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Alchen [17]
3 years ago
14

In a recent student government​ election, the ratio of students who voted for the winner to all the students who voted was 0.55

The number of students who voted was 40. How many votes did the winner​ get?
Mathematics
2 answers:
vlabodo [156]3 years ago
8 0
The answer is 22 students<span />
Temka [501]3 years ago
3 0
The ratio being 0.55 means 55% of students voted for the person who ended up winning. If there were 40 people who voted, just find 55% of 40.
This is done by 0.55 • 40, which equals 22.
So 22 students voted for the person who ended up winning.
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suppose the mean 40 yard dash time of a perfessional football player is 4.41 seconds with a standard deviation of 0.15 seconds.
I am Lyosha [343]
The percent of runners between these two times is 47.72.

We find the z-scores associated with each end of this interval using the formula
z=(X-μ)/σ

For the lower end,
z=(4.11-4.41)/0.15 = -0.3/0.15 = -2

Using a z-table (http://www.z-table.com) we see that the area to the left of, less than, this score is 0.0228.

For the upper end:
z=(4.41-4.41)/0.15 = 0/0.15 = 0

Using a z-table we see that the area to the left of, less than, this score is 0.5000.

We want the area between these times, so we subtract:
0.5000-0.0228 = 0.4772

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3 years ago
Please help me. Solve by using substitution.
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Answer:

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6 0
3 years ago
Read 2 more answers
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ser-zykov [4K]

The equation that represents the cab's total charge is  y = 3x + 5 , Option A is the correct answer.

<h3>What is an Equation ?</h3>

A statement that relate two expressions with an equal sign is called an Equation.

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