Question of the Day

Can you answer today's question?

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6/1

Feb

15

2013

247,776 responses

Question of the Day Statistics
	Number Answered
Correct	146,227
Incorrect	101,549

59% correct

Mathematics > Standard Multiple Choice

Read the following SAT test question and then click on a button to select your answer.

First, is subtracted from and the square root of the difference is taken. Then, is added to the result, giving a final result of . What is the value of ?

Hint

When is subtracted from , the result can be written as x minus 3 . The square root of this difference is square root (x minus 3) . What does the rest of the question tell you about ?

Question of the Day

Can you answer today's question?

Register Next Tests:
6/1

Feb

15

2013

247,776 responses

Question of the Day Statistics
	Number Answered
Correct	146,227
Incorrect	101,549

59% correct

Mathematics > Standard Multiple Choice

Read the following SAT test question and then click on a button to select your answer.

First, is subtracted from and the square root of the difference is taken. Then, is added to the result, giving a final result of . What is the value of ?

Answer

When is subtracted from , the result is x minus 3 . The square root of this difference is square root (x minus 3) . When is added to , the final result is . This can be written as (square root (x minus 3)) plus 5 = 9 . Subtracting from both sides gives the equation square root (x minus 3) = 4 . Squaring both sides of this equation gives x minus 3 = 16 , or x = 19 .