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Lyrx [107]
3 years ago
14

Why are you allowed to move the decimal points before

Mathematics
1 answer:
Anna [14]3 years ago
6 0

Answer:

If you move the decimal point the same number of places in the dividend and the divisor, you are multiplying them both by the same power of 10. That does not change the quotient

Step-by-step explanation:

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Tell whether x and y show direct variation. Explain your reasoning. y−x=0
Jlenok [28]

Answer:

yes

Step-by-step explanation:

Direct variation is represented as

y = kx, where k is a constant.  

We can rewrite y - x = 0 as

    y = x   (add x to both sides)

This can be looked at as

  y = (1)x     , so this is a direct variation relationship where k = 1

7 0
3 years ago
Find the volume of a cylinder whose base has a diameter of 10 and whose height is 12. Use 3.14 for pi and round your answer to t
KengaRu [80]
The first answer is 942
3 0
3 years ago
Researchers want to determine whether or not there is a difference in systolic blood pressure based on how many hours a person e
VARVARA [1.3K]

Answer:

(1) The between groups degrees of freedom is 2.

(2) TRUE.

(3) The correct option is (a).

Step-by-step explanation:

(1)

The between groups degrees of freedom for the study is:

\text{df}_{B}=k-1\\=3-1\\=2

Thus, the between groups degrees of freedom is 2.

(2)

The hypothesis for he one-way ANOVA is:

<em>H</em>₀: All the means are equal.

<em>Hₐ</em>: At least one of the mean is not equal.

The output of the ANOVA test is attached below.

The <em>p</em>-value of the test is 0.00005.

<em>p</em>-value = 0.00005 < <em>α</em> = 0.05

Thus, the result is statistically significant.

The statement is TRUE.

(3)

As the <em>p</em>-value of the test is less than the significance level, the researcher should make the decision to reject the null hypothesis.

The correct option is (a).

6 0
3 years ago
Solve the equation x to the 3 power = -215
mojhsa [17]

Answer:

cube root of -215 or -5.9

Step-by-step explanation:

Since this can't be a perfect cube the answer would be cube root of -215 or you find the closest perfect cubes which would be -5 and -6

-5cubed is -125 and -6cubed is -216  and -215 is closer to -216 the number approximately would be -5.9

Hope this helps :)

5 0
3 years ago
What is the number form ,expanded form and the work form of the number 1157
SashulF [63]
1000+100+50+7 is the expanded form
6 0
3 years ago
Read 2 more answers
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