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Ann [662]
3 years ago
11

A math class has three girls and 7 boys in the 7th grade and five girls and five boys in the 8th grade the teacher randomly sele

cts a 7th grader and an 8th grader from the class 4A competition what is the probability that the students she select are boys write your answer as a fraction in simplest form
Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
7 0

Answer:

7/20

Step-by-step explanation:

Seventh grade: Total = 3 + 7 = 10

Number of boys = 7 boys

Probability of a boy being picked = 7/10

Eighth grade: Total 5 + 5 = 10

Number of boys = 5

Probability 5/10 = 1/2

The probability of the correct outcome = 7/10  *  1/2  = 7 / 20

Answer: 7 / 20

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7,300 deposit earning 3.3% compounded monthly after 1 year. What will the balance after 1 year will be?
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$7,544.58

Step-by-step explanation:

We will use the compound interest formula provided to solve this:

A=P(1+\frac{r}{n} )^{nt}

<em>P = initial balance</em>

<em>r = interest rate (decimal)</em>

<em>n = number of times compounded annually</em>

<em>t = time</em>

<em />

First, change 3.3% into its decimal form:

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Since the interest is compounded monthly, we will use 12 for n. Lets plug in the values now:

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