ASVAB Math Knowledge Practice Test 937729 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.63
Score	0%	73%

Review

Solve for z:
-5z + 9 < -4 - 3z

55% Answer Correctly

	z < -1
	z < 2
	z < -\(\frac{3}{4}\)
	z < 6\(\frac{1}{2}\)

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 < sign and the answer on the other.

-5z + 9 < -4 - 3z
-5z < -4 - 3z - 9
-5z + 3z < -4 - 9
-2z < -13
z < \( \frac{-13}{-2} \)
z < 6\(\frac{1}{2}\)

To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?

84% Answer Correctly

	First
	Last
	Odd
	Inside

Solution

To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses.

If a = -9 and x = 7, what is the value of -a(a - x)?

69% Answer Correctly

	140
	-144
	16
	-120

Solution

To solve this equation, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)

-a(a - x)
-1(-9)(-9 - 7)
-1(-9)(-16)
(9)(-16)
-144

A(n) __________ is two expressions separated by an equal sign.

77% Answer Correctly

	expression
	problem
	equation
	formula

Solution

An equation is two expressions separated by an equal sign. The key to solving equations is to 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.

The formula for the area of a circle is which of the following?

78% Answer Correctly

	a = π d²
	a = π d
	a = π r
	a = π r²

Solution

The circumference of a circle is the distance around its perimeter and equals π (approx. 3.14159) x diameter: c = π d. The area of a circle is π x (radius)² : a = π r².