Answer:
(-2, 0)
Step-by-step explanation:
15^2x is 225x. So, we have 225x-3=245. Adding three to both sides, we get 225x=248. Dividing by 225, we have x=248/225.
Answer:
5. 2√6
6. 4
Step-by-step explanation:
5. x =√[3×(3+5] = √3×8 =√24=2√6
6. x(x+5)=6²
x²+5x=36
x²+5x-36=0
(x+9)(x-4) =0
x=-9 or x=4
Answer:
the weight of each marble is 2.55 grams
Answer:
(x, y, z)
(5,-2,3)
Step-by-step explanation:
try plugging those into the equation.
just to make sure I was correct.
