Answer: Metal A is 3 times faster than Metal B.
Step-by-step explanation:
Since we have given that
Time taken to oxidised metal A = 
Time taken to oxidised metal B = 
seconds
So, ratio of metal A to metal B would be
So, Ratio of Metal A to Metal B is 1 : 3.
Hence, Metal A is 3 times faster than Metal B.
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Answer:
(x, y, z) = (-1, 0, -3)
Step-by-step explanation:
We notice that the coefficients of z are such that elimination of the z term from the equations is made easy.
Adding equations 1 and 2:
(2x -3y -2z) +(x +3y +2z) = (4) +(-7)
3x = -3
x = -1
Adding equations 2 and 3:
(x +3y +2z) +(-4x -4y -2z) = (-7) +(10)
-3x -y = 3
Substituting for x, we get ...
(-3)(-1) -y = 3
0 = y . . . . . . . . . . . add y-3 to both sides
Then z can be found from any equation. Substituting for x and y in the second equation gives ...
-1 +2z = -7
2z = -6 . . . . . add 1
z = -3 . . . . . .divide by 2
The solution is (x, y, z) = (-1, 0, -3).
Answer:
false
Step-by-step explanation:
because there is no solution or answer
Answer:
D
Step-by-step explanation:
Plugged it into a projectile motion calc, got 1.58. So 1.6 (rounded).
I am not sure but I think it's C
