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Murrr4er [49]
3 years ago
5

Find the value of x for which l||m.

Mathematics
1 answer:
AnnyKZ [126]3 years ago
5 0

Answer:

\Large\textnormal{B. \boxed{45}}

Step-by-step explanation:

To find the value of x, first you have to solve isolate it on one side of the equation.

First, rewrite the problem.

\displaystyle (2x-5)+95

Next, add & subtract numbers from left to right.

\displaystyle -5+95=90

\displaystyle 2x+90

Then, divide by 2 from both sides.

\displaystyle \frac{2x}{2}=\frac{90}{2}

Solve.

\displaystyle90\div2=45

As a result, the correct answer is B. 45.

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Answer:

The scale factor of this is 2

Step-by-step explanation:

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3 years ago
Two competing headache remedies claim to give fast-acting relief. An experiment was performed to compare the mean lengths of tim
DaniilM [7]

Answer:

t = 0.875

Step-by-step explanation:

Given

<u>Brand A</u>            <u>Brand B</u>

n_ 1= 12               n_2 = 12

\bar x_1 = 21.8            \bar x_2 = 18.9

\sigma_1 = 8.7              \sigma_2 = 7.5

Required

Determine the test statistic (t)

This is calculated as:

t = \frac{\bar x_1 - \bar x_2}{s\sqrt{\frac{1}{n_1} +  \frac{1}{n_2}}}

Calculate s using:

s = \sqrt{\frac{(n_1-1)*\sigma_1^2+(n_2-1)*\sigma_2^2}{n_1+n_2-2}}

The equation becomes:

s = \sqrt{\frac{(12-1)*8.7^2+(12-1)*7.5^2}{12+12-2}}

s = \sqrt{\frac{1451.34}{22}}

s = \sqrt{65.97}

s = 8.12

So:

t = \frac{\bar x_1 - \bar x_2}{s\sqrt{\frac{1}{n_1} +  \frac{1}{n_2}}}

t = \frac{21.8 - 18.9}{8.12 * \sqrt{\frac{1}{12} + \frac{1}{12}}}

t = \frac{21.8 - 18.9}{8.12 * \sqrt{\frac{1}{6}}}

t = \frac{21.8 - 18.9}{8.12 * 0.408}}

t = \frac{2.9}{3.31296}}

t = 0.875

3 0
3 years ago
Becky learned a total of 6 appetizer recipes over the course of 3 weeks of culinary school. After how many weeks of culinary sch
enot [183]
If the six appetizer recipes are distributed evenly between the three weeks, that would mean that Becky learned two recipes per week.

The answer is 10 weeks, every week Becky learns two recipes.

2 x 10=20
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You have 12.25 minutes left to workout.

Step-by-step explanation:

6 0
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