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Sphinxa [80]
3 years ago
8

There are 15 boys and 12 girls in Rosemary’s class. One of the students is selected at random to be the class monitor. What is t

he probability the student selected is a girl?
A.
45

B.
59

C.
54

D.
49
Mathematics
1 answer:
Yuliya22 [10]3 years ago
6 0

Answer:

D.

Step-by-step explanation:

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find a number such that 8 times the number is 36 greater than the opposite of the number. Explain also please. ♥
lukranit [14]
Let's turn this sentence into an equation:

8n = -n + 36

Then solve:

9n = 36 => n=4
6 0
3 years ago
Read 2 more answers
Determine the factors of the expression x^2 - 9
Anuta_ua [19.1K]

Answer:

Step-by-step explanation:


The answer is B.


Use the sum-product pattern


2+3−3−9



Common factor from the two pairs


2+3−3−9x2+3x−3x−9


(+3)−3(+3)

Rewrite in factored form


(+3)−3(+3)


Solution:

(−3)(+3)

‘Hope it Helps!

5 0
2 years ago
A baseball pitcher won 80% of the games he pitched. If he pitched 35 ballgames, how many games did he win?
Marina CMI [18]

Answer:

The answer is 28%

Step-by-step explanation:

You multiply them.

7 0
3 years ago
Read 2 more answers
Suppose that the probability that a person books an airline ticket using an online travel website is 0.72. Consider a sample of
ExtremeBDS [4]

Answer:

0.183

Step-by-step explanation:

This is a question on Binomial Probability

Formula =nCx × p^x × q^n - x

p = 0.72

q = 1 - p

= 1 - 0.72

= 0.28

x = number of successes = 9

n = 10

The probability that at least nine out of ten people used an online travel website when they booked their airline ticket

At least 9 out of 10 means

x ≥ 9 = x = 9 and x = 10

Hence,

P(x ≥ 9) = 10C9 × (0.72^9 × 0.28^10 - 9) + 10C10 × ( 0.72^10 × 0.28^10 - 10)

P(x ≥ 9) = 0.14559635388 + 0.0374390623

= 0.18303541631

≈ 0.183

3 0
3 years ago
So this is for my geometry I'm trying to work on my review and I'm hoping that maybe one of you guys out here could help me with
alukav5142 [94]
Sorry it’s not that neat but I think the answer would be in the exact surd form root 233

7 0
3 years ago
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