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olga nikolaevna [1]
3 years ago
7

Can you help me on this question I really need help

Mathematics
1 answer:
gogolik [260]3 years ago
7 0

-5/8 or -8/5 so that is tgd answer yeah

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A cone has a radius of 200 m at its base. The cone is 50 m high. How much space is inside the cone?
Sauron [17]

The question "how much space is inside a solid?" is actually asking about the volume of that solid.

The volume of a cone is given by

V = \dfrac{1}{3}\pi hr^2

where h is the height of the cone, and r is its radius.

So, you only need to plug in the values:

V = \dfrac{1}{3}\pi\cdot 50 \cdot 200^2 = \dfrac{2000000\pi}{3}m^3

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3 years ago
Divide 6 1/3 by 3/7
ryzh [129]
First, make 6 1/3 a improper fraction: 6 \frac{1}{3}= \frac{19}{3}}. Now we have 19/3*7/3: \frac{19}{3}* \frac{7}{3}= \frac{133}{9}.
3 0
3 years ago
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Test the claim that the mean GPA of night students is larger than 3.1 at the .10 significance level. The null and alternative hy
Alborosie

Answer:

H 0 : μ = 3.1    H 1 : μ > 3.1

And this test is defined a a right tailed test since the symbol for the alternative hypothesis H1 is >.

t = \frac{3.13-3.1}{\frac{0.03}{\sqrt{75}}}= 8.66

df = n-1=75-1 =74

The p value is:

p_v = P(t_{74} >8.66) =3.65x10^{-13}

The significance level is: 0.1 or 10%

And since the p value is very low compared to the significance level we have enough evidence to:

Reject the null hypothesis

Step-by-step explanation:

For this case we want to test the claim that mean GPA of night students is larger than 3.1 at the .10 significance level. The claim needs to be on the alternative hypothesis so then we have the following system of hypothesis:

H 0 : μ = 3.1    H 1 : μ > 3.1

And this test is defined a a right tailed test since the symbol for the alternative hypothesis H1 is >.

We have the following info given:

\bar X = 3.13 , s =0.03 , n =75

The statistic to check the hypothesis is given by:

t = \frac{\bar X -\mu}{\frac{s}{\sqrt{n}}}

Replacing the info given we got:

t = \frac{3.13-3.1}{\frac{0.03}{\sqrt{75}}}= 8.66

The degrees of freedom are given by:

df = n-1=75-1 =74

The p value since is a right tailed ted is given by:

p_v = P(t_{74} >8.66) =3.65x10^{-13}

The significance level is 0.1 or 10%

And since the p value is very low compared to the significance level we have enough evidence to:

Reject the null hypothesis

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3 years ago
5. Artie uses 1 1/3 yards of rope to make the bottom of his hammock stronger He uses 10 inches of rope to strengthen some areas
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The correct answer is C 11/8 and 48 inches
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1 large box is 18 sticks of clay how many does 55 large box equal
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It is equal to 825 sticks total
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