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luda_lava [24]
3 years ago
9

Please Help!!! I will give extra points and mark u brainiest!!!!!

Mathematics
2 answers:
klemol [59]3 years ago
8 0

Answer:

100 pi

Step-by-step explanation:

you do

4pi x 5 squared

marin [14]3 years ago
7 0

Answer:

100π cm²

Step-by-step explanation:

The surface area (A) of a sphere is calculated as

A = 4πr² ( r is the radius )

Here d = 10, thus r = 10 ÷ 2 = 5, so

A = 4π × 5² = 4π × 25 = 100π cm²

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Use the sample information 11formula13.mml = 37, σ = 5, n = 15 to calculate the following confidence intervals for μ assuming th
bija089 [108]

Answer & Step-by-step explanation:

The confidence interval formula is:

I (1-alpha) (μ)= mean+- [(Z(alpha/2))* σ/sqrt(n)]

alpha= is the proposition of the distribution tails that are outside the confidence interval. In this case, 10% because 100-90%

σ= standard deviation. In this case 5

mean= 37

n= number of observations. In this case, 15

(a)

Z(alpha/2)= is the critical value of the standardized normal distribution. The critical valu for z(5%) is 1.645

Then, the confidence interval (90%):

I 90%(μ)= 37+- [1.645*(5/sqrt(15))]

I 90%(μ)= 37+- [2.1236]

I 90%(μ)= [37-2.1236;37+2.1236]

I 90%(μ)= [34.8764;39.1236]

(b)

Z(alpha/2)= Z(2.5%)= 1.96

Then, the confidence interval (90%):

I 95%(μ)= 37+- [1.96*(5/sqrt(15)) ]

I 95%(μ)= 37+- [2.5303]

I 95%(μ)= [37-2.5303;37+2.5303]

I 95%(μ)= [34.4697;39.5203]

(c)

Z(alpha/2)= Z(0.5%)= 2.5758

Then, the confidence interval (90%):

I 99%(μ)= 37+- [2.5758*(5/sqrt(15))

I 99%(μ)= 37+- [3.3253]

I 99%(μ)= [37-3.3253;37+3.3253]

I 99%(μ)= [33.6747;39.3253]

(d)

C. The interval gets wider as the confidence level increases.

8 0
3 years ago
4x-4x+7y-3y+x please help
KiRa [710]

Answer:

+ 4

Step-by-step explanation:

7 0
3 years ago
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If m< xyz=68 and m Mee!
torisob [31]

Answer:

Angle ZXY = 41 degrees.

Step-by-step explanation:

If WX is parallel to ZY then angle XZY = 71 degrees.

Angle ZXY = 180 - 68 - 71 = 41 degrees.

3 0
3 years ago
in the product rule for exponents, what do you do to the coefficients? what do you do to the exponents?
docker41 [41]

Answer:

Do not multiply the coefficients and the exponents. Remember, using the Product Rule add the exponents when the bases are the same.

5 0
3 years ago
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As an apprentice to a chef you are preparing a recipe that says to bake the dish for 3/4 of a hour how many minutes should you b
Shalnov [3]
Answer:
You should bake the dish for 45 minutes.

Explanation:
So you have 60 minutes in an hour and if you divide that in 4 you get 15. And for the last step you add 15 three times or just multiply 15*3 and get 45.
Hope this helps :D
8 0
3 years ago
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