Y= –5x + 30
x = 10
what is the solution to the system of equations?

(–20, 10)
(10, –20)
(10, 4)
(4, 10

The correct option is 2.

Step-by-step explanation:

The given system of equations is

                  .... (1)

                          ..... (2)

Substitute the value of x from equation (2), in equation (1).

On simplification, we get

The value of xis 10 and the value of y is -20. So, the solution of the given system of equation is (10,-20).

Therefore the correct option is 2.

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!

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