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Neporo4naja [7]
2 years ago
15

Please help I’ll give brainliest

Mathematics
1 answer:
ycow [4]2 years ago
8 0

Answer:

a^8

Step-by-step explanation:

When dividing exponents simply subtract the exponents and keep the base the same

So a^10 / a^2

Subtract the exponents

10-2=8

And keep the base

We would get a^8

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5.44 Teaching descriptive statistics: A study compared five different methods for teaching descriptive statistics. The five meth
maria [59]

Answer:

The null hypothesis is that all the different teaching methods have the same average test scores.

H0: μ1 = μ2 = μ3 = μ4 = μ5

The alternative hypothesis is that at least one of the teaching methods have a different mean.

Ha: at least one mean is different. (μ1 ≠ μi)

Step-by-step explanation:

The null hypothesis (H0) tries to show that no significant variation exists between variables or that a single variable is no different than its mean. While an alternative Hypothesis (Ha) attempt to prove that a new theory is true rather than the old one. That a variable is significantly different from the mean.

For the case above, let μ represent the average test scores for the teaching methods:

The null hypothesis is that all the different teaching methods have the same average test scores.

H0: μ1 = μ2 = μ3 = μ4 = μ5

The alternative hypothesis is that at least one of the teaching methods have a different mean.

Ha: at least one mean is different. (μ1 ≠ μi)

7 0
2 years ago
A plumbing company charges an initial fee of $50, plus an additional $26 per hour of service. A second company charges an initia
torisob [31]
The answer is C. You pay $128 in the third hour for both. Hope this helped
3 0
2 years ago
Se van a unir dos tramos de cadena: uno mide 0.75 m de largo y el otro 15/100 de metro . ¿Cual será la longitud total ya que est
likoan [24]

Step-by-step explanation:

It is given that,

The length of section 1 is 0.75 m and the length of section 2 is 15/100 m. The total length of the section is equal to the sum of section 1 and section 2. So, we will add them as follows :

l=0.75\ m+\dfrac{15}{100}\ m\\\\\because \dfrac{15}{100}=0.15\\\\l=0.75\ m +0.15\ m\\\\l=0.9\ m

So, the length of the section is 0.9 m or 9/10 m

8 0
3 years ago
April wants to share her peach cobbler with her mother, but she has already eaten a fourth of it. How much does she have left to
melamori03 [73]

Answer:

3/4

Step-by-step explanation:

It's three fourths, she ate one fourth.

5 0
3 years ago
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Find the x-intercepts of the following parabola. y = -4x2 + 8x + 12
Marta_Voda [28]
B. is the answer dude
3 0
3 years ago
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