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bagirrra123 [75]
3 years ago
8

10 POINTS AND BRAINLIEST URGENT MATH QUESTION SEE PICTURE

Mathematics
1 answer:
Lostsunrise [7]3 years ago
5 0

The point-slope form:

y-y_1=m(x-x_1)

m - slope

(x_1,\ y_1) - point

We have the point (3,\ -2)\to x_1=3,\ y_1=-2 and the slope m=\dfrac{2}{3}

Substitute:

y-(-2)=\dfrac{2}{3}(x-3)\\\\\boxed{y+2=\dfrac{2}{3}(x-3)}

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Twenty-five randomly selected students were asked the number of movies they watched the previous week. The results are as follow
guajiro [1.7K]

Answer:

a) x = 1.52

b) s = 1.16

Step-by-step explanation:

We have that:

5 students watched 0 movies.

9 students watched 1 movie.

5 students watched 2 movies.

5 students watched 3 movies.

1 student watched 4 movies.

(a) Find the sample mean x.

Sum divided by the number of students. So

x = \frac{5*0 + 9*1 + 5*2 + 5*3 + 1*4}{5 + 9 + 5 + 5 + 1} = \frac{38}{25} = 1.52

(b) Find the approximate sample standard deviation, s.

Standard deviation of the sample.

Square root of the sum of the squares of the values subtracted from the mean, divided by the sample size subtracted by 1. So

s = \sqrt{\frac{5*(0-1.52)^2 + 9*(1-1.52)^2 + 5*(2-1.52)^2 + 5*(3-1.52)^2 + 1*(4-1.52)^2}{24}} = \sqrt{\frac{32.24}{24}} = 1.16

3 0
3 years ago
jon has to pay $7 admission for the skating rink and $1.50 per hour to rent the rollerblades. how can he skate for $19?
schepotkina [342]

H=Hours he an skate; T=total cost

T=$7.00+($1.50/hr)H

T-$7.00=($1.50/hr)H

(T-$7.00)/($1.50/hr)=H

For T=$19:

($19.00-$7.00)/($1.50/hr)=H

$12.00/($1.50/hr)=H

8hrs=H

ANSWER: Jon can skate 8 hours for $19.00.

Hope this helps!

4 0
3 years ago
What is 100/8 simplified
KonstantinChe [14]
25/2 because you can reduce by 4.
3 0
3 years ago
Read 2 more answers
Can someone help with this
dimaraw [331]
Hey There! :)

Solve for g. 
g/20=12/48

Isolate the variable; Multiply both sides by 20.
(g/20)*20=(12/48)*20
g=240/48
g=5

Hope this helps.
-Benjamin


6 0
3 years ago
A pizza box measure 16 inches by 16 inches by 2 inches .what is the volume of the box?
OverLord2011 [107]

V= L x w x h

V= 16 x 16 x 2

V= 256 x 2

V=512 inches

4 0
3 years ago
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