Pls help i need it now pls i will give 20points pls answer it correctly pls Solve the system y = -x + 7 and y = -0.5(x – 3)^2 +

Question

Pls help i need it now pls i will give 20points pls answer it correctly pls

Solve the system y = -x + 7 and y = -0.5(x – 3)^2 + 8

in progress 0
Maris 5 years 2021-07-22T16:26:57+00:00 2 Answers 27 views 0

Answers ( )

  1. minhkhoi
    0
    2021-07-22T16:28:19+00:00
    Reply

    Answer:

    (-1,6) and (-7,0)

    Step-by-step explanation:

    -x+7=-0.5(x-3)^2+8

    times both sides by -2

    2x-14=(x-3)^2-16

    expand

    2x-14=x^2-6x+9-16

    add 14-2x to both sides

    0=x^2-8x+7

    factor

    0=(x-7)(x-1)

    set to zero

    0=x-7

    7=x

    0=x-1

    1=x

    so find y

    y=-x+7

    y=-1+7

    y=6

    or

    y=-7+7

    y=0

  2. danthu
    0
    2021-07-22T16:28:54+00:00
    Reply

    Step-by-step explanation:

    -x+7=-0.5(x-3)^2+8

    -x+7=-0.5x^10 -4.5^10

    am I getting …!?

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )