A+ Answers
Exam: 007030RR - Exponents and Roots
1. What is the value of j in the equation v j + v j + 14 = 3v j + 10?
A. 4
B. 2
C. v 2
D. 16
2. Simplify the expression insert .
A.
B.
C.
D.
3. In a right triangle, one leg measures 4 inches and the other leg measures 6 inches. What is the length of
the hypotenuse in inches?
A. v 52
B. 52
C. 2v 13
D. 10
4. Simplify the following expression .
A. a
-6
B. ab
b
-2
C.
D. a
4
b
3
5. Simplify the expression .
A.
B.
C.
D.
6. In a right triangle, the length of the hypotenuse is 20 inches and the length of one leg is 15 inches. What
is the length of the other leg in inches?
A. 5
B. v 7
C. 25
D. 5v 7
7. Find the value of x in the equation 2v x + 20 = 15 + 3v x .
A. 25
B. 16
C. –5
D. 1
8. Find the square root of the fraction .
A.
B.
C.
D.
9. Simplify the expression .
A. .
B. .
C. .
D. .
10. Write the expression 2
A.
_______
∛
2
5
B.
_______
∛
32
C.
D.
3
/
5
as a radical.
11. Find the value of x in the equation v x + 5 = v x + 45.
A. 2
B. 16
C. 4
D. 1
12. Write 34392.55 in scientific notation.
A. 3.439255 × 10
B. 3.439255 × 10
C. 3.439255 × 10
-4
-3
3
D. 3.439255 × 10
4
13. Write 0.0003532 in scientific notation.
A. 3.532 × 10
B. 3.532 × 10
C. 3.532 × 10
D. 3.532 × 10
-4
4
-5
5
14. Simplify the expression .
A. 2v6
B. 6v3
C.
D. 2v3
15. Simplify the expression .
A.
B. r
C. r
D.
-1s
4
-5s
4
16. Simplify the expression 2v 20 - 3v 7 - 2v 5 + 4v 63 .
A. 2v 20 - 3v 7 + 4v 63
B. 2v 20 - 3v 7 - 2v 5 + 4v 63
C. 2v 5 + 9v 7
D. 2v 20 - 4v 7 - 2v 5
17. If one leg of a right triangle measures 3 centimeters and the other leg measures 6 centimeters, what is
the length of the hypotenuse in centimeters?
A. 9
B. v 5
C. 5v 3
D. 3v 5
18. Divide by .
A.
B.
C.
D.
19. Write the number 0.000938 in scientific notion.
A. 9.38 × 10
B. 9.38 × 10
C. 9.38 × 10
D. 9.38 × 10
5
-5
-4
4
20. Simplify the expression (2v 27 ) · (3v 32 ).
A. 35v 6
B. 36v 24
C. 18v 6
D. 72v 6
10 years ago
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