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Math Problems
Grade 8
Positive and negative square roots
What is the value of the expression
9
+
3
×
5
2
−
10
×
6
9+3\times5^{2}-10\times6
9
+
3
×
5
2
−
10
×
6
?
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The sum of two numbers is
27
27
27
and product is
182
182
182
. The numbers are:
\newline
10
10
10
and
15
15
15
\newline
18
18
18
and
14
14
14
\newline
12
12
12
and
15
15
15
\newline
11
11
11
and
24
24
24
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What is the average value of
6
x
2
+
8
6 x^{2}+8
6
x
2
+
8
on the interval
[
3
,
5
]
[3,5]
[
3
,
5
]
?
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What is the average value of
−
x
2
+
3
-x^{2}+3
−
x
2
+
3
on the interval
[
0
,
6
]
[0,6]
[
0
,
6
]
?
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Which two integers is
−
48
-\sqrt{48}
−
48
between?
\newline
Choices:
\newline
[
A
]
−
6
and
−
5
[A]-6 \text{ and } -5
[
A
]
−
6
and
−
5
\newline
[
B
]
5
and
6
[B]5 \text{ and } 6
[
B
]
5
and
6
\newline
[
C
]
−
7
and
−
6
[C]-7 \text{ and } -6
[
C
]
−
7
and
−
6
\newline
[
D
]
6
and
7
[D]6 \text{ and } 7
[
D
]
6
and
7
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What is
−
64
-\sqrt{64}
−
64
?
\newline
____
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