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BaLLatris [955]
2 years ago
5

Find the probability.

Mathematics
1 answer:
pogonyaev2 years ago
5 0

|\Omega|=14\cdot13=182\\|A|=6\cdot4=24\\\\P(A)=\dfrac{24}{182}=\dfrac{12}{91}\approx13.2\%

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Please answer quickly I only have 5 mins lol. The ratio of students polled in 6th grade who prefer lemonade to Iced tea is 8:4,
zhannawk [14.2K]

Answer:

Let total students who prefer lemonade is 2a and who prefer ice tea is a.

Students in 6th grade=39

2a+a=39

3a=39

a=39/3

a=13

students who prefer lemonate is 13

and those who prefer ice tea is 2a=26

4 0
2 years ago
Which of the following is a perfect square? <br><br> A. 169<br> B. 154<br> C. 279<br> D. 115
castortr0y [4]
169 = 13²

Answer is A. 169
4 0
3 years ago
Read 2 more answers
Aaron is using a special beaker in science that is a cylinder with a radius of 2 cm and a height of 3 cm on top of a cylinder th
Vilka [71]
Since in the above case, the beaker has two sections each with different radius and height, we will divide this problem into two parts.

We will calculate the volume of both the beakers separately and then add them up together to get the volume of the beaker.

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Beaker 2:

Radius (r₂) = 6 cm
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7 0
3 years ago
Read 2 more answers
Job a, $15/hour, job b, $12/hour, how many hours at each job to earn $360
stira [4]

Answer:

Job A, will take 24 hours and Job B, will take 30 hours

Step-by-step explanation:

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7 0
2 years ago
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A college-entrance exam is designed so that scores are normally distributed with a mean of 500 and a standard deviation of 100.
Crank

Answer: 1.25

Step-by-step explanation:

Given: A college-entrance exam is designed so that scores are normally distributed with a mean(\mu) = 500 and a standard deviation(\sigma) =  100.

A z-score measures how many standard deviations a given measurement deviates from the mean.

Let Y be a random variable that denotes the scores in the exam.

Formula for z-score = \dfrac{Y-\mu}{\sigma}

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Therefore , the required z-score = 1.25

6 0
3 years ago
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