Math Test Set 11

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1. \(\frac{5x+7y}{3(x +y)}\)

Simplify.

A.3

B.\(\frac{28}{3}\)

C.-1

D.No further simplification.

Question 1 of 10

2. Given two polygons, the first one having more sides than the second, let the following rule describe how to map the first polygon to the second polygon. (To help illustrate, refer to the two polygons pictured below.) Label the vertices of each polygon A, B, C, etc. Then, each vertex of polygon 1 is mapped to its corresponding vertex on polygon 2 (A to A, B to B, etc.). For all extra vertices of the first polygon (in this case G and H), they map to the final vertex of the second polygon (in this case to F). Is this rule a function? If not, why not?

A.Yes, this is a function.

B.No, functions relate only to equations and graphs.

C.No, because multiple vertices of the first polygon are mapped to the same vertex on the second polygon, which is the same as failing the vertical line test.

D.No, because this is not continuous; there is only a finite set of points, while functions (graphs) are an infinite set of points.

Question 2 of 10

3. 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 3 of 10

4. What is the slope of the line of best fit?

A.-1

B.24

C.1

D.-24

Question 4 of 10

Math-Solution of equations

5. Use the elimination method to solve each of the following systems.

27x − 6y = −96
−3x − 5y = 22

A.(-4,-2)

B.8

C.4

D.(-2,-4)

Question 5 of 10

Math-Evaluate expression

6. Evaluate a − \(b^{2}\) at a = −2.9 and b = −5.4

A.-32.06

B.32.06

C.32.08

D.-29.16

Question 6 of 10

7. Evaluate the expression at the given value of x.

\(−3x^{2}− 6x + 3\) at \(x = 7 \)

A.-186

B.186

C.-198

D.198

Question 7 of 10

Math-Word problems

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

A.1

B.0

C.-1

D.2

Question 8 of 10

Math- Equations

9. Solve the equation.

7x + 11 = 16 − 18x

A.\(\frac{1}{5}\)

B.\(-\frac{1}{5}\)

C.5

D.\(\frac{1}{15}\)

Question 9 of 10

Math-Percent to decimal

10. Convert the given decimal to a percent.

8.888

A.888.8%

B.88.88%

C.8.888%

D.0.8888%

Question 10 of 10

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