1.
The radius of a sphere is given by
, where
A
is the surface area of the sphere. Suppose a sphere has a surface area of 36 square inches. What is the measure of the radius? (Round to the nearest tenth of an inch.)
A.
2.9 inches
B.
3.4 inches
C.
3 inches
D.
1.7 inches
Hint
2.
The distance
d
between any two points with coordinates (
x
1
,
y
1
) and (
x
2
,
y
2
) is given by the formula _____.
A.
B.
C.
D.
Hint
3.
Simplify
. Use absolute value symbols if necessary.
A.
B.
C.
D.
Hint
4.
Which property is very useful in simplifying radical expressions such as
?
A.
Quotient Property of Square Roots
B.
Product Property of Square Roots
C.
Distributive Property
D.
Pythagorean Theorem
Hint
5.
The set {0, 1, 2, 3, 4, …} refers to the ______________.
A.
natural numbers
B.
whole numbers
C.
rational numbers
D.
integers
Hint
6.
Find the distance between the two points.
A.
2 units
B.
units
C.
5 units
D.
units
Hint
7.
Simplify
.
A.
B.
C.
D.
Hint
8.
Simplify
.
A.
12
B.
C.
D.
Hint
9.
Solve
.
A.
k
= 19
B.
k
= 23
C.
k
= 16
D.
k
= 25
Hint
10.
Solve
.
A.
d
= 7 and
d
= 4
B.
no solution
C.
d
= 7
D.
d
= 4
Hint