2 years ago

90 out of 120 students in your grade are girls at your school. What percentage are boys?

Mathematics

1 answer:

sesenic [268]2 years ago

7 0

30% Bc there are 30 boys and 90 girls or it’s 10% boys

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The probability distribution for a random variable x is given in the table X: -5,-3,-2,0,2,3 Probability: .17,.13,.33,.16,.11,.1

Ivan

Answer:

0.6 probability that $-2 \leq x \leq 2$

Step-by-step explanation:

The probability distribution is given in the table.

Probability that x is between -2 and 2.

Between -2 and 2, inclusive, we have -2, 0 and 2. So

$P(-2 \leq x \leq 2) = P(X = -2) + P(X = 0) + P(X = 2)$

From the table:

$P(X = -2) = 0.33, P(X = 0) = 0.16, P(X = 2) = 0.11$ . So

$P(-2 \leq x \leq 2) = P(X = -2) + P(X = 0) + P(X = 2) = 0.33 + 0.16 + 0.11 = 0.60$

0.6 probability that $-2 \leq x \leq 2$

4 0

2 years ago

Can someone explain this for me??<br> 4 (c+2) < 4c + 10

faust18 [17]

Answer:

The inequality would be true

Step-by-step explanation:

4(c+2) < 4c + 10

Distribute the 4 on the left

4c + 8 < 4c + 10

Subtract 4c from both sides

8 < 10

8 < 10 is true

7 0

2 years ago

When 18 is added to 6 times a certain number the result is 168. what is the number

Vlad1618 [11]

18+6x?= 168
try taking away the 18 and 6 then dividing it

3 0

3 years ago

Read 2 more answers

Plz help me with this question I don't understand it!!

Sav [38]

9t-7t-t^2
2t-t^2

Hope this helps :)

3 0

2 years ago

What is x? 6(x+4)+3x-2

valina [46]

That is impossible to answer because this is an expression. you can only solve for x in equations

6 0

1 year ago