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saw5 [17]
2 years ago
8

Find the midpoint of the line segment with end coordinates of:(−1,7) and (3,−2)

Mathematics
1 answer:
SOVA2 [1]2 years ago
5 0

Answer:

Step-by-step explanation:

mid point formula = (x1+x2/2 , y1+y2/2)

hence putt the values we get,

mid point = ( -1+3/2 , 7-2/2)

                 = (1 , 2.5)

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Thirteen is seven more than one fifth of a number //how do you right that as an equation?
Bumek [7]
The answer is 13= 7+1/5n
4 0
2 years ago
Solve for x: |x − 2| + 10 = 12 (1 point)
True [87]

Answer:

I think that would be 1

Step-by-step explanation:

Do everything in the lines before anything else. -2 becomes a 2 and then you add that with the 12 and divide 12 on both sides to get one.

6 0
2 years ago
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12. At noon the temperature was 30 degrees Celsius. At night it becomes 25 degrees Celsius. How
yawa3891 [41]

Answer:

5 degrees colder

Step-by-step explanation:

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3 years ago
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A poll agency reports that 75% of teenagers aged 12-17 own smartphones. A random sample of 234 teenagers is drawn. Round your an
GalinKa [24]

Answer:

If our random variable of interest for this case is X="the number of teenagers between 12-17 with smartphone" we can model the variable with this distribution:

X \sim Binom(n=234, p=0.75)

And the mean for this case would be:

E(X) =np = 234*0.75= 175.5

And the standard deviation would be given by:

\sigma =\sqrt{np(1-p)}= \sqrt{234*0.75*(1-0.75)}= 6.624

Step-by-step explanation:

If our random variable of interest for this case is X="the number of teenagers between 12-17 with smartphone" we can model the variable with this distribution:

X \sim Binom(n=234, p=0.75)

And the mean for this case would be:

E(X) =np = 234*0.75= 175.5

And the standard deviation would be given by:

\sigma =\sqrt{np(1-p)}= \sqrt{234*0.75*(1-0.75)}= 6.624

3 0
3 years ago
can someone help me solve this multiplying polynomial question? it would really help, the screenshot is attached (:
Korvikt [17]

Answer:

-20x³ + 0x² + 15x - 20

Step-by-step explanation:

I would have said it the other way.

"Multiply each term in the top row by -5."

 4x³ +  0x   -  3x +  4

<u>×(-5</u>)  <u>×(-5</u>)  <u>×(-5)</u>  <u>×(-5) </u>

-20x³ + 0x² + 15x -20

3 0
3 years ago
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