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vitfil [10]
3 years ago
10

Which of the following statements is true? A. All relations are functions, and all functions are relations. B. All relations are

functions, but not all functions are relations. C. All functions are relations, but not all relations are functions. D. Not all relations are functions, and not all functions are relations.
Mathematics
1 answer:
Svetach [21]3 years ago
4 0
I would say that C is true.
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Mrs. Bailey gives a test, and her students’ scores range from 30 to 70. She decides to curve the scores, so that they range from
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Answer:

f(x) = x*3/4 + 42.5

Step-by-step explanation:

The original difference between the pair is 70 - 30 = 40

The new difference between the pair is 95 - 65 = 30

Since the differences are not the same, Mrs Bailey must first perform a (slope) multiplication by a factor of 30/40 or 3/4

Then 30 * 3/4 = 22.5

Then she can shift the scores up by 65 - 22.5 = 42.5 in order to get the range from 65 to 95

Therefore, f(x) = x*3/4 + 42.5. We can test that

f(30) = 30*3/4 + 42.5 = 65

f(70) = 70*3/4 + 42.5 = 95

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3 years ago
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NNADVOKAT [17]

Answer:

m = -3

Step-by-step explanation:

First, find two clear points:

(1, -2) (0, 1)

Then, use the slope formula:

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m = <u>1 - (-2)</u>

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m = -3

This means that the rise-over-run is -3 over 1, or 3 over -1.

Which means three down and 1 to the right, or 3 up and 1 to the left.

Slope is the steepness of the line.

5 0
3 years ago
Find y, if x = 60.<br> A) 30° <br> B) 35° <br> C) 40° <br> D) 45°
MArishka [77]
The answer is 30°.
Rule: All three sides must add up to 180
°. 
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7 0
3 years ago
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What are the values of the trigonometric ratios for this triangle?
Norma-Jean [14]
We know that
in the right triangle

<span>sinθ=opposite side/hypotenuse
</span><span>cosθ=adjacent side/hypotenuse
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opposite side angle </span>θ=8
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</span>sinθ=8/17
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Suppose you invest $15,000 at the age of 35, and agree to start receiving
dmitriy555 [2]

Answer: $1500.00

Step-by-step explanation:

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