X = -1 is the answer to -2x2+x+8=0
Answer: it contains 200 grams of zinc.
Step-by-step explanation:
Ratio of zinc to copper is 4 to 15 = 4;15
Total ratio = 4+15= 19
We first find amount of both zinc and copper( the whole chemical) which is equal to
ratio of copper / total ratio x (the entire chemical--total grams of zinc and copper) =amount of copper
15/19 x X = 750
X= 750 X 19 / 15= 950 grams
To find amount of zinc in the chemical = ratio of zinc / total ratio x total amount of chemical
=4/19 x 950
=200 grams
Answer:
x = 15
Step-by-step explanation:
Step-by-step explanation:
Im not sure ut it looks like 3x over 3x would cancel eachother out.
Both of them were sold equally. (246)
I do not think this is the correct answer
