

$\frac{4X}{4}=\frac{16}{4}$

X=4

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Example Question #351 : Pre Algebra

Solve the equation for . (Round to two decimal places).

$\small 1.22n+4=3.5$

Possible Answers:

$\small n=0.41$

$\small n=-6.15$

$\small n=-0.41$

$\small n=6.15$

Correct answer:

$\small n=-0.41$

Explanation:

$\small 1.22n+4=3.5$

Subtract from both sides of the equation, and simplify.

$\small 1.22n+4-4=3.5-4$

$\small \small 1.22n=-0.50$

Divide both sides by 1.22 . Be careful of the negative sign.

$\small \frac{1.22n}{1.22}=-\frac{0.50}{1.22}$

$\small n=-0.41$

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Example Question #505 : High School Math

2.5x+10=30

Solve for

Possible Answers:

x=8

x=5

x=2.4

x=10

x=16

Correct answer:

x=8

Explanation:

The goal is to get alone on one side. Therefore you subtract from both sides to get 2.5x=20 . Then divide both sides by 2.5 to get alone.

20/2.5=8 .

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Example Question #4 : How To Solve Two Step Equations With Decimals In Pre Algebra

Josie buys $\$12.38$ worth of groceries. The sales tax is $3.875\%$ . If she pays with $\$20$ , how much change should she get?

Possible Answers:

$\$7.62$

$\$6.19$

$\$7.14$

$\$6.58$

$\$5.97$

Correct answer:

$\$7.14$

Explanation:

The sales tax is $12.38\cdot 0.03875=0.479$

The total grocery bill is 12.38+0.48=12.86 .

The change is 20-12.86=7.14 .

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Example Question #611 : High School Math

Find the perimeter of a triangle with sides $A=17\ in, B=6\ in, and\ C=12\ in$

Possible Answers:

$35\ inches$

$45\ inches$

$17\ inches$

$15\ inches$

$30\ inches$

Correct answer:

$35\ inches$

Explanation:

Add up all of the sides to get 35 inches.

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Example Question #2 : How To Find The Perimeter Of A Triangle In Pre Algebra

What is the perimeter of a triangle with side lengths of ,, and ?

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a triangle you must add all of the side lengths together.

In this case our equation would look like 5+12+15

Add the numbers together to get the answer .

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Example Question #352 : Pre Algebra

What is the perimeter of a triangle with side lengths of , , and ?

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a triangle you must add all of the side lengths together.

In this case our equation would look like 17+19+32

Add the numbers together to get the answer .

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Example Question #3 : Perimeter Of A Figure

What is the perimeter of a triangle with side lengths of $8,9,and\ 15?$

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a triangle you must add all of the side lengths together.

In this case our equation would look like 8+9+15=P

Add the numbers together to get the answer .

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Example Question #5 : How To Find The Perimeter Of A Triangle In Pre Algebra

What is the perimeter of a triangle with side lengths of , , and ?

Possible Answers:

P=25

P=15

P=30

P=5

Correct answer:

P=15

Explanation:

To find the perimeter of a triangle you must add the three side lengths together.

In this case our equation would look like P=5+5+5

Add the numbers together to get the answer P=15 .

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Example Question #353 : Pre Algebra

What is the perimeter of a triangle with side lengths of , , and ?

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a triangle, add the lengths of all sides together:

5+12+13=30

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High School Math : Pre-Algebra

Study concepts, example questions & explanations for High School Math

All High School Math Resources

Example Questions

Example Question #242 : Algebraic Equations

Example Question #351 : Pre Algebra

Example Question #505 : High School Math

Example Question #4 : How To Solve Two Step Equations With Decimals In Pre Algebra

Example Question #611 : High School Math

Example Question #2 : How To Find The Perimeter Of A Triangle In Pre Algebra

Example Question #352 : Pre Algebra

Example Question #3 : Perimeter Of A Figure

Example Question #5 : How To Find The Perimeter Of A Triangle In Pre Algebra

Example Question #353 : Pre Algebra

All High School Math Resources

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