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Leni [432]
3 years ago
7

i need answers by tonight or the morning. its due tomarrow and im scarred to ask the teacher what to do.

Mathematics
1 answer:
kompoz [17]3 years ago
4 0
I’ll explain part A and you can apply it to the other parts. The functions f(x), g(x), and m(x) are all equivalent to the given polynomials. So when it asks for f(x) + [g(x) - m(x)] you plug them in. The answer to Part A is 3x^2 +5x - z + [5x^2-3x+z - 2x^2 - 2x]. Combine the like terms (3x^2+5x^2-2x^2 = 6x^2 (because 3+5-2=6)) and so on until you’ve simplified it as much as possible!
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Zarrin [17]

Answer:

The p-value for this hypothesis test is P=0.015.

Step-by-step explanation:

In this case we have hypothesis test for the mean, with standard deviation of the population unknown.

The null hypothesis we want to test is

H_0: \mu\leq80

To work with this test we have a sample of size n=20, sample mean=91 and sample standard deviation=21.

First, we estimate the standard deviation of the population

s_M=s/\sqrt{n}=21/\sqrt{20}=4.696

Then, because we have an estimated standard deviation, we have to calculate the statistics t.

t=\frac{M-\mu}{s_M}=\frac{91-80}{4.696}  =2.342

We can look up this value of t in a t-table to know the probability of this value, taking into account 19 degrees of freedom:

df=n-1=20-1=19

The p-value or the probability of P(t>2.342) is 0.01511.

This value P=0.0151 is compared to the significance level (0.05). Since the probability value (0.0151) is less than the significance level (0.05) the effect is statistically significant. Since the effect is significant, the null hypothesis is rejected.

3 0
4 years ago
betty tammy and laura went picking apples. betty picked 13 apples, tammy picked 9 apples and laura picked 19 they combined their
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Answer:

41 apples

Step-by-step explanation:

13 apples + 9 apples + 19 apples

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Answer:

D) 24 in3

Step-by-step explanation:

Volume of a box is length times width times height

2 in x 4 in x 3 in = 24

and its inches cubed because inches is multiplied 3 times

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4 years ago
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None of these are accurate. Are you sure you’re including the entire question?
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Your answer would be D, The translation doesn't change the size or shape. Just location.

Hope this helped.

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