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bulgar [2K]
3 years ago
5

A sphere has a radius of 15 m. If the radius is divided by 5, what is the effect on the surface area?

Mathematics
1 answer:
Romashka [77]3 years ago
5 0
The surface area is multiplied by 5.
The surface area is divided by 5.
The surface area is divided by 25.
The surface area is multiplied by 25.
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3 years ago
8. Solve X=Students &amp; Y=Teachers<br> X+Y=24<br> X=3Y
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Step-by-step explanation:

if x+y=24

x= 24- y

in second case

x= 3y

24_ y = 3y

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hence x = 24 _6 = 18

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3.7 (negative 83 x minus 3) = 3.7 (7 x minus 30)
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3 years ago
A study was conducted to determine whether magnets were effective in treating pain. The values represent measurements of pain us
gregori [183]

Answer and Step-by-step explanation: The null and alternative hypothesis for this test are:

H_{0}: s_{1}^{2} = s_{2}^{2}

H_{a}: s_{1}^{2} > s_{2}^{2}

To test it, use F-test statistics and compare variances of each treatment.

Calculate F-value:

F=\frac{s^{2}_{1}}{s^{2}_{2}}

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And a significance level: α = 0.05

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3 years ago
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olganol [36]

Answer:

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so you want to start by using y=mx+b

step one: find the slope (remember m is the slope in this)

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m= \frac{5+3}{0-6}

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step two: insert the value we found for m into the equation and take one of the given points and insert the x and y into the equation (im using (0,5)) and solve for b.

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step three: rewrite y=mx+b with the values we found for m and for b

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3 years ago
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