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Tanya [424]
3 years ago
9

What does she need to score on the fifth teat to get exactly a mean of 90?

Mathematics
1 answer:
loris [4]3 years ago
8 0
I think I can bravely ignore the Freudian slip and solve this one.

-- If the mean of 5 tests is 90, then all 5 scores add up to (5 x 90) = 450

-- The sum of her first 4 scores is (95+ 90 + 85 + 95) = 365

-- If she has one more test to average 90, then she needs
to score (450 - 365) = <u>85</u> on it.

That looks like choice 'G '.
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3 years ago
A. 4,-4<br> B. 2,-5<br> C.0,6<br> D.-2,5<br> Which would it be?
kipiarov [429]

Answer:

A

Step-by-step explanation:

If we insert the original coordinates into the problem, we will find the answer.

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remember, adding to X means moving the point right, subtracting to X means moving left.

Adding to Y means moving the point up, subtracting to Y means moving down.

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2 years ago
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Yakvenalex [24]

Answer:  120 ft

<u>Step-by-step explanation:</u>

The Ellipse equation is:   \dfrac{(x-h)^2}{a^2}-\dfrac{(y-k)^2}{b^2}=1       where

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Given: horizontal diameter = 122  →  horizontal radius = 61 = a

          vertical diameter = 22  →  vertical radius = 11 = b

Foci (c):   61² - 11² = c²

            3721 - 121 = c²

                  3600 = c²

                    ±60 = c

Let (h, k) = (0, 0)

Then the foci are located at -60 and +60.

The distance between them is 60 + 60 = 120

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3 years ago
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valina [46]

Answer:22+7

Step-by-step explanation:

3 0
3 years ago
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