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3 years ago

6

PLLLLLLZZZZ HELP!! MULTIPLE CHOICE!!

1 answer:

liubo4ka [24]3 years ago

5 0

First, set 2x+7 equal to 3x-7 since they are the same angle due to the parallel lines.

2x+7=3x-7
x=14

Then, since 2x+7 and 12y+1 equals 180, put it together to find y:

(2x+7)+(12y+1)=180
(2(14)+7)+(12y+1)=180
12y+1=145
12y=144
y=12

So, x=14 and y=12. Your answer should be C!

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3. A set of n = 18 pairs of scores (X and Y values) has SSX = 20, SSY = 80, and SP = 10. If the mean for the X values is MX = 8

Karo-lina-s [1.5K]

Answer:

a. Pearson Correlation

r= $\frac{1}{4}$ or 0,25

b. The regression equation is

$Y = 6+ 0,5 *X$

Step-by-step explanation:

a. Pearson Correlation

Using the equation for Pearson correlation:

$r = \frac{SP}{\sqrt{(SS_{x} * SS_{y})} }$

$r= \frac{10}{\sqrt{(20 * 80)} }$

$r=\frac{10}{\sqrt{1600} }$

$r=\frac{10}{40} =\frac{1}{4} = 0,25$

b. Regression

Using regression equation

1. $Y = a+ b *X$

2. $a= m_{y} - b* m_{x}$

3. $b= \frac{SP}{SS_{x} }$

So replacing first 'b' because is content in 'a' equation

$b= \frac{SP}{SS_{x} }$

$b= \frac{10}{20}$

$b= \frac{1}{2} = 0,5$

Knowing 'b' can know 'a' and complete the equation

$a= m_{y} - b* m_{x}$

$a= 10 - 0,5* 8$

$a= 6$

Replacing in the equation 1:

1. $Y = a+ b *X$

$Y = 6+ 0,5 *X$

3 0

3 years ago

maddie's bank account the time(hours) and Amount in account($) the order paris are (0,40),(1,49),(2,58),(3,67) what is the rate

Deffense [45]

$9 an hour
that 20% of a penny a second, okayyy!

4 0

3 years ago

Help me out. Mathmatics

Nina [5.8K]

Answer: A. 5.6267 X 10^8

Step-by-step explanation:

(5.62 X 10^8) + (6.7 X 10^5)= 562670000

Which has 8 numbers after 5

5.6267 X 10^8 has 8 as well just minus the zeroes

8 0

3 years ago

5n + 34 = -2 ( 1 - 7n)<br>this is due by midnight.<br><br>NO LINKS PLEASE!

kodGreya [7K]

Answer :

n = 4

Step-by-step explanation:

5n + 34 = -2(1-7n)

first distribute

5n + 34 = -2(1) -2(-7n)

5n + 34 = -2+14n

-5n

+2

then get all of n to the same side

36 = 9n

isolate the variable

36/9 = 9n/9

4 = n

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What percentage of the audience from the 16-25 age group gave the movie a poor rating?

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How many people all together is there ?

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