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elena-14-01-66 [18.8K]
3 years ago
7

What is the x value for 21x+7y=42

Mathematics
2 answers:
xz_007 [3.2K]3 years ago
6 0

Step-by-step explanation: The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable, but we can work out its value if we try!

Andreyy893 years ago
5 0
The value of X is 1.66 repeated ?
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For the following hypothesis test, determine the null and alternative hypotheses. Also, classify the hypothesis test as two-tail
bagirrra123 [75]

Answer:

Option B:

H_0: \mu = 22.1

H_a: \mu \neq 22.1

Classification:

The hypothesis test is Two-tailed.

Step-by-step explanation:

The mean length of imprisonment for motor-vehicle theft offenders in this country is 22.1 months.

This means that the null hypothesis is that the mean is of 22.1 months, that is:

H_0: \mu = 22.1

A hypothesis test is to be performed to determine whether the mean length of imprisonment for motor-vehicle theft offenders in this city differs from the national mean of 22.1 months.

At the alternate hypothesis, we test if this mean is different of 22.1, that is:

H_a: \mu \neq 22.1

Which means that the answer is given by option b).

Which of the following is the correct classification of the hypothesis test?

We test if the mean is different from a value, which means that the hypothesis test is Two-tailed.

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3 years ago
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aleksandr82 [10.1K]

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3 years ago
What is first coordinite
finlep [7]

Answer:

with the information you have given, the first coordinate is this:

Step-by-step explanation:

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~Ren

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3 years ago
-6² - 28 ÷ 4 + (-9)
Eduardwww [97]
-6²-28÷4+(-9) is -52.
7 0
4 years ago
Read 2 more answers
How do you do this and show me the scratch work on how you got it.
labwork [276]

Answer:

Well I answered it

Step-by-step explanation:

So first thing you are going to do is add, so we are going to use PEMDAS

add the 5+4 and you get 9 then we're going to take that 7 and add the 9 and 7 so that gives us 16 now the 11² so that means we are doing 11 two times i think so then 11 times 2 is 22 take that 16 and subtract so 22 take away 16 is 5 now idk what to do with the (4) and (3) at the bottom i hope this helped and i think this is what you have to do if not please tell me what grade this is so i know

7 0
3 years ago
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