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2 years ago

7

The surface area of the right square prism is 220 cm2. What is the volume of the prism, in cubic centimeters? Show your work. Th

e side is 5cm

1 answer:

mote1985 [20]2 years ago

8 0

Hiuhgjjhhhhh the Swenson 79 is Buffalo

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Elena wants to make a scale drawing of her bedroom. Her bedroom is a rectangle with length 5 m and width 3 m. She decides on a s

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I can’t do the calculations right now but divide the door by 50, and multiple the numbers for the bed by 50

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3 years ago

Suppose the weights of seventh‑graders at a certain school vary according to a Normal distribution, with a mean of 100 pounds an

alex41 [277]

Answer:

We conclude that there is no change in the average weight since the implementation of a new breakfast and lunch program at the school.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 100 pounds

Sample mean, $\bar{x}$ = 98 pounds

Sample size, n = 35

Alpha, α = 0.05

Population standard deviation, σ = 7.5 pounds

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 100\text{ pounds}\\H_A: \mu < 100\text{ pounds}$

We use one-tailed(left) z test to perform this hypothesis.

Formula:

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

Putting all the values, we have

$z_{stat} = \displaystyle\frac{98 - 100}{\frac{7.5}{\sqrt{35}} } = -1.577$

Now, $z_{critical} \text{ at 0.05 level of significance } = -1.64$

We calculate the p-value with the help of standard normal table.

P-value = 0.057398

Since the p-value is greater than the significance level, we fail to reject the null hypothesis and accept is.

We conclude that there is no change in the average weight since the implementation of a new breakfast and lunch program at the school.

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3 years ago

Math is so hard sorry how do I do this

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For the equation section:

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For the inequality equation:

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3 years ago

What is 5.264 rounded to the nearest hundredth

yKpoI14uk [10]

<em>If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up (+1).</em>

<em>If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down (no change).</em>

5.26<u>4</u> ≈ 5.260 = 5.26

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2 years ago

Can some please help me with this questions

Free_Kalibri [48]

9514 1404 393

Answer:

y = 100,000(1 + 0.15)^t
y = 1200(1 -0.06)^t
y = 49.50(1 -0.07)^t
y = 135(1 +0.05)^t
value of $200 decreases (decays) by 25% each year

Step-by-step explanation:

It should be no stretch to understand that "increases" means the function is a growth function (+ sign), and "decreases" means the function is a decay function (- sign).

The multiplier in front (a) is the initial value — the value when t=0.

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2 years ago