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Leya [2.2K]
3 years ago
13

Please answer all of these

Mathematics
1 answer:
Nina [5.8K]3 years ago
7 0

Answer:

4 is D, 5 is D, 6 is A, 7 is C

Step-by-step explanation:

just do da math

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Suppose Y varies directly with X, and Y = 15 and X = 5. Write a direct variation equation that relates X and Y. What is the valu
Oksana_A [137]

Answer:

Step-by-step explanation:

If two variables are directly proportional, it means that an increase in the value of one variable would cause a corresponding increase in the other variable. Also, a decrease in the value of one variable would cause a corresponding decrease in the other variable.

Given that Y varies directly with X, and Y = 15 and X = 5, if we introduce a constant of proportionality, k, the expression becomes

15 = 5k

k = 15/5

k = 3

The equation would be

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Therefore, when X = 9, the value of Y would be

Y = 3 × 9

Y = 27

6 0
3 years ago
Somebody help me please
fredd [130]

Answer:

decreaseing

Step-by-step explanation:

-2 it goes down

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7 0
3 years ago
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If a is negative and b is positive, is a2b positive or negative?
kolezko [41]

Answer:

negative

Step-by-step explanation:

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Simplify: (3x2 - 4x + 6) + (7x - 2)
V125BC [204]

Answer:

11x-2

Step-by-step explanation:

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8 0
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