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forsale [732]
3 years ago
9

Is it true or false

Mathematics
2 answers:
3241004551 [841]3 years ago
7 0

True.

I hope this helps you

LiRa [457]3 years ago
5 0

I’m pretty sure it’s true! Sorry if it wrong! :)

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A circle has a center at (5, 5) and a radius of 2. If the format of the equation for the circle is (x − h)2 + (y − k)2 = r2, the
earnstyle [38]

Answer:

D:  r^2 = 4

Step-by-step explanation:

Square the radius:  r^2 = 2^2 = 4 (answer)

5 0
4 years ago
A rental car company claims the mean time to rent a car on their website is 60 seconds with a standard deviation of 22 seconds.
Gelneren [198K]

Answer:

Since the calculated value of Z does not fall in the critical region we accept our null hypothesis that mean = 60 seconds

Step-by-step explanation:

State the null hypothesis

H0: u = 60against the claim

Ha u≠   60   (this is a two tailed test)

Sample size n= 36

Sample mean=X`= 55

Population mean = u= 60

The significance level α = 0.05

Standard deviation= Sd = 22 seconds

Z= X`- u / Sd /√n

Z= 55- 60 / 22/√6

z= - 5/22/6

Z= -1.3635

The value of z from the table is Z∝/2= ±1.96

The critical region is less than - 1.96 and greater than 1.96.

Since the calculated value of Z does not fall in the critical region we accept our null hypothesis that mean = 60 seconds

4 0
3 years ago
Please can someone help me answer this?
Nataly_w [17]

Answer:

452.39 is the answer

Step-by-step explanation: Use the formula for the area of a sphere: 4 pi r^2, where R is the radius. R=6. Area=4 pi (6)^2=452.39=452.4 to the nearest tenth.

5 0
3 years ago
Read 2 more answers
Population in 1990 was 134 million. In 2000 it was 139 million. What was it in 2014
mihalych1998 [28]
Well first lets find the ROC (rate of change) in the sets of data.
1990 -> 134
2000 -> 139

so lets find the difference from the years given
2000-1990=10  so there is a 10 year gab
139-134=5  so there is a 5 million increase in the population 

so divide 10 by 5 which gives us 2, so every year there is a 2 million increase in the population. so from 2000 to 2014 there is 14 years, so 
14 x 2= 28, then add that to the latest population data
139+28=167
so the population in 2014 would be 167 million 

Hope this helped!!
7 0
3 years ago
What is the volume of this rectangular prism?<br> cm<br> 3<br> cm<br> 5<br> cm<br> 3<br> cm
exis [7]

Answer:

2cm³

Step-by-step explanation:

3 0
3 years ago
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