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Elden [556K]
4 years ago
6

I'LL MARK YOU AS A BRAINLIEST PLZ ANSWER is radical 43/2 rational or irrational

Mathematics
2 answers:
fredd [130]4 years ago
8 0

Answer:

i said rational on ur other post bc i know its rational hope this helps

Step-by-step explanation:

vladimir1956 [14]4 years ago
4 0

Answer:

i think its rational

Step-by-step explanation:

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A hole of radius 6cm is drilled through a right circular cylinder whose base radius and height are 9cm and 12cm respectively. Wh
eduard

Answer:

CSA of cylinder= 2πr(h+r)

=2 π×9 (21)

= 378π cm²

now

CSA of hole= 2πr

12π cm²

7 0
3 years ago
Help!!!!!!!!!!!!!!!!!!
notsponge [240]
The answer to this would be 40 degrees.
3 0
3 years ago
A random sample of size 15 taken from a normally distributed population revealed a sample mean of 75 and a sample variance of 25
GREYUIT [131]

Answer:

The upper limit of a 95% confidence interval for the population mean would equal 83.805.

Step-by-step explanation:

The standard deviation is the square root of the variance. Since the variance is 25, the sample's standard deviation is 5.

We have the sample standard deviation, not the population, so we use the t-distribution to solve this question.

T interval:

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 15 - 1 = 14

Now, we have to find a value of T, which is found looking at the t table, with 14 degrees of freedom(y-axis) and a confidence level of 0.95(t_{95}). So we have T = 1.761

The margin of error is:

M = T*s = 1.761*5 = 8.805.

The upper end of the interval is the sample mean added to M. So it is 75 + 8.805 = 83.805.

The upper limit of a 95% confidence interval for the population mean would equal 83.805.

4 0
4 years ago
9x-(-2y)-8x-(-12y) simplify​
Elina [12.6K]

Answer:

x+14y

Step-by-step explanation:

9x+2y-8x+12y

x+14y

8 0
4 years ago
Aaliyah and Victoria ran laps after school to train for the soccer team. The ratio of the number of laps Aaliyah ran to the numb
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4 because aaliyahs laps multiplied by two so you do 2x4
4 0
3 years ago
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