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Contact [7]
2 years ago
11

5^-15 rewritten using a positive exponent

Mathematics
2 answers:
AveGali [126]2 years ago
5 0

Answer:

CHINA

Step-by-step explanation:

Anastasy [175]2 years ago
5 0

Answer:

\frac{1}{ {5}^{15} }

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‼️SOS<br><br> lIn the diagram above, PQR and QST are straight lines. Find the value of x + y.
OleMash [197]

\\ \sf\longmapsto x+144=180(Supplementary)

\\ \sf\longmapsto x=180-144

\\ \sf\longmapsto x=36

And

\\ \sf\longmapsto y+40=180

\\ \sf\longmapsto y=180-40

\\ \sf\longmapsto y=140

Now

\\ \sf\longmapsto x+y=140+36=176

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2 years ago
Which expression is equivalent to 18x12
serg [7]

Answer:

12x18

Step-by-step explanation:

5 0
2 years ago
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-3x + 7 = 1<br> what dose x represent
olchik [2.2K]

Answer:

the answer is x=3

Step-by-step explanation:

-3x=1-7

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3 0
3 years ago
In 2010, the average duration of long-distance telephone calls originating in one town was 9.4 minutes. A long-distance telephon
Zepler [3.9K]

<u>Answer</u>: No, we do not have sufficient evidence to conclude that the mean call duration, µ, is different from the 2010 mean of 9.4 minutes.

Step-by-step explanation:

As per given , we have

H_0: \mu=9.4\\\\H_a:\mu\neq9.4, since H_0 is two-tailed so , the test is a two tail test.

Since population standard deviation is unknown, so we use t-test.

Critical value (two-tailed) for significance level of 0.01= t_{n-1,\alpha/2}=t_{49, 0.005}\pm2.609228

For n =50 , \overline{x}=8.6 and s= 4.8

Test statistic : t=\dfrac{\overline{x}-\mu}{\dfrac{s}{\sqrt{n}}}

t=\dfrac{8.6-9.4}{\dfrac{4.8}{\sqrt{50}}}\approx-1.18

Since test statistic value (-1.18) lies in critical interval (-2.609228, 2.609228), it means the null hypothesis is failed to reject.

We do not have sufficient evidence to conclude that the mean call duration, µ, is different from the 2010 mean of 9.4 minutes.

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2 years ago
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lys-0071 [83]

Answer:

1) Matches with option 4

2) Matches with option 2

3) Matches with option 3

4) Matches with option 1

5 0
2 years ago
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