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3 years ago

Ayo if anyone knows this

Mathematics

1 answer:

sergij07 [2.7K]3 years ago

4 0

Answer:

x = 26

Step-by-step explanation:

x = (√17² - 15²) x 2 + 10

x = (√64) x2 + 10

x = 8 x 2 + 10 =26

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Keisha is helping plan a race route for a 10-kilometer charity run. The committee wants to set up the following things along the

Semenov [28]

Yes, there will be a total of 6 distance markers that are placed at the same location as one of the other items. At 25% through the race there will be a water station and distance marker. At 40% through the race there will be another water station and distance marker. At 50% there will be a viewing station and two distance markers. At 60% there will be a water station and a distance marker. At 80%, another water station and distance marker. And finally, at 100% through the race there will be a water station, viewing station and two distance markers.

7 0

4 years ago

Help Fast!!!!!!

elixir [45]

The formula for the area of a circle is A = πr^2

Since we know the length of the square is 7cm and the circle fills the full length, 7cm is the diameter.

To get the radius you divide the diameter by 2.

7/2 = 3.5

So, your radius is 3.5.

Now your formula looks like this: A = π(3.5)^2

Next you would square 3.5 because (3.5)^2 means to multiply 3.5 by 3.5

3.5^2 = 12.25

Now, you just multiply 12.25 by the approximate version of pi, which is 3.14.

12.25*3.14 = 38.465

Now, that you have the area of the circle, you subtract it from the area of the square.

If you already haven't figured out the area of the square it is 49 cm.

This is because the formula for the area of a square is A = bh or A = lw

Since the length (l) or base (b) is 7, we know that the other sides are 7 because squares have equal sides.

So now we subtract 38.465 from 49 and we get 10.535 which rounds to 10.54

So, your final answer is D. 10.54 cm^2

Hope this helps!

3 0

3 years ago

Describe the proportion method for solving a percentage problem:

kvasek [131]

EXPLANATION 

First you will need TWO numbers. One being the percentage and the other being the number your trying to find the percent out of.

EXAMPLE

Imagine you have 130 crayons. Out of the 130 crayons you found that 15% of them were broken.

First you want too take the 15% and put it over 100, because a percentage always goes over 100. Now that you have the 15/100 you now wanna take the 130 crayons and put the variable X over it. Now that you have the fractions 15/100 and X/130 you want to cross multiply them to get 100x and 1950. For the final step your going to want to take 1950 and divide it by 100 to get your answer, 19.5.

I hope this helped you find out the method for solving a percentage problem while using proportions.

8 0

3 years ago

Fine the lower and upper quartiles and interquetile range.

Gnom [1K]

Answer:

Lower Quartile = 25.5

Upper Quartile = 61.5

IQR = 36

Step-by-step explanation:

Given data is:

5, 12, 17, 23, 28, 31, 37, 41, 42, 49, 54, 58, 65, 68, 73, 71

The lower quartile is the first quartile and upper quartile is the third quartile.

A median divides the data set in two equal halves.

Lower quartile also known as first quartile is the middle value in the first half.

The first half is:

5, 12, 17, 23, 28, 31, 37, 41

As the number of values is even, the quartile will be the average of two middle values

$Q_1 = \frac{23+28}{2} =\frac{51}{2}= 25.5$

Upper quartile is the average of middle two values in the second half when the number of values is even.

42, 49, 54, 58, 65, 68, 73, 71

$Q_3 = \frac{58+65}{2} = \frac{123}{2} = 61.5$

Interquartile range is the difference of third quartile and first quartile

$IQR = Q_3 - Q_1 = 61.5-25.5=36$

Hence,

Lower Quartile = 25.5

Upper Quartile = 61.5

IQR = 36

7 0

3 years ago

Which completes the syllogism? All quadrilaterals have four sides. All squares are quadrilaterals. Therefore, ________________

Viefleur [7K]

The answer is B. all squares have four sides

7 0

3 years ago

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