Which expressions are equivalent to 8 (negative 10 x + 3.5 y minus 7)? select two options. negative 80 x + 24.5 y minus 56 negative 80 x + 28 y minus 56 80 x + 28 y + 56 4 (negative 20 x + 7 y minus 14) negative 4 (negative 20 x + 7 y minus 14)

B. Negative 80 x + 28 y minus 56

This is equivalent to -80x + 28y - 56

C. 4 (negative 20 x + 7 y minus 14)

This is equivalent to -80x + 28y - 56

Step-by-step explanation:

Let's find out the options that are equivalent to:

8 (negative 10 x + 3.5 y minus 7)

8 ( - 10x + 3.5y - 7) =

-80x + 28y - 56

Options:

A. Negative 80 x + 24.5 y minus 56

This is not equivalent.

B. Negative 80 x + 28 y minus 56

This is equivalent to -80x + 28y - 56

C. 4 (negative 20 x + 7 y minus 14)

-80x + 28y - 56

This is equivalent to -80x + 28y - 56

D. Negative 4 (negative 20 x + 7 y minus 14)

80x - 28y + 56

This is not equivalent.

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.