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4 years ago

Calculate the average (arithmetic mean) of the list of numbers shown in the table. (rounded to the nearest tenth)

Mathematics

2 answers:

Nata [24]4 years ago

8 0

Answer:

250.9

Step-by-step explanation:

Find mean by adding all the terms and dividing by the number of terms.

173+299+181+103+540+81+270+360=2007

We divide by 8 since we are adding 8 different numbers.

2007/8 =250.875

We round this number. We want to round the 250.875 depending on the number that follow the 8. The number after 8 is 7, 250.875. Since seven is above five, the 8 will increase to a 9. So we have:

250.9

oksian1 [2.3K]4 years ago

6 0

D) 286.7 because the number is rounded to your nearest tenth

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Find X when x equals negative 15

Ann [662]

Judging by the question you have provided I came to the conclusion that you have already solved your own problem!

If the goal is to find X when X=-15 then your answer for X should be -15!

If this is not the entire equation please post the entire one!

Hope this helped!
-Blake

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3 years ago

(7x-y=7<br>(x+2y=6 estimate the solution to the system of equations

jolli1 [7]

Multiply the first equation by 2 to then use elimination by adding the 2 equations.

So, 14x-2y=14

+. x+2y=6

Equals 15x=20 so x=20/15=4/3

Plug in to first equation to get y

7(4/3)-y=7

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28/3-y=21/3

So y=7/3

Plug both x and y into second equation to check

4/3+2(7/3)=

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So x=4/3, y=7/3

Hope this helps! Have a blessed day!

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4 years ago

Equation of a line that goes through point (4,2) and perpendicular to -x+y=1

mojhsa [17]

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3 years ago

Read 2 more answers

Prove algebraically that 0.5 recurring = 5/9

weeeeeb [17]

Answer:

see explanation

Step-by-step explanation:

We require 2 equations with the recurring part after the decimal point.

Let x = 0.555..... → (1)

Multiply both sides by 10, then

10x = 5.555..... → (2)

Subtract (1) from (2) thus eliminating the recurring decimal

(10x - x) = (5.5555 - 0.5555 ), that is

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x = $\frac{5}{9}$

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amm1812

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