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2 years ago

Please help me Solve the right triangle. Round to the nearest tenth, if necessary.

Mathematics

1 answer:

Darya [45]2 years ago

7 0

Answer:

c = 32.1

b = 34.4

$m\angle{B}=$ 47 degrees

Step-by-step explanation:

Using sine = opp/hyp. to find side c:

$sin(43)=\frac{c}{47}=32.05392...$

Using cosine = adj/hyp. to find side b:

$cos(43)=\frac{b}{47}=34.37362...$

Finding angle B:

It's a right triangle and you're given one of the acute angles, which means you can find the missing third angle. All triangles interior angles add to equal 180 degrees.

180 - (43 + 90) = 47 degrees

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Which of the following statistics provides us with a measure of the variation in the dependent variable explained by the Simple

bija089 [108]

Answer:

R-Squared

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In a simple linear regression model, R-Squared or R² represents the proportion or percentage of the variation of dependent variable, explained by an independent variable or variables.

In simple terms, it is a measure of how well the variation of one variable explains the variation of the other.

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4 years ago

HELP!!!!!!!! PLease!!!!!!!Find all polar coordinates of point P where P = ordered pair 3 comma negative pi divided by 4.

allochka39001 [22]

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3 years ago

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What is the slope? Loooook atttt the chartttt ✨

gavmur [86]

Answer:

m = 3/5

Step-by-step explanation:

Slope Formula: $m=\frac{y_2-y_1}{x_2-x_1}$

Step 1: Find 2 coordinates

(0, 80)

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8 0

3 years ago

Help please I really need it thanks

eduard

Answer:

the last triangle

Step-by-step explanation:

the pythagorean theroem only works for right triangles. a right triangle is a triangle that has a 90 degree angle it the last one is the only one. so its d

pls mark branilest

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3 years ago

One hundred teachers attended a seminar on mathematical problem solving. The attitudes of representative sample of 12 of the tea

andrew11 [14]

Answer:

a) 1.92

b) 3.25

c) 1.5

d) -5.23

Step-by-step explanation:

We are given the following in the question:

4, 7, -1, 1, 0, 5, -2, 2, -1, 6, 5, -3

a) mean of score change

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{23}{12} = 1.92$

b) standard deviation for this population

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

Sum of squares of differences = 126.92

$\sigma = \sqrt{\frac{126.92}{12}} = 3.25$

c) median change score

$Median:\\\text{If n is odd, then}\\\\Median = \displaystyle\frac{n+1}{2}th ~term \\\\\text{If n is even, then}\\\\Median = \displaystyle\frac{\frac{n}{2}th~term + (\frac{n}{2}+1)th~term}{2}$

Sorted data: -3, -2, -1, -1, 0, 1, 2, 4, 5, 5, 6, 7

Median =

$\dfrac{6^{th} + 7^{th}}{2} = \dfrac{1+2}{2} = 1.5$

d) change score that is 2.2 standard deviations below the mean.

$x = \mu - 2.2(\sigma)\\x = 1.92-2.2(3.25)\\x = -5.23$

4 0

3 years ago