Algebra 1 : Algebra 1

Study concepts, example questions & explanations for Algebra 1

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Example Questions

Example Question #32 : Proportions

Solve for .

Possible Answers:

Correct answer:

Explanation:

To solve for , we just cross-multiply.

We have 

We get 

Example Question #1161 : Algebra 1

Solve for .

Possible Answers:

Correct answer:

Explanation:

To solve for , we just cross-multiply.

We have .

We now have .

Divide both sides by , we get 

Example Question #33 : Proportions

Solve for .

Possible Answers:

Correct answer:

Explanation:

To solve for , we just cross-multiply.

We have .

We now have .

Divide both sides by , we get 

Example Question #34 : Proportions

Solve for .

Possible Answers:

Correct answer:

Explanation:

To solve for , we just cross-multiply.

We have .

We now have .

Divide both sides by , we get 

Example Question #35 : Proportions

Solve for .

Possible Answers:

Correct answer:

Explanation:

To solve for , we just cross-multiply.

We have .

We now have .

Divide both sides by , we get 

Example Question #36 : Proportions

Solve for .

Possible Answers:

Correct answer:

Explanation:

To solve for , we just cross-multiply.

We have .

We now have 

Take square root on both sides. Remember, when we do that the answer is .

Two negative or two positive numbers multiplied can give us a positve value.   is the answer to that perfect square and we add the positive and negative sign to get .

Example Question #1164 : Algebra 1

Possible Answers:

Correct answer:

Explanation:

To solve for , we just cross-multiply.

We have .

When multiplying a negative and positive number, our answer is negative.

We now have .

We can divide both sides by  to get 

Take square root on both sides. Remember, when we do that the answer is . Two negative or two positive numbers multiplied can give us a positve value.   is the answer to that perfect square and we add the positive and negative sign to get .

Example Question #37 : Proportions

Solve for .

Possible Answers:

Correct answer:

Explanation:

To solve for , we just cross-multiply.

We have .

Remember we treat the expression and place into a parantheses. We take care of the parantheses first and distribute the .

We have .

Subtract both sides by 

We get 

Example Question #35 : Proportions

Solve for .

Possible Answers:

Correct answer:

Explanation:

To solve for , we just cross-multiply.

We have .

Remember we treat the expression and place into a parantheses. We take care of the parantheses first and distribute the .

We have .

Add both sides by .

We have

Then divide both sides by

We get 

Example Question #41 : Proportions

Solve for .

Possible Answers:

Correct answer:

Explanation:

To solve for  we want to isolate it on one side of the equation with all other constants on the other side.

Multiply both sides by .

We have .

Subtract both sides by .

We have .

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