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2 years ago

Evaluate the expression, using the given value of the variable.

Mathematics

1 answer:

professor190 [17]2 years ago

6 0

The answer is C. 4

7 - 5 x 3 + 4 x 3
= 7 - 15 + 12
= -8 + 12
= 4

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Explanation:

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3 years ago

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1 year ago

Twenty-five randomly selected students were asked the number of movies they watched the previous week. The results are as follow

guajiro [1.7K]

Answer:

a) x = 1.52

b) s = 1.16

Step-by-step explanation:

We have that:

5 students watched 0 movies.

9 students watched 1 movie.

5 students watched 2 movies.

5 students watched 3 movies.

1 student watched 4 movies.

(a) Find the sample mean x.

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(b) Find the approximate sample standard deviation, s.

Standard deviation of the sample.

Square root of the sum of the squares of the values subtracted from the mean, divided by the sample size subtracted by 1. So

$s = \sqrt{\frac{5*(0-1.52)^2 + 9*(1-1.52)^2 + 5*(2-1.52)^2 + 5*(3-1.52)^2 + 1*(4-1.52)^2}{24}} = \sqrt{\frac{32.24}{24}} = 1.16$

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3 years ago

Find the measure of the angle theta

Vlad [161]

Answer:

theta = 48.190

Step-by-step explanation:

Answer: θ = 48.2°

Step-by-step explanation:

The left side of the given triangle is a right triangle with base (adjacent to θ) = 2 and hypotenuse = 3

rounded to three significant digits = 48.2°

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2 years ago