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german
3 years ago
7

Greta made the following scores on her first semester history tests: 60, 84, 88, 94, 94, 96.

Mathematics
2 answers:
Pani-rosa [81]3 years ago
4 0
A mean the mean is the average
viktelen [127]3 years ago
3 0
Mean, because if she used mean she will get a most favorable impressing of her performance. 
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Please help thanks<br> Xxxxx
Stells [14]

Answer:

A

Step-by-step explanation:

5 0
3 years ago
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Using the quadratic formula to solve 2x2 = 4x – 7, what are the values of x? 2 plus-or-minus StartRoot 10 EndRoot i 1 plus-or-mi
ioda

Answer:

x = 1 +/- \frac{i\sqrt{10} }{2}

Step-by-step explanation:

The equation given is:

2x^2 = 4x - 7\\\\2x^2 - 4x + 7 = 0

Using quadratic formula:

x = \frac{-b +/- \sqrt{b^2 - 4ac} }{2a}

From the question:

a = 2, b = -4, c = 7

Therefore:

x = \frac{4 +/- \sqrt{(-4)^2 - 4 * 2 * 7} }{2 * 2}\\\\x = \frac{4 +/- \sqrt{(16 - 56)} }{4}\\\\x = \frac{4 +/- \sqrt{-40} }{4}\\

=> x = 1 +/- \frac{i\sqrt{10} }{2}

7 0
3 years ago
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Write each mixed number in two different ways
Dafna1 [17]
Where are the numbers
4 0
3 years ago
This is an example of an arithmetic series: 6 + 8 + 10 + 12 + . . . + (4 + 2n) + . . .
nasty-shy [4]

True. A series is arithmetic if its terms come from an arithmetic sequence.

And a sequence is said to be arithmetic any of its two consecutive terms differ by a fixed difference, common to any consecutive pair.

As you can see, in this case, all terms differ by 2, so the sequence

6,\ 8,\ 10,\ 12,\ \ldots,\ 4+2n

is arithmetic, and thus the series

6 + 8 + 10 + 12 + \ldots + (4+2n)

is arithmetic as well.

5 0
3 years ago
Write in standard form 4,000,000+3,000+50+2
Andreas93 [3]
4,003,052 is the answer to the problem
7 0
3 years ago
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