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attashe74 [19]
3 years ago
13

6

Mathematics
1 answer:
Marysya12 [62]3 years ago
8 0
I think the answer is 5 not sure tho
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The volume of a sphere is found using the formula V= 4/3 3.14r^3. If the radius of a sphere is 3/4 feet, what is the volume of t
Rufina [12.5K]
The volume of the sphere is expressed in the formula V= 4/3 3.14r^3 and we are given the radius of the sphere. to find the volume, we can directly substitute r as the unit of the volume to be determined is consistent with the given. Hence, via subsitution, the answer is 1.7671 cubic feet 
6 0
3 years ago
It is believed that the average amount of money spent per U.S. household per week on food is about $98, with standard deviation
Makovka662 [10]

Answer:

Test statistic = 2

P-value = 0.0227                                

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = $98

Sample mean, \bar{x} = $100

Sample size, n = 100

Population standard deviation, σ = $10

First, we design the null and the alternate hypothesis

H_{0}: \mu = 98\text{ dollars}\\H_A: \mu > 98\text{ dollars}

Formula:

z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

z_{stat} = \displaystyle\frac{100 - 98}{\frac{10}{\sqrt{100}} } = 2

Now, we can calculate the p-value from the normal table

P-value = 0.0227

 

6 0
4 years ago
The following show a change of scale made by an architect in one of his drawings.Old: 1 in. =16 cm. New:1in. =2cm Which is the c
Varvara68 [4.7K]
The scale factor changes by 1/8.

The numerator, 1 stays the same; the denominator changes. 16/2 = 8; it is 1/8 the scale of the previous scale.
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What is <br> 2/3 x 1/2 x 3/4
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1/4 since 2/3 times 1/2 is 1/3 and if u multiply that by 3/4, the result is 3/12 which can be simplified to 1/4
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The answer is 15 cough drops
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