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3 years ago

Who cant help me with 1-6 ‍♀️♥️

Mathematics

1 answer:

GarryVolchara [31]3 years ago

5 0

1)80
2)55
3)D
4)F
5)-20
6)B
Hope that helps

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Solve the equation. -7 = -1 + x/3

pochemuha

Answer:

x= -18

Step-by-step explanation:

We want to isolate x ( move everything to the other side of the equation)

-7 = -1 + x/3

-6 = x/3

x= 3*-6

x= -18

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4 years ago

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QUESTION 2 Simplify the following a5×a7

Kryger [21]

Answer:

$a^{12}$

Step-by-step explanation:

Identity Used : $a^x \times a^y = a^{x+ y}$

$a^5 \times a^7 = a^{5 + 7} = a^{12}$

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3 years ago

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The polynomial 16x + 2 is a what

Nadusha1986 [10]

The answer is 8（x+1）。。。。。。

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3 years ago

I WILL GIVE BRAINLIEST!!!

zimovet [89]

Not equivalent to any of the given expressions.

Step-by-step explanation:

${7}^{2m} . {6}^{2m} \\ \\ = (7.6) ^{2m} \\ \\ = {42}^{2m}$

Hence, ${42}^{2m}$ is not equivalent to any of the given expressions.

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3 years ago

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The mean annual tuition and fees for a sample of 12 private colleges was 36,800 with a standard deviation of 5,000 . A dotplot s

Ilya [14]

Answer:

The value of the test statistic and degrees of freedom is 2.148 and 11 respectively.

Step-by-step explanation:

Consider the provided information.

The mean annual tuition and fees for a sample of 12 private colleges was 36,800 with a standard deviation of 5,000 .

Thus, n = 12, $\bar x=36800$ σ = 5000

degrees of freedom = n-1 = 12-1 = 11

$H_0: \mu = 33700\ and\ H_a: \mu \neq 33700$

Formula to find the value of z is: $z=\frac{\bar x-\mu}{\frac{\sigma}{\sqrt{n}}}$

Where $\bar x$ is mean of sample, μ is the mean of population, σ is the standard deviation of population and n is number of observations.

$z=\frac{36800-33700}{\frac{5000}{\sqrt{12}}}$

$z=2.148$

Hence, the value of the test statistic and degrees of freedom is 2.148 and 11 respectively.

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3 years ago