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zysi [14]
3 years ago
15

(2/7)power 7 divided (2/7)power 5

Mathematics
2 answers:
lesantik [10]3 years ago
8 0

Answer:

4/49

Step-by-step explanation:

\frac{ (\frac{2}{7})^{7}  }{( \frac{2}{7} )^{5} }  = ({ \frac{2}{7} )}^{7 - 5}  \\  = ( \frac{2}{7})^{2}  \\  =  \frac{4}{49}

Harrizon [31]3 years ago
6 0

Answer:

4/49

Step-by-step explanation:

7-5 = 2

2/7*2/7 = 4/49

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Three students want to estimate the mean backpack weight of their schoolmates. To do this, they each randomly chose 8 schoolmates and weighed their backpacks. Then as per the given sample data,

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(b) Range of sample means: 0.25

(c)The true statement is: The closer the range of the sample means is to 0, the less confident they can be in their estimate.

For the first sample, mean= 6.375

For the second sample, mean= 6.375

For the third sample, mean= 6.625

Range of sample means=Maximum Mean- Minimum Mean

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The students will estimate the average backpack weight of their classmates using sample means, the true statement is:

The closer the range of the sample means is to 0, the more confident they can be in their estimate.

Learn more about range here:

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1 year ago
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tresset_1 [31]

Answer:

Step-by-step explanation:

Angles 1, 2, and 3 are supplementary (they add up to equal 180). If angles 1 and 3 are 20 each, then their sum in 40, making angle 2

180 - 40 = 140. If this central angle is 140 degrees, then the measure of the arc that it cuts off also measures 140 degrees. This is not to be confused with the arc length, which is not even remotely the same thing!

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Mrs. Deery has 6 large pieces of construction paper for an art project. She has 24 students in her class. What fraction of the p
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Answer:

Step-by-step explanation:

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Since it forms a "right triangle" we can apply trigonometry.
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Hope this helps! :)
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Write an expression meaning 4 less than 5 times a number
Rudiy27

Answer:

Expression: 5 x n - 4

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