1. Which expression is equivalent to 5(x + 3y) + 4(2x + 5)?
1 answer:
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Answer:
Perry's claim is correct while Karina is incorrect
Step-by-step explanation:
Question is incomplete (See Attachment)
First, we need to determine the area covered by Karina and Perry
For Karina, there are 9 square boxes each of which has an area of 1 unit sq
So:
For Perry:
There are 18 square boxes, each of which has an area of 1 unit sq.
So:
Comparing both areas, we can conclude that <em>Perry's claim is correct while Karina is incorrect</em>
Answer:
- the sample mean is 44
- the sample standard deviation is 12.35
Step-by-step explanation:
given information:
data, = 36.45, 67.90, 38.77, 42.18, 26.72, 50.77, 39.0, 50.23
the number of data, n = 8
the sample mean, xbar
xbar = ∑/n
= (36.45+67.90+38.77+42.18+26.72+50.77+39.0+50.23)/8
= 352.08/8
= 44
standard deviation, s
s =
=
=
= 12.35
Answer:
r = - 29
Step-by-step explanation:
Given
- 3r = 87 ( divide both sides by - 3 )
r = = - 29