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Licemer1 [7]
4 years ago
5

The mean of five numbers is 10. four of the numbers are 4, 6 , 7 and 13. What is the fifth number?

Mathematics
2 answers:
mrs_skeptik [129]4 years ago
8 0
The answer is twenty
faltersainse [42]4 years ago
3 0

Answer:

Step-by-step explanation:

mean=10

mean=\frac{a+b+c+d+e}{5}

∴10=\frac{4+6+7+13+e}{5}

∴50=30+e

∴e=50-30

∴e=20

∴the fifth number is 20

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Please help fast<br>it's for a quiz​
horsena [70]

Answer:

B

Step-by-step explanation:

5 pi > 15

\pi = 3.14

5 * 3.14 > 15

15.7 > 15

6 0
3 years ago
Ms. Dunn spent 10.70 buying slices of pie and cookies. She bought a total of 24 items. A slice of pie costs 0.80 and a cookie co
Rus_ich [418]

Answer:

Ms. Dunn bought 7 slices of pie.

Step-by-step explanation:

With the information provided, you can write the following equations:

x+y=24 (1)

0.80x+0.30y=10.70 (2), where:

x is the number of slices of pie

y is the number of cookies

First, you can solve for x in (1):

x=24-y (3)

Next, you have to replace (3) in (2) and solve for y:

0.80(24-y)+0.30y=10.70

19.2-0.80y+0.30y=10.70

19.2-10.70=080y-0.30y

8.5=0.5y

y=8.5/0.5

y=17

Finally, you can replace the value of y in (3) to be able to find the value of x:

x=24-17

x=7

According to this, the answer is that Ms. Dunn bought 7 slices of pie.

7 0
3 years ago
What is a rational number
dsp73
Anything except pi is a rational number. So 9 and 7/10 is one or it could be a whole number
7 0
4 years ago
What number would this be?
kobusy [5.1K]

Answer:

Approximately 775,000.

Step-by-step explanation:

The number is almost in between 750,000 and 800,000. The number in the middle of these two is 775,000.

4 0
4 years ago
Read 2 more answers
suppose a weather app says that the probability of rain today is 30%. What is the complement of the event ""rain today"" what is
ValentinkaMS [17]

Answer:

The complement event would be: "No rain today"

Its probability would be 70%

Step-by-step explanation:

Given the event:

A= rain today

The probability of rain today is 30%

P(A)=30%=0.3

The complement event has all the values that are not included in the event.

The complement event would be:

A'= No rain today

The probability of a event is the subtraction between 1 and the complement event:

P(A')=1-P(A)

Then, the probability of the event "No rain today" will be:

P(A')=1-0.3=0.7=70%

4 0
4 years ago
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