ASVAB Math Knowledge Practice Test 482483 Results

Your Results Global Average
Questions 5 5
Correct 0 2.72
Score 0% 54%

Review

1

Factor y2 + 10y + 24

54% Answer Correctly
(y - 4)(y + 6)
(y - 4)(y - 6)
(y + 4)(y + 6)
(y + 4)(y - 6)

Solution

To factor a quadratic expression, apply the FOIL method (First, Outside, Inside, Last) in reverse. First, find the two Last terms that will multiply to produce 24 as well and sum (Inside, Outside) to equal 10. For this problem, those two numbers are 4 and 6. Then, plug these into a set of binomials using the square root of the First variable (y2):

y2 + 10y + 24
y2 + (4 + 6)y + (4 x 6)
(y + 4)(y + 6)


2

The endpoints of this line segment are at (-2, 3) and (2, -3). What is the slope-intercept equation for this line?

41% Answer Correctly
y = 2x - 3
y = -1\(\frac{1}{2}\)x + 0
y = 3x + 4
y = -2x - 1

Solution

The slope-intercept equation for a line is y = mx + b where m is the slope and b is the y-intercept of the line. From the graph, you can see that the y-intercept (the y-value from the point where the line crosses the y-axis) is 0. The slope of this line is the change in y divided by the change in x. The endpoints of this line segment are at (-2, 3) and (2, -3) so the slope becomes:

m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(-3.0) - (3.0)}{(2) - (-2)} \) = \( \frac{-6}{4} \)
m = -1\(\frac{1}{2}\)

Plugging these values into the slope-intercept equation:

y = -1\(\frac{1}{2}\)x + 0


3

A cylinder with a radius (r) and a height (h) has a surface area of:

54% Answer Correctly

π r2h

4π r2

2(π r2) + 2π rh

π r2h2


Solution

A cylinder is a solid figure with straight parallel sides and a circular or oval cross section with a radius (r) and a height (h). The volume of a cylinder is π r2h and the surface area is 2(π r2) + 2π rh.


4

Simplify (5a)(3ab) - (3a2)(9b).

63% Answer Correctly
-12a2b
42ab2
12ab2
96a2b

Solution

To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.

(5a)(3ab) - (3a2)(9b)
(5 x 3)(a x a x b) - (3 x 9)(a2 x b)
(15)(a1+1 x b) - (27)(a2b)
15a2b - 27a2b
-12a2b


5

Solve for c:
-5c - 2 = -3 - 6c

60% Answer Correctly
\(\frac{5}{9}\)
-\(\frac{3}{5}\)
\(\frac{3}{4}\)
-1

Solution

To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the equal sign and the answer on the other.

-5c - 2 = -3 - 6c
-5c = -3 - 6c + 2
-5c + 6c = -3 + 2
c = -1