Evaluate the following expression for: x= -2, y=4, z=-3 4(2x+y)-2y+z

Mathematics

1 answer:

otez555 [7]2 years ago

7 0

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$\blue\textsf{\textbf{\underline{\underline{Question:-}}}}$

Evaluate the expression 4(2x+y)-2y+z for x=-2, y=4 and z=-3

$\blue\textsf{\textbf{\underline{\underline{Answer and How to solve:-}}}}$

Before inserting the values of the variables, I recommend writing the equation in its simplest form.

First, use the distributive property and distribute 4:-

8x+4y-2y+z

Simplifying,

8x+2y+z

Now that the expression is in its simplest form, we can substitute the variables and simplify the expression.

First, write -2 in lieu of x:-

8(-2)+2y+z

-16+2y+z

Now, write 4 in lieu of y:-

-16+2(4)+z

-16+8+z

-8+z

Final step:-

write -3 in lieu of z:-

-8+(-3)

-8-3

-11

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The sum of the first 100 positive whole numbers is 5050. What is the sum of the first 100 positive odd whole number?

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