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3 years ago

Evaluate -6(x-2y) when x= -3 and y= -5 a. -42 b. 80 c. -80 d. -16

Mathematics

2 answers:

MakcuM [25]3 years ago

8 0

A because -6 x -3 is 18 and -2 x -5 is 10 x -6 is -60 so -60 + 18 = -42

Vinil7 [7]3 years ago

5 0

Simply substitute x for -3 and y for -5, creating the equation shown below:

-6 (-3 - 2(-5) )
Now that you have your values set up, now you can do the math by starting off with Multiplying -2 by -5, which will get you 10.

Now that you have the parenthesis simplified in the parenthesis, you can use the distributive property by multiplying all the numbers with -6, like so:
-6(-3+10)= 18 - 60, which simplifies to -42, in which (A) is your answer.

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Step-by-step explanation:

8 vehicle.

Step-by-step explanation:

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3 years ago

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3 years ago

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If we are trying to determine if the given is a function of x, then x is the input.

However I can get two outputs from plugging in x=3.

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$y^2=25-9$

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Take the square root of both sides:

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If you graph the equation, it is a circle with radius 5 and center (0,0). So I could I plug in any number for x between -5 and 5 excluding -5 and 5 which would yield only one output each. Since plugging in either one gives:

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