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Lorico [155]
2 years ago
5

Find the measure of angle x.

Mathematics
1 answer:
lukranit [14]2 years ago
7 0

Answer:

<h2>          x = 90°</h2>

Step-by-step explanation:

An angle inscribed across a circle's diameter is always a right angle.

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A researcher at a large company has collected data on both the beginning salary and the current salary of 48 randomly selected e
Nadya [2.5K]

Answer:

a. 0.83

b. 44107.3

c. 2252.7

Step-by-step explanation:

a)

The correlation coefficient is calculated as

byx=rSy/Sx

rSy=byx*Sx

⇒r=byx*Sx/Sy

Sy=standard deviation of y=standard deviation of current salary=15300

Sx=standard deviation of x=standard deviation of beginning salary=5970

byx=2.12

r=2.12*5970/15300

r=12656.4/15300

r=0.83

There is a strong positive correlation between current and beginning salary.

b)

Beginning salary=$22000

As

y^ =−2532.7 + 2.12x.

Current salary=-2532.7+2.12*beginning salary

Current salary=-2532.7+2.12*22000

Current salary=-2532.7+46640

Current salary=$44107.3

The predicted current salary of Mr. Joseph Keller is $44107.3.

c)

Residual=y-y^=Observed-Predicted

Observed Current Salary of Kathy Jones=40000

Beginning salary of Kathy Jones=19000

y^ =−2532.7 + 2.12x.

Predicted Current salary=-2532.7+2.12*beginning salary

Predicted Current salary=-2532.7+2.12*19000

Predicted Current salary=-2532.7+40280

Predicted Current salary=$37747.3

Residual=Observed Current Salary-Predicted Current salary

Residual=40000-27747.3

Residual=$2252.7

The residual for Ms. Jones is $2252.7.

8 0
3 years ago
write an equation in slope intercept form of the line that passes through the points. (-4, 2), (1, -1)
viva [34]

Answer:Y = 3\5x -2\5

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Please help! either one would be appreciated.
bearhunter [10]
#2 part b. the equation is 100+3x+2x=180 and part c. is 3x=48 and 2x=32
5 0
3 years ago
Read 2 more answers
Let p represent any number in the interval (- 18,22). Rewrite the possible values for p in inequality notation.
Nataliya [291]

Answer:

-18 < p < 22

Step-by-step explanation:

We are given the following information in the question.

The open interval: (- 18,22).

Let p belong to the given interval then p represents all the values belonging to the given interval.

Open Interval: An open interval is a interval that does not include the end points.

Thus, we can write:

-18 < p < 22

is the required inequality form required.

That is p can take values greater than -18 and smaller than 22.

6 0
3 years ago
Evaluate the formula V=BH/3 for B=4cm^2 and h=6 cm
Tom [10]
V=BH/3
V=(4)(6)/3
V=(24)/3
V=8
6 0
3 years ago
Read 2 more answers
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