10 to the second power is 100 so the question is asking you to divide 639.5 by 100 which is 6.395
Answer:
-5
Step-by-step explanation:
first step is to split each segment
-32/4-3-6+12
becomes
-32/4(-3(-6(+12
so -32/4 = -8
then we get the next letter
-8-3 = -11
then
-11-6 = -17
then
-17+12 = -5
the answer is -5
Answer:
∠ XYZ ≈ 66.4°
Step-by-step explanation:
Using the cosine ratio in the right triangle
cosY = = = , then
∠ Y = ( ) ≈ 66.4° ( to 1 dec. place )
Answer: (6,-3)
Explanation:
(1) 2
x-3y=21
(2) y
=
3
−
x
Substituting eq 2 in eq 1
2
x
−
3
(
3-x)=21
2
x-9+3x=21
5
x
−
9
=
21
5
x
=
30
x
=
6
Put x=
6 in eq 2 we get,
y
=3
−
6
y
=
−
3
Solution : (
6
,
−
3
)
The mean of the frequency distribution is 6.0 .
In mathematics and statistics, the arithmetic mean or arithmetic average is referred to as the sum of a set of numbers divided by the total number of numbers in the set.
The formula to calculate mean is,
Mean = sum of all observations / total number of observations
x = 4 5 6 7 8
f = 12 1 8 18 4
∑f = 12 + 1 + 8 + 18 + 4 = 43
fx = 48 5 48 126 32
∑fx = 48 + 5 + 48 + 126 + 32 = 259
Mean = ∑fx / ∑f
Mean = 259 / 43
Mean = 6.02
Mean = 6.0 ( After Round Off )
So, we can conclude that the mean of the frequency distribution is 6.0 .
To know more about Mean refer to the link:
brainly.com/question/1136789
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