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Dovator [93]
3 years ago
12

Whats the area? thanks!

Mathematics
1 answer:
AlladinOne [14]3 years ago
8 0
The area is 279. You do 11×19 to get the bottom portion. That will give you 209. Then for the top subtract 11 from 18 to get that side length and then do 7×10. With that you will get 70 and then you add 209 to that. 209+70=279.
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How does the volume of a cylinder change when it’s diameter is doubled
zavuch27 [327]
Recallin that, the diameter is twice as long as the radius, namely the radius is half the diameter, so, if the diameter is doubled, the radius is also doubled.

\bf \textit{volume of a cylinder}\\\\
V=\pi r^2 h\quad 
\begin{cases}
r=radius\\
h=height\\
-----\\
r=\stackrel{doubled}{2r}
\end{cases}\implies V=\pi (2r)^2 h
\\\\\\
V=\pi (2^2r^2)h\implies V=\pi 4r^2 h\implies V=4~(\pi r^2 h)

notice, the new volume is 4 times (πr² h), namely 4 times the original.
8 0
3 years ago
For a recent report on sleep deprivation, the Centers for Disease Control and Prevention interviewed 11600 residents of Californ
Pani-rosa [81]

Answer:

H0: p1-p2=0

Ha: p1-p2≠0

This hypotheses can be written as

H0: p1=p2

Ha: p1 ≠p2  

Step-by-step explanation:

Here the claim is if these data provide strong evidence the rate of sleep deprivation is different for the two states which will be formulated as alternate hypothesis .

Ha: p1-p2≠0  

The null hypothesis is

H0: p1-p2=0  i.e these data  do not provide strong evidence the rate of sleep deprivation is different for the two states.

where p1  =   as population 1 of California

p2= as population 2 of Oregon

This hypotheses can be written as

H0: p1=p2

Ha: p1 ≠p2  

which will also give the same results as above and a two tailed test will be performed for both hypotheses.

4 0
3 years ago
A skateboard ramp is 4 feet high and makes a 5 degree angle of elevation. To the nearest foot, how long is the ramp?
Alla [95]

Answer:

The ramp is 5 feet high I think

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Katie said, "Negative numbers are integers". What was her error?
Sunny_sXe [5.5K]
Negative numbers are integers.The set of integers include negative numbers, positive numbers, and zero 
6 0
3 years ago
In a bag of marbles 12% were red and 14% were blue,and the rst were white.If there were 250 marbles, how many were red and blue?
GenaCL600 [577]

Answer:

65

Step-by-step explanation:

Hi,

I think you mean red or blue.

Number which are red or blue = 12 + 14

= 26% or 0.26

The number of red and blue = 0.26 * 250

=  65 marbles

4 0
3 years ago
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