3 years ago

The average of 7 numbers is 45.If the last two numbers are 27 and 43 what is the average of the first five

Mathematics

1 answer:

Paul [167]3 years ago

4 0

Answer:

Step-by-step explanation:

The average is calculated as

average = $\frac{sum}{count}$ Given the average of 7 numbers is 45 , then

$\frac{sum}{7}$ = 45 ( multiply both sides by 7 )

sum of 7 numbers = 315

Subtract 27, 43 from the sum to obtain the sum of first 5 numbers

315 - (27 + 43) = 315 - 70 = 245 , then

average of first 5 numbers = $\frac{245}{5}$ = 49

You might be interested in

In 1900, there was an Olympic underwater swimming event. The score was calculated by giving one point for each second the swimme

mash [69]

68.4*1= 68.4 60.2*2= 120.4 68.4+120.4= 188.8

4 0

2 years ago

Read 2 more answers

What is the distance between R(–3, 1) and S(4, 5)? Round to the nearest tenth.

Fed [463]

The answer is (-7,4)

$\binom{ - 3}{1} - \binom{4}{5} = \binom{ - 7}{4}$

good luck

3 0

3 years ago

What is the distance between the points? Round to the nearest 10th if necessary

Ulleksa [173]

Step-by-step explanation:

because

√(11)²+9²=√202=14,2

4 0

2 years ago

Which statement is true about this equation? -9(x-3)+12=-3(2x+5)-3x

Finger [1]

Answer:

Any value of "x" makes the equation true

Step-by-step explanation:

(-∞,∞)

All real numbers

i hope this work for you

8 0

2 years ago

Writing What is 20% of 70? Use pencil and paper. Write a percent problem that asks you to solve for the whole. Write a problem t

trapecia [35]

Answer:

= 14

Step-by-step explanation:

So my way of doing it is to simply put 20% in decimal so

20= 0.20

Then multiply that by 70

0.20× 70 = 14%

There are probably other ways to do it but I find this way easier

3 0

2 years ago