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3 years ago

A segment with endpoints (3,7) and (-8,7) is rotated around the origin. how long will the new segment be ?

Mathematics

2 answers:

gulaghasi [49]3 years ago

6 0

Answer: 11 units long

I hope this helps and have a great day!

amid [387]3 years ago

4 0

11 units long. When something is rotated it does not change its shape/length, only when it is dilated.

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1. c+z when c = 3 and z = 17

ivann1987 [24]

1) 3+17= 20
2) 40-15= 25
3) 3 x 20= 60
4) 35/5= 7
5) 2 x 6= 1
12= 1
1/12.

8 0

3 years ago

A researchers wants to determine the mean weight of avocados grown in Southern California. The population from which the sample

natka813 [3]

Answer: (0.465, 5.535)

Step-by-step explanation:

Formula to calculate the confidence interval (<em>when population standard deviation is unknown</em>) is given by :-

$\overline{x}\pm t_{\alpha/2} \dfrac{s}{\sqrt{n}}$

, where $\overline{x}$ = sample mean.

s= sample standard deviation.

n= Sample size.

$t_{\alpha/2}$ = critical value

By considering the given information , we have

$\overline{x}=6$

s=0.75

n= 9

Significance level = $\alpha=0.1$ [1-0.90=0.1]

By using students' t distribution -table , the critical value for 95% confidence level :

$t_{\alpha/2 , n-1}=t_{0.1/2,\ 8}=1.86$

[Note: degree of freedom = n-1]

Now, the 90% confidence interval for the true mean weight of these Southern California avocados will be :

$6\pm (1.86) \dfrac{0.75}{\sqrt{9}}$

$6\pm (1.86) \dfrac{0.75}{3}$

$6\pm (1.86) 0.25$

$6\pm 0.465=(6-0.465,\ 6+0.465)=(0.465,\ 5.535)$

Hence, the required confidence interval =(0.465, 5.535)

4 0

2 years ago

Explain 1/6 + 1/3 = 1/2

kicyunya [14]

ANSWER is correct

Step-by-step explanation:6 goes into 3 evenly multiply oneterm together a common denominator multiply 1 by 2 , get 2 multiply 3 by 2 and get 6 since denominas 2+1=3

hope it healp

3 0

3 years ago

What is Y=2x-1 and Y=3x+2

Readme [11.4K]

Answer:

{y,x} = {-7,-3}

Step-by-step explanation:

- 3x = 2

y - 2x = -1

-3x + y = 2 -2x + y = -1

y = 2x - 1

(2x-1) - 3x = 2

- x = 3 x = - 3

y = 2x-1

x = -3

y = 2(-3)-1 = -7

4 0

3 years ago

The gas tank of a certain car contains 13 gal when the driver of the car begins a trip. For each mile driven by the driver, the

Stels [109]

Answer:

a. write a linear function for the number of gallons of gas in the tank in terms of the number of miles driven.

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2 years ago