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fredd [130]
2 years ago
11

You make $5 an hour in tips working at a restaurant

Mathematics
1 answer:
zubka84 [21]2 years ago
8 0
Answer: c
explanation:
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PLEASE WILL GIVE BRAINLIEST!!
sveta [45]

Answer:

10.5

Step-by-step explanation:

because 10.5x2=21. and 45+13+21=79, 100-79= 21.

7 0
3 years ago
NEED THE ANSWER ASAP PLEASE
frutty [35]

Answer:

x = 9

Step-by-step explanation:

Since the angle is bisected by rhe segment then the ratio of the sides to the corresponding parts of the base are equal, that is

\frac{15}{x} = \frac{20}{12} ( cross- multiply )

20x = 180 ( divide both sides by 20 )

x = 9

5 0
3 years ago
Isaac is looking through binoculars on a whale watching trip when he notices a sea otter in the distance. If he is 20 feet above
sveta [45]
Tan of an angle = perpendicular / base 
<span>Here, perpendicular is the side of the triangle opposite the angle. </span>
<span>And base is the arm of the angle other the hypotenuse. </span>

<span>If the side of the triangle to be found (marked as ? in the figure) is x, then </span>

<span>perpendicular = 20 feet </span>
<span>base = x </span>

<span>so, tan 30 = 20/x </span>
<span>so, x = 20/(tan 30 degrees) = 34.64 feet </span>
<span>= 35 feet to the nearest foot</span>
6 0
2 years ago
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PLEASE HELP, WILL MARK BRAINLIEST! Solve for y when x = 2. y = 4x +2
Colt1911 [192]
When x equals 2 you have to plug in 2 for x in your equation, which would be y= 4(2)+2 = 8+2 =10 Final answer: 10
4 0
3 years ago
Read 2 more answers
A commonly used IQ test is scaled to have a mean of 100 and a standard deviation 15. A school counselor was curious about the av
Licemer1 [7]

Answer: (103.74,112.06)

Step-by-step explanation:

The confidence interval for population mean is given by :_

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

Given : Sample size : n= 50

Sample mean : \overline{x}=107.9

Standard deviation : \sigma=15

Significance level : \alpha: 1-0.95=0.5

Critical value : z_{\alpha/2}=1.96

Then the 95% confidence interval for the student IQ in the school will be :-

107.9\pm (1.96)\dfrac{15}{\sqrt{50}}\\\\\approx107.9\pm0.075\\\\=(107.9-4.16,107.9+4.16)=(103.74,112.06)

Hence, the 95% confidence interval for the student IQ in the school= (103.74,112.06)

4 0
3 years ago
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