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Serhud [2]
3 years ago
7

A segment with endpoints (5,8) and (-6,8) is rotated around the origin. How long will the new segment be?

Mathematics
1 answer:
Gekata [30.6K]3 years ago
5 0
The segment was only rotated, not changed. It would be the same length as the original.

To find the length, use the distance formula.

\sqrt{ {(x2 - x1)}^{2}  + ( {y2 - y1)}^{2} }
(5, 8) would be point 1.

(-6,8) would be point 2.

Plug them into the formula.

\sqrt{( { - 6 - 5)}^{2}  + ( {8 - 8)}^{2}  }
Simplify.

\sqrt{( { - 11)}^{2}  + ( {0)}^{2} }
\sqrt{121 + 0}
\sqrt{121}
Square root this answer.
\sqrt{121}  =  + or - 11
Negative distances aren't possible, so your answer is 11.

Hope this helped!

:)
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A rental car company claims the mean time to rent a car on their website is 60 seconds with a standard deviation of 22 seconds.
Gelneren [198K]

Answer:

Since the calculated value of Z does not fall in the critical region we accept our null hypothesis that mean = 60 seconds

Step-by-step explanation:

State the null hypothesis

H0: u = 60against the claim

Ha u≠   60   (this is a two tailed test)

Sample size n= 36

Sample mean=X`= 55

Population mean = u= 60

The significance level α = 0.05

Standard deviation= Sd = 22 seconds

Z= X`- u / Sd /√n

Z= 55- 60 / 22/√6

z= - 5/22/6

Z= -1.3635

The value of z from the table is Z∝/2= ±1.96

The critical region is less than - 1.96 and greater than 1.96.

Since the calculated value of Z does not fall in the critical region we accept our null hypothesis that mean = 60 seconds

4 0
3 years ago
Please, Please help ASAP
BlackZzzverrR [31]

Answer:

5 is the answer

please mark as brainlist

thank you

7 0
2 years ago
Read 2 more answers
What is an equation of the line that passes through (2,2) and is parellel to the line y=7x
laila [671]

Answer:

Therefore, equation of the line that passes through (2,2) and is parellel to the line y=7x is y=7x-12

Step-by-step explanation:

Given:

a line y=7x

To Find:

Equation of line passing through ( 2, 2) and is parellel to the line y=7x

Solution:

y=7x     ...........Given

Comparing with,

y=mx

Where m =slope

We get

Slope = m = 7

We know that parallel lines have Equal slopes.

Therefore the slope of the required line passing through (2 , 2) will also have the slope = m = 7.

Now the equation of line in slope point form given by

(y-y_{1})=m(x-x_{1})

Substituting the points and so we will get the required equation of the line,

(y-2)=7(x-2)=7x-14\\\\y=7x-12......Equation\ of\ line

Therefore, equation of the line that passes through (2,2) and is parellel to the line y=7x is y=7x-12

4 0
3 years ago
Lines sand tare perpendicular. If the slope of line sis 5, what is the slope of<br> line t?
Sveta_85 [38]

Answer:

  -1/5

Step-by-step explanation:

Perpendicular lines have slopes that are the opposite reciprocal of one another.

The slope of line t is the opposite reciprocal of the slope of line s:

  slope of t = -1/(slope of s)

  slope of t = -1/5

6 0
3 years ago
An article which cost money 150 was sold at a loss of 5%.what was the selling price?
Hunter-Best [27]

Answer:

142.5

Step-by-step explanation:

150/x=100/95

95*150/100=

142.5

3 0
3 years ago
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