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zysi [14]
3 years ago
13

What is the mean of the data set

Mathematics
1 answer:
jeyben [28]3 years ago
7 0

To find mean all you have to do is add all the numbers up and divide ny how many numbers there are.  If you add them all together is equals 1295. now divide that number by the amount of numbers there are which is 10, and divide 1295 by 10.  You get 129.5

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Solve the equation 2x^{2}+9x-1=x to the nearest 10th
Scilla [17]

Answer:

2x2+9x−1=x

Step 1: Subtract x from both sides.

2x2+9x−1−x=x−x

2x2+8x−1=0

Step 2: Use quadratic formula with a=2, b=8, c=-1.

x=

−b±√b2−4ac

2a

x=

−(8)±√(8)2−4(2)(−1)

2(2)

x=

−8±√72

4

x=−2+

3

2

√2 or x=−2+

−3

2

√2

Step-by-step explanation:

This is what I got but I'm not 100% positive. I checked it on a calculator and it seemed to check out.

4 0
3 years ago
Kyra has 2 plates, 2 cups, and 2 bowls. If she chooses one of each randomly, what is the probability that the plate, cup, and bo
tensa zangetsu [6.8K]
The correct answer is A. <span>0.125
</span><span>
1/8(this is a fraction)</span>
(divide the numerator by the denominator)

1÷8 = 0.125
If you want you can Convert the number to a percentage:<span>
0.125×100=12.5%

but the question is asking for decimal form therefore the answer is </span>0.125.
I also did the quiz and this was correct

Hope this helps!! :D
7 0
3 years ago
Read 2 more answers
The difference of sample means of two populations is 55.4, and the standard deviation of the difference of sample means is 28.1.
Anna [14]

Answer:

The difference of the two means is not significant, so the null hypothesis must be rejected.


4 0
3 years ago
Read 2 more answers
What is the inverse of the function y=4^x
KengaRu [80]

Answer:  We are supped to solve for y so it will be division because that's the inverse for x. so: x/4 is your answer.

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3 years ago
Aline passes through the points (-1, 4) and (2,-2). What is the equation of this line?
irina1246 [14]

Answer:

y= -2x+2

Step-by-step explanation:

8 0
3 years ago
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