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vova2212 [387]
3 years ago
15

Best answer gets brainliest!​

Mathematics
1 answer:
S_A_V [24]3 years ago
7 0

Answer:

Step-by-step explanation: Before we start, we want to find out the volume of a cone. Since we know it's v = \pi r^2\frac{h}{3}

Plugging in the numbers and solving, we get: v = 404.48

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3x^4y^2+15x^3y^3 factor please
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3 years ago
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Find the area of a cube.<br><br> 5in, 5in, 5 in
Verizon [17]

Answer:

150in²

Step-by-step explanation:

The surface area of a cube is given by the following equation where <em>s</em> is the length of a side:

A=6s^2

So, in this case, s is equal to 5:

A = 6(5)^2 = 6(25)=150in^2

6 0
3 years ago
Which ordered pairs in the form (x, y) are solutions to the equation 7x−5y=28 ? Select each correct answer. <br>(7, 9) <br>(−1, 
dsp73
Trere are two correct answers.That are (-1,-7) and (-6,-14)
5 0
3 years ago
A manufacturer of running shoes knows that the average lifetime for a particular model of shoes is 15 months. Someone in the res
Alexus [3.1K]

Answer:

Step-by-step explanation:

Hello!

So you have a new type of shoe that lasts presumably longer than the ones that are on the market. So your study variable is:

X: "Lifetime of one shoe pair of the new model"

Applying CLT:

X[bar]≈N(μ;σ²/n)

Known values:

n= 30 shoe pairs

x[bar]: 17 months

S= 5.5 months

Since you have to prove whether the new shoes last more or less than the old ones your statistical hypothesis are:

H₀:μ=15

H₁:μ≠15

The significance level for the test is given: α: 0.05

Your critical region will be two-tailed:

Z_{\alpha /2} = Z_{0.025}= -1.96

Z_{1-\alpha /2} = Z_{0.975}= 1.96

So you'll reject the null Hypothesis if your calculated value is ≤-1.96 or if it is ≥1.96

Now you calculate your observed Z-value

Z=<u>x[bar]-μ</u> ⇒ Z=<u>    17-15     </u> = 1.99

     σ/√n              5.5/√30

Since this value is greater than the right critical value, i.e. Zobs(1.99)>1.96 you reject the null Hypothesis. So the average durability of the new shoe model is different than 15 months.

I hope you have a SUPER day!

5 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%5Chuge%5Ccolorbox%7Blightblue%7D%7Bwhat%20%5C%3A%20is%20%5C%3A%20multiverse%20%3F%7D%20" i
almond37 [142]

Answer:

HOPE THIS IS WHAT YOU ARD LOOK FOR

3 0
3 years ago
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