Math Test Set 11

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1. Factor. \(x^{2} − 81\)

A.(x + 9)(x − 9)

B.(x + 9)(x + 9)

C.(x − 9)(x − 9)

D.Unfactorable

Question 1 of 10

2. Jane has a collection of marbles, consisting of 3 red, 4 green, 4 blue, and 3 orange marbles. She has offered two of her friends, David and Malcolm, that they may take one marble each. What is the probability that Malcolm chooses a red marble, given that David has already chosen a red marble?

 

A.\(\frac{1}{7}\)

B.\(\frac{2}{13}\)

C.\(\frac{3}{14}\)

D.\(\frac{1}{4}\)

Question 2 of 10

Math-Word problems

3. The number −10 is −5 times larger than an unknown number. Find the unknown number.

A.2

B.-2

C.4

D.-3

Question 3 of 10

Math-Square Roots

4. List all square roots of the given number. If the number has no square roots, choose “none”.

144

A.12, -12

B.10, -10

C.11, 12

D.-12, -10

Question 4 of 10

Math-Evaluate expression

5. \(3x^{2} + 3x − 4\) at \(x = 5\)

A.86

B.-86

C.90

D.43

Question 5 of 10

Math-Exponents

6. Simplify the given exponential expression.

\((uw)^{5}\)

A.\(u^{5}w^{5} \)

B.\(5uw^{5} \)

C.\(u^{4}w^{6} \)

D.\(-5uw^{5} \)

Question 6 of 10

Math-Combining Like Terms

7. Combine like terms by first rearranging the terms, then using the distributive property to factor out the common variable part, and then simplifying.

\(-2x^{3}− 19x^{2}y - 15x^{2}y + 11x^{3}\)

A.\(9x^{3} - 34x^{2}y \)

B.\(10x^{3} - 34x^{2}y \)

C.\(9x^{3} + 34x^{2}y \)

D.\(-9x^{3} - 34x^{2}y \)

Question 7 of 10

Math-Percent of number

8. 50% of what number is 58?

A.116

B.58

C.115

D.230

Question 8 of 10

Math- Equations

9. Solve the given equation for x.

14x + 16 = 44

A.2

B.-2

C.4

D.0

Question 9 of 10

Math-Slope

10. Use the substitution method to solve each of the following systems.

−7x + 7y = 63

y = 6 − 2x

A.(-1, 8)

B.-(1,8)

C.(1.6)

D.(2,16)

Question 10 of 10

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