Question

@whitemonsterbunny17
47. Multiply and simplify if possible.
sqrt7x(sqrtx-7sqrt7
48. What is the solution of the equation?
(x-2)^3/4=8

Answer 1

20. What is the solution set to the following system?
x+y=5
x^2+y^2=25
a)(0,-5),(-5,0)
b)(0,5),(-5,0)
C) (0,-5),(5,0)
(0,5),(5,0)

Answer 2

20.
let y = 5-x
substitute in the 2nd eqn
x^2 + (5-x)^2 = 25
x^2 +25-10x +x^2 - 25 =0
x=0; x = 5
you have x substitute in y = 5-x
when x = 0 y = 5 and when x = 5 y = 0
answer choice D