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ValentinkaMS [17]
2 years ago
8

Solve for the following equation 9/4x + 1/3 = 5/2x

Mathematics
1 answer:
marshall27 [118]2 years ago
7 0

Answer:

3/4

Step-by-step explanation:

plug values in for x till you get it right

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6.67 m/s

Step-by-step explanation:

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A researcher is going to estimate the average typing speed of students of a college. He selects a random sample of 20 students a
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Answer:

The margin of error of the 90% confidence interval of a student's average typing speed is of 1.933 wpm.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 20 - 1 = 19

90% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 19 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.9}{2} = 0.95. So we have T = 1.7291

The margin of error is:

M = T\frac{s}{\sqrt{n}}

In which s is the standard deviation of the sample and n is the size of the sample. For this question, we have s = 5, n = 20. So

M = T\frac{s}{\sqrt{n}}

M = 1.7291\frac{5}{\sqrt{20}}

M = 1.933

The margin of error of the 90% confidence interval of a student's average typing speed is of 1.933 wpm.

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3 years ago
5+3x write in verbal expression
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Answer:

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Answer:

The angle between these radii must be 120º.

Step-by-step explanation:

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Then, we calculate the angle of the radius with respect to the axis of symmetry by knowing the fact that sum of internal angles within triangle equals 180º. That is to say:

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And the angle between these two radii is twice the result.

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The angle between these radii must be 120º.

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Answer:

Clanssa’s team collects m magazines for the recycling drive. JoAnn’s team collects 3 times as many magazines as Clarissa’s team. <u><em>JoAnn’s team collects a total of 654 magazines.​</em></u>

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