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vfiekz [6]
3 years ago
15

There are 90 people in the lunchroom. If there are 9 times as many students as teachers, how many students are in the lunchroom?

Mathematics
1 answer:
uranmaximum [27]3 years ago
5 0

Answer:

there are 80 students

Step-by-step explanation:

you divide 9 by 90 to find how many teachers there are, then subtract it by 90

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There are 6 orange marbles, 2 red marbles, 3 white marbles, and 4 green marbles in a bag. Once a marble is drawn, it IS replaced
professor190 [17]

The probability of selecting two orange marbles with replacement is 36/169.

Data;

  • Orange= 6
  • Red = 2
  • Green = 4

<h3>Probability with replacement</h3>

Since after each draw, the orange marble is replaced.

The total number of marbles in the bag is

6+3+4 = 13

And the number of orange marbles is 6.

For the first selection, the probability of selecting one orange is

P = \frac{6}{13}

After drawn and replaced, the probability of selecting another marble is

P = \frac{6}{13}

And the probability of selecting two orange marbles with replacement is

P = \frac{6}{13} * \frac{6}{13} = \frac{36}{169}

The probability of selecting two orange marbles with replacement is 36/169.

Learn more on probability here;

brainly.com/question/24756209

4 0
2 years ago
How many times is the image reflected in a 6-sided snowflake?
muminat
A six sided snowflake is reflected about the orgin 4 times 
4 0
3 years ago
What is the prime factorization of 58
Pepsi [2]
The prime factorisation for 58 is 2 x 29

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5 0
3 years ago
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Simplify expression (-9)
Anarel [89]

Answer:

-9

Step-by-step explanation:

5 0
3 years ago
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Can someone help me? I know that t=20 I just don't know how to get there
Aneli [31]
2t/5=8t/20    (both numbers multiplied by 4)

t/4=5t/20    (both numbers multiplied by 5)

3=60/20

⇒ 8t/20 - 5t/20= 60/20

3t/20=60/20

⇒3t=60

t=60:3

t=20

I hope you understand !
7 0
4 years ago
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