I will give Brainliest!!!

Mathematics

1 answer:

mixer [17]3 years ago

3 0

Answer: C

Step-by-step explanation:

x = 2 $\sqrt{y+2}$ - 6

x + 6 = 2 $\sqrt{y+2}$

((x+6)/2 = $\sqrt{y+2}$ )^2

(x+6/2)^2 = y+2

y = (x+6/2)^2 -2

y= 1/4x^2 +3x +7

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The mean of a list of test scores is 80. Adding an additional test score of 92 caused the mean to rise to 82. After this additio

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Answer:

Step-by-step explanation:

The mean of a list of test scores is 80

Adding an additional test score of 92 caused the mean to rise to 82

To find:

After this additional, how many total test are in the list ?

Solution: