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3 years ago

The numbers x, y, z and w have an average equal to 25. The average of

Mathematics

1 answer:

murzikaleks [220]3 years ago

8 0

Answer:

look at the picture i sent

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A number to the 8th power divided by the same number to the 5th power equals 27. What is the number?

Yuliya22 [10]

x^8/x^5=27

x=3 when you flip the equation (rounded number)

7 0

3 years ago

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What number is in between 375 and 400?

Georgia [21]

376,377,378,379,380,381,382,383,384,385,386,387,388,389,390,391,392,393,394,395,396,397,398,399,400
just kidding its 396.5
hope this helped

7 0

3 years ago

Using the same coin, flip it a new twenty times and record your results. What is the experimental probability of flipping a head

babunello [35]

Answer:

50%

Step-by-step explanation:

No matter how many times you flip a coin, there is always a 50% probability that you will flip heads because there are only two outcomes.

3 0

3 years ago

How to solve this problem?

valentinak56 [21]

Very nice handwriting but the math and English are confusing.

Let's assume we're told

$\displaystyle 45 = \sum_{i=1}^9 (x_i - 10)^2$

The subscript is important.

I think we're told the similar sum with 11 gives the smallest possible value for the sum. This is a rather cagey way of telling us 11 is the mean of the nine points. The mean is the number which minimizes the sum of squared deviations.

$\displaystyle 45 = \sum_{i=1}^9 (x_i - 10)^2 = \sum x_i^2 - 20 \sum x_i + 9(100)$

$\displaystyle \sum x_i^2= 20 \sum x_i - 900$

If 11 is the mean, the sum of the points is 9(11)=99.

$\displaystyle \sum x_i^2= 20 (99) - 900 = 1080$

Answer: 1080

6 0

3 years ago

530÷34= ? Write answer as a whole number and remainder.

MArishka [77]

Answer:

15 with a remainder of 20

Step-by-step explanation:

hope it helps :)

4 0

3 years ago

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