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kiruha [24]
1 year ago
8

In a class of 35 students, 5 are freshmen, 8 are sophomores, 9 are juniors and 13 are seniors. If 1 student is randomly selected

, what is the probability the student is a junior
Mathematics
1 answer:
Sauron [17]1 year ago
6 0
<h3>Answer:</h3>

\displaystyle\frac{9}{35} or 25.71%.

Probability is the likelihood of an event occurring. The desired outcomes are known as successful outcomes. In this scenario, the successful outcomes are when a junior is selected. The sample size is the total number of students.

<h3>Probability as a Fraction</h3>

Simple probability (the probability of 1 event) can easily be found as a fraction. For the fraction, the number of successful outcomes should be the numerator and the sample size is the denominator.

This means that the probability of selecting a junior is \displaystyle\frac{9}{35}.

<h3>Probability as a Percentage</h3>

In this case, it is easiest to first find the probability as a fraction, but we can then convert it to a percentage if desired.

To convert to the fraction divide the numerator and denominator (I'm rounding to 4 decimal places).

  • 9/35 = 0.2571

Then, multiply this decimal by 100, which is the equivalent of moving the decimal point 2 digits to the left.

  • 0.2571 * 100 = 25.71%
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A construction crew has repaired 1.37 miles of a highway. The total length of the highway to be repaired is 7.9. How many miles
JulijaS [17]

Answer:

Part A: m+1.37=7.9

Part B: 6.53 miles are left to be repaired.

Step-by-step explanation:

Given,

Length of repaired part = 1.37 miles

Total length to be repaired = 7.9 miles

Miles left to be repaired = m

Part A:

Create an equation to show the relationship between the number of miles repaired and the number of miles left to be repaired, m.

Miles left to be repaired + Length of repaired part = Total length to be repaired

m+1.37=7.9

Part B

How many miles are left to be repaired?

Subtracting 1.37 from both sides

6.53 miles are left to be repaired.

Keywords: length, subtraction

Step-by-step explanation:

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3 years ago
What role do animals have in the carbon cycle?
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2 years ago
Read 2 more answers
2 + 10 = 24<br>3 + 6 = 27<br>7 + 2 = 63<br>5 + 3 = ????​
True [87]
  • Answer:

<em>40</em>

  • Step-by-step explanation:

<em>2 + 10 = 24</em>

<em>2(2 + 10) = 2×12 = 24</em>

<em>3 + 6 = 27</em>

<em>3(3 + 6) = 3×9 = 27</em>

<em>7 + 2 = 63</em>

<em>7(7 + 2) = 7×9 = 63</em>

<em>5 + 3 = 40</em>

<em>5(5 + 3) = 5×8 = 40</em>

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3 years ago
What do you get when you subtract 9 from b?
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Answer:

4

step by step:

b-9=4
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Determine whether the vectors u and v are parallel, orthogonal, or neither. u = &lt;6, -2&gt;, v = &lt;8, 24&gt;
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We'll check if they're orthogonal:
u*v=0
(6,-2)*(8,24)=0
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