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Yuliya22 [10]
3 years ago
15

Calcula las siguientes potencias

Mathematics
1 answer:
Likurg_2 [28]3 years ago
7 0

<span>A) -27 B) -256, x - 32 C) 1/9
</span><span>espero que esto ayude</span>
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In angle PQR, angleQ=70 angle R=45 then angleP=.....<br>​
NemiM [27]

Answer:

65

Step-by-step explanation:

Because its a triangle,

P + Q + R = 180

So,

P + 70 + 45 = 180

P + 115 = 180

Subtract 115 on both sides

P = 65

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3 years ago
How to solve 4 (n) -n + D = 36
andreyandreev [35.5K]

Step-by-step explanation:

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3 years ago
Geometry; A circle has 360 degrees. If the circle is divided in half, how many degrees does each half measure
sertanlavr [38]

Answer:180

Step-by-step explanation:

8 0
4 years ago
A researcher was interested in comparing the resting pulse rates of people who exercise regularly and people who do not exercise
DiKsa [7]

Answer:

We Reject H₀ if t calculated > t tabulated

But in this case,

0.83 is not greater than 2.056

Therefore, we failed to reject H₀

There is no difference between the mean pulse rate of people who do not exercise and the mean pulse rate of people who do exercise.

Step-by-step explanation:

Refer to the attached data.

The Null and Alternate hypothesis is given by

Null hypotheses = H₀: μ₁ = μ₂

Alternate hypotheses = H₁: μ₁ ≠ μ₂

The test statistic is given by

$ t = \frac{\bar{x}_1  - \bar{x}_2}{\sqrt{\frac{s_1^2}{n_1} + \frac{s_2^2}{n_2} } }  $

Where \bar{x}_1 is the sample mean of people who do not exercise regularly.

Where \bar{x}_2 is the sample mean of people who do exercise regularly.

Where s_1 is the sample standard deviation of people who do not exercise regularly.

Where s_2 is the sample standard deviation of people who do exercise regularly.

Where n_1 is the sample size of people who do not exercise regularly.

Where n_2 is the sample size of people who do exercise regularly.

$ t = \frac{72.7  - 69.7}{\sqrt{\frac{10.9^2}{16} + \frac{8.2^2}{12} } }  $

t = 0.83

The given level of significance is

1 - 0.95 = 0.05

The degree of freedom is

df = 16 + 12 - 2 = 26

From the t-table, df = 26 and significance level 0.05,

t = 2.056 (two-tailed)

Conclusion:

We Reject H₀ if t calculated > t tabulated

But in this case,

0.83 is not greater than 2.056

Therefore, We failed to reject H₀

There is no difference between the mean pulse rate of people who do not exercise and the mean pulse rate of people who do exercise.

4 0
3 years ago
A pack of 8 smiley stickers cost $9.60. What is the unit price?
Katarina [22]

Answer:

Step-by-step explanation:

Unit price = 9.60/8 = $1.2

7 0
3 years ago
Read 2 more answers
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