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Zinaida [17]
2 years ago
13

What is the answer ​

Mathematics
1 answer:
Tema [17]2 years ago
4 0

Answer:

My wet but, you scaliwag

Step-by-step explanation:

it simple and easy

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Q7.
VLD [36.1K]

Answer:

10

Step-by-step explanation:

Let c = sum of ages of all children.

mean age of all children = c/15 = 7

c = 15 * 7 = 105

The sum of the ages of all children is 105.

Let b = sum of ages of the 9 boys.

mean age of boys = b/9 = 5

b = 9 * 5 = 45

The sum of the ages of the boys is 45.

The sum of the ages of the girls is c - b.

c - b = 105 - 45 = 60

The number of girls is 15 - 9 = 6

mean age of girls = (sum of ages of the girls)/(number of girls) =

= 60/6 = 10

3 0
3 years ago
Is the following a rational or irrational number:<br><br> 0.7077077707777…
HACTEHA [7]

Answer:it following number is irrational

Step-by-step explanation:

8 0
3 years ago
Segments DF, DH, and GF are tangent to the circle. Andrew was asked to find DF. Explain andrew's error.
ANEK [815]

Answer:

DF = 14

Step-by-step explanation:

Andrew was wrong in the assumption that DE = EF

Segments of tangents to a circle from the same external point are congruent

That is

EF = FG = 8

Then

DF = DE + EF = 6 + 8 = 14

5 0
3 years ago
Factor completely. n^2 + 7n - 44
4vir4ik [10]
(n+11)(n-4) is your answer
4 0
3 years ago
Read 2 more answers
- The width of a swimming pool is one third of its length. The width of the pool is 15 feet. What is the length of the
disa [49]

Answer: 45ft.

Step-by-step explanation:

Let assigned the value of x to the unknown lenght.

Therefore, the Length = xft

The with is 1/3 of the length and this. = 15ft.

Now , to get the length, we equate both together and then solve for x .

1/3 of x = 15

x/3 = 15

To get x, we multiply both side by 3

x = 45ft

The of the pool = 45ft.

7 0
3 years ago
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