Need help 8th grade math

2 answers:

8 0

Answer:

Step-by-step explanation: try to get x in one side and the whole number to another side to get x= blank

5 0

Answer:

x=0

Step-by-step explanation:

1. add +5 to both sides

2. rewrite equation as 13+x=13

3. subtract -13 to both sides

4. Since they both cancel out again, you're left with 0.

5. x=0

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dlinn [17]

Answer:

the answer is 10 you round up a nine it keeps going to the end

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3 years ago

inysia [295]

Answer:

B. There is sufficient evidence that the mean of the pressure required to open a certain valve has changed.

Step-by-step explanation:

We make this conclusion based on these reasons:

We are told that the "null hypothesis was rejected" after the "manager feels that the pressure variability has changed., meaning the null hypothesis was the opposite of what occurred; that is to say, it is the alternate hypothesis that proved true instead.
"changes in the manufacturing process" form what can be called "sufficient evidence" that the mean of the pressure required to open the valve has changed, thereby going against the null hypothesis.

It is based on the above reasons that the null hypothesis was rejected.

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3 years ago

Anvisha [2.4K]

Answer:

not

Step-by-step explanation:

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Dennis_Churaev [7]