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3 years ago

7

There are 12 boys and 14 girls in a class. One of the students is selected at random to represent the class at student council.

What is the probability that the student selected is a girl?

1 answer:

Tema [17]3 years ago

8 0

Answer:

Step-by-step explanation:

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Determine the sum of the arithmetic series: 5+18 +31 +44 + ... 161.

Finger [1]

Answer:

1079

Step-by-step explanation:

Hello,

18-5 = 13

31-18=13

44-31=13

161=5+13*12

So we need to compute

$\displaystyle \sum_{k=0}^{k=12} \ {(5+13k)}\\\\=\sum_{k=0}^{k=12} \ {(5)} + 13\sum_{k=1}^{k=12} \ {(k)}\\\\=13*5+13*\dfrac{12*13}{2}\\\\=65+13*13*6\\\\=65+1014\\\\=1079$

Thanks

3 0

2 years ago

Which describes how to find the solution to 3p < 14?

Sever21 [200]

Answer:

A. divide both sides by 3

Step-by-step explanation:

3p < 14

We want to isolate p, so we divide both sides by 3

3p/3 < 14/3

p <14/3

7 0

2 years ago

Which country like<br> ghana

vaieri [72.5K]

Answer:

Ghana is a very beautiful country even in the history, Ghana's empire was a very legendary in Africa. There are many countries like Ghana in Africa like Benin, Sierra Leone, Mali, Songhai, Zimbabwe and Togo also Ivory Coast and Niger

5 0

2 years ago

A right circular cylinder has a height of 5in. And a base area of 20 in2. What is the volume of the cylinder

koban [17]

Answer:

V=100in³

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

A bag of marbles has 5 red, 2 blue, and 3 green marbles. A marble is randomly selected. What is the probability AS A DECIMAL tha

loris [4]

Answer:

0.25 Hope this helps :)

Step-by-step explanation:

You add the 5 red and 3 green

8 Mables besides blue

so that's 2/8

simplified 1/4

1/4=0.25

8 0

2 years ago