Math Test Set 11

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1. 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 1 of 10

2. \(\frac{x-y}{x^{2}-2xy+y^{2}}\)

Simplify.

 

A.x + y

B.xy

C.\(\frac{1}{x} - y\)

D.x - y

Question 2 of 10

3. Which equation is a direct variation?

A.y = − 0.7x

B.y= \(\frac{21}{x}\)

C.y-x=4

D.y=3x+2

Question 3 of 10

4. Is the following a function? Explain why or why not.

A.Yes, this does represent a function, because all the points are distinct (none of them are coincident.

B.No, this does not represent a function, since a function can not be made up of only points.

C.No, this does not represent a function, since it fails the vertical line test.

D.No, this does not represent a function, since a function is made up of many more points.

Question 4 of 10

Math-Distributive Property

5. Use the distributive property to expand the given expression.

\(10s^{2}(−10s^{3} + 2s^{2} + 2s+ 8)\)

A.\(-100s^{5}+ 20s^{4} + 20s^{3} + 80s^{2}\)

B.\(100s^{5}+ 20s^{4} + 20s^{3} + 80s^{2}\)

C.\(-100s^{5} - 20s^{4} + 20s^{3} + 80s^{2}\)

D.\(100s^{5} + 20s^{4} + 20s^{3} - 80s^{2}\)

Question 5 of 10

Math-Word problems

6. Two less than nine times an unknown number is 7. Find the unknown number.

A.1

B.0

C.-1

D.2

Question 6 of 10

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

A.2

B.-2

C.4

D.-3

Question 7 of 10

Math-Solution of equations

8. Which of the points (−2, 12), (−1, 12), (3, −10), and (−2, 14) is a solution of the equation y = −5x + 4?

A.(−2, 14)

B.(3, −10)

C.(−2, 12),

D. (−1, 12)

Question 8 of 10

Math- Equations

9. Solve the equation.

11x + 10 = 19x + 20

A.\(-\frac{5}{4}\)

B.\(\frac{5}{4}\)

C.8

D.-8

Question 9 of 10

Math-Evaluate expression

10. \(3x^{2} + 3x − 4\) at \(x = 5\)

A.86

B.-86

C.90

D.43

Question 10 of 10

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