Answer:
The first two is x=60
Step-by-step explanation:
1.5/90 = 1/x
1.5x = 90 x 1
1.5x/1.5 = 90/1.5
x = 60
1 * 7 + 2 * 1 + 3 * 3 + 4 * 2 + 5 * 2 =
7 + 2 + 9 + 8 + 10 =
36
Now we need to divide 36 by the total frequency: 7+1+3+2+2=15
36 / 15 = 2.4
Answer:
p
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+
q
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r
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p
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Regroup terms.
p
a
−
p
b
+
q
a
−
r
a
+
r
b
−
q
b
Factor
p
out of
p
a
−
p
b
.
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p
(
a
−
1
b
)
+
q
a
−
r
a
+
r
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−
q
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Rewrite
−
1
b
as
−
b
.
p
(
a
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b
)
+
q
a
−
r
a
+
r
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−
q
b
Factor out the greatest common factor from each group.
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p
(
a
−
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)
+
a
(
q
−
r
)
−
b
(
−
r
+
q
)
Factor the polynomial by factoring out the greatest common factor,
q
−
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.
p
(
a
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)
+
(
q
−
r
)
(
a
−
b
)
Factor
a
−
b
out of
p
(
a
−
b
)
+
(
q
−
r
)
(
a
−
b
)
.
Tap for more steps...
(
a
−
b
)
(
p
+
q
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r
)
82
Explanation
the average is calculated by dividing the sum of the values in the set by their number.
Step 1
Let
Step 2
apply the equation
so, the answer is 82
