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Rasek [7]
3 years ago
7

Please help with both questions the person with the correct answers will get brainliest

Mathematics
1 answer:
Andreyy893 years ago
8 0
I think it’s number 7 is A and number 8 is C
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Calculate the sample standard deviation and sample variance for the following frequency distribution of final exam scores in a s
Furkat [3]

Answer:

using

Step-by-step explanation:

\sqrt{efx(x - x) \div fx}  \\

5 0
3 years ago
In the distance, an airplane is taking off. As it ascends during take-off, it makes a slanted line that cuts through the rainbow
irakobra [83]

Answer:

The equation of the parabola is given to be : y = -x² + 36

So, the airplane will cut the rainbow if the graph of the equation of airplane intersects the graph of rainbow.

Now, to find the equation of airplane :

The points through which airplane passes are : (1,0) and (0,2)

⇒ Equation : 2x + y = 2

This equation will  intersect the parabola at exactly two points.

And the points are the solution of these two equation :

(-4.916,11.832) and (6.916,-11.832)

The required table is :

x        -4.916       11.832

y         6.916      -11.832

7 0
4 years ago
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What is 3b to the second power minutes b, of b=5?
Sav [38]
(3b)^{2} - b
where
b = 5
is 220.
3 0
3 years ago
Write an arithmetic sequence whose common difference is 18
Yanka [14]

Answer:

Sequence: 6, 14, 22, 30, 38, 46, 54

7 0
3 years ago
2 divided by 3 + 4 times 2
Stells [14]

Answer:

8.66666666666 (11)

Step-by-step explanation:

2 divided by 3 -.666666666666666

4 times 3 is 8

5 0
3 years ago
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