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2 years ago

HIIIIIIII HELP ASAP AND PLEASE SHOW WORK

Mathematics

2 answers:

givi [52]2 years ago

5 0

Ok, so The price for the amount of popcorn in both boxes is the same, what you want to find out is how much does box #2 cost in total. So do you know how to work with volume? You simply multiply all three slides. so 10 x 20 x 24 = 4,800. Now, since your trying to find the base amount of price per popcorn you need to divide 4,800 by $6.24, the cost of box 1 to find the price per popcorn. 6.24/4,800 = 0.0013. Now you need to find the volume of the second box. 12 x 22 x 20 = 5280. Finally, you multiply 5280 times 0.0013 to get 6.86400. C. is your answer when rounded ;) Good Luck!

lys-0071 [83]2 years ago

3 0

Volume of a rectangular prism is = L*W*H

Volume of box A is 4800cm^3

Since price is determined by volume, and the price of box A is $6.24 we need to find the price per cm^3. $6.24/4800cm^3 = $0.0013 per cm^3

Volume of box B is 5280cm^3

5280 * 0.0013 = $6.864 which is answer c

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Harrizon [31]

Answer:

(-6,0)

Step-by-step explanation:

the y-axis is any (x number, 0)

8 0

2 years ago

Forty- two people attended s meeting about a zoning ordinance. Six more of the attendees voted in favor of the ordinance than th

kumpel [21]

Let the attendees in opposition be x. This means that the attendees in favour are x+6.
That means x+x+6=42, which is 2x+6=42, so 2x=36 and x=18. Therefore, there are 18 attendees who opposed it.

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2 years ago

A laptop producing company also produces laptop batteries, and claims that the batteries

gregori [183]

Answer:

There is enough evidence to support the claim that the batteries power the laptops for significantly less than 4 hours. (P-value = 0).

The null and alternative hypothesis are:

$H_0: \mu=4\\\\H_a:\mu< 4$

Step-by-step explanation:

The question is incomplete: To test this claim a sample or population standard deviation is needed.

We will estimate that the sample standard deviation is 2 hours, and use a t-test to test that claim.

NOTE (after solving): The difference between the sample mean and the mean of the null hypothesis is big enough to reject the null hypothesis, even when we have a sample standard deviation of 3.5 hours, which can be considered bigger than the maximum standard deviation for the sample.

This is a hypothesis test for the population mean.

The claim is that the batteries power the laptops for significantly less than 4 hours.

Then, the null and alternative hypothesis are:

$H_0: \mu=4\\\\H_a:\mu< 4$

The significance level is 0.05.

The sample has a size n=500.

The sample mean is M=3.5.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=2.

The estimated standard error of the mean is computed using the formula:

$s_M=\dfrac{s}{\sqrt{n}}=\dfrac{2}{\sqrt{500}}=0.0894$

Then, we can calculate the t-statistic as:

$t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{3.5-4}{0.0894}=\dfrac{-0.5}{0.0894}=-5.5902$

The degrees of freedom for this sample size are:

$df=n-1=500-1=499$

This test is a left-tailed test, with 499 degrees of freedom and t=-5.5902, so the P-value for this test is calculated as (using a t-table):

$P-value=P(t$

As the P-value (0) is smaller than the significance level (0.05), the effect is significant.

The null hypothesis is rejected.

There is enough evidence to support the claim that the batteries power the laptops for significantly less than 4 hours.

5 0

2 years ago

A toy baseball bat comes with 3 plastic balls. The balls are in a box that is a rectangular solid. The box is just big enough to

vodomira [7]

Answer:

31.4 in³

Step-by-step explanation:

The box is just big enough to hold the 3 balls, so it must have a length 6 times the radius of each ball, a width 2 times the radius, and a height 2 times the radius.

The volume of the box is:

V = (6r)(2r)(2r)

V = 24r³

The volume of the 3 balls is:

V = 3 (4/3 π r³)

V = 4πr³

So the volume of the air is:

V = 24r³ − 4πr³

V = (24 − 4π) r³

Since r = 1.4 inches:

V = (24 − 4π) (1.4 in)³

V ≈ 31.4 in³

5 0

2 years ago

Is 432 divisible by 9 I’m looking for the estimate 432 divided by 9

Monica [59]

Answer:

Yes (432 = 9 x48).

Step-by-step explanation:

The trick you need to know is the theorem that says that if the digits in a number add up to a multiple of 9, then the number itself is divisible by 9.

So we go 4+3+2 = 9.

So as this sum of 9 is divisible by 9, it means 432 is also divisible by 9.

If you want to work out the actual answer of 432 divided by 9, you can estimate it by doing 450 ÷ 9 = 50. Then see that 432 is 18 less than 450. And 18 = 2x9. So the answer to the division is 50-2 = 48.

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2 years ago