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Eddi Din [679]
3 years ago
5

Please help with this problem!!

Mathematics
2 answers:
Katen [24]3 years ago
6 0

Answer:

Step-by-step explanation:

d = 2 times radius = 2* 6 = 12 feet

c = πd = 3.14 * 12 = 37.68 Sq. feet

VladimirAG [237]3 years ago
5 0

Answer:C= 37.68 or 12pi

Step-by-step explanation:

First, diameter= 2 times the radius. So, in this case 6*2=12 which would be the diameter. Now, we have to figure out the circumference. c=pi*12. If we wanted to do the actual calculation just do: 12*3.14 which would get you 37.68 or 12pi

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Test scores: Scores on a statistics exam had a mean of 75 with a standard deviation of 5. Scores on a calculus exam had a mean o
beks73 [17]

Answer:

CV for statistics exam = 15%

CV for calculus exam = 19%

Since the CV for calculus exam is higher, it has a greater spread relative to the mean than the statistics exam.

Step-by-step explanation:

To find coefficient variation we use the formula:

CV = (SD/mean) * 100

CV for the statistics exam:

where; SD= 5

mean= 75

CV = ( 5/75) *100

= 0.15 or 15%

CV for calculus exam

SD = 11

Mean= 58

CV= (11 /58) * 100

= 0.19 or 19%

8 0
3 years ago
PLEASE HELP DUE AT 9 AM EST!!!! SHOW HOW YOU GOT YOU ANSWER BY SHOWING YOUR WORK/ SHOW HOW YOU GOT THE ANSWER STEP BY STEP PLS!
Rufina [12.5K]

Answer:

X = 4

Step-by-step explanation:

In the equation add 3 to both sides of the equation

1/2x-3+3=2-3/4x+3

Simplify

1/2x = -3/4x + 5

Add 3/4x to both sides

1/2x + 3/4x = -3/4x + 5 + 3/4x

Simplify

5/4x=5 Multiply both sides by 5

5x=20 divide both sides by 5

5x divided by 5 and 20 divided by 5

=4

5 0
3 years ago
Consider the equation and its solution.
madreJ [45]
30 Me mark as brainlist
6 0
2 years ago
According to a Gallup survey conducted in July 2011, 20% of Americans favor reducing the U.S. budget deficit by using spending c
Yakvenalex [24]

Answer:

Option C is correct.

The test statistic for this question is -3.13

Step-by-step explanation:

To compute the z-test statistic, the formula is given as

z = (x - μ₀)/σₓ

x = p = sample proportion of the 500 college students sampled, that favor reducing the deficit using only spending cuts with no tax increase = (75/500) = 0.15

μ₀ = p₀ = the proportion to be compared against, that is, the proportion of Americans that favor reducing the U.S. budget deficit by using spending cuts only, with no tax increases = 20% = 0.20

σₓ = standard error of the sample proportion = √[p(1-p)/n]

p = 0.15

n = Sample size = 500

σₓ = √[0.15×0.85/500] = 0.01597

z = (0.15 - 0.20) ÷ 0.01597

z = -3.13

Hope this Helps!!!

8 0
3 years ago
Which equation represents this number sentence?
TiliK225 [7]
It would be the third one 7n=10-3n
5 0
3 years ago
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