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Nataly [62]
3 years ago
12

Help !!!!

Mathematics
1 answer:
svp [43]3 years ago
6 0
The mean of the data is 11

now we find the difference between the mean and each number
1, 2, 3, 0.5, 0.25, 1.25, 1. 

now we square the numbers 
1, 4, 9, 0.25, 0.0625, 1.

now we find the mean of the new numbers
which is 2.1875

2.1875 is your standard deviation.

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40+2 times 39 how can you get the answer
IrinaVladis [17]
The answer is 1638

I got answer by using a calculator
6 0
3 years ago
(y + 4 / 2y) + (y-2 / 3) = (3y^2 + 10 / 6y) for y<br>{-2, 1}<br>{-2, 3}<br>{}
vaieri [72.5K]

Answer:

{-2, 1}

Step-by-step explanation:

\frac{y+4}{2y} +\frac{y-2}{3} =\frac{3y^2+10}{6y}

Make the fractions have a common denominator.

\frac{3}{3} (\frac{y+4}{2y}) +\frac{x}{y} (\frac{y-2}{3}) =\frac{3y^2+10}{6y}\\\frac{3y+12}{6y} +\frac{2y^2-4y}{6y} =\frac{3y^2+10}{6y}\\\frac{2y^2-y+12}{6y} =\frac{3y^2+10}{6y}

Now that both sides of the equation have a common denominator, you can cancel out the denominators.

2y^2-y+12=3y^2+10

Now, set the equation equal to zero and factor.

2y^2-y+12=3y^2+10\\-y^2-y+2=0\\(-y-2)(y-1)=0\\\\-y-2=0\\y=2\\\\y-1=0\\y=-1

The y-values are {-2, 1}

6 0
3 years ago
What is the coefficient in the following expression?
ikadub [295]

Answer:

c)5

Step-by-step explanation:

Coefficient is always the numerical value before the variable

I hope this helped and have a good rest of your day!

4 0
3 years ago
Read 2 more answers
What is the quotient in simplest form? 4/5 ÷ 8 a. 1/10 b. 1/2 c.8 d. 20​
r-ruslan [8.4K]

Answer:

1/10

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
How many possible outcomes are there when flipping a coin 9 times?<br> its 512 right?
BabaBlast [244]
Yes, I believe so.

Hope this helps
5 0
3 years ago
Read 2 more answers
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