$256/4 hrs = 64 hrs
3 hrs x $64 = $192
2 hrs x $64 = $128
$256 + $192 + $128 = $576
Or
(4+3+2) x $64 = $576
9 x $64 = $576
This equation states that x equals -1. So you plug in -1 to all the x's and solve.
So, your equation would be f(-1) = (-1)(2) - 81
So, f(-1) = -2 - 81
Then, this means that f(-1) = -83
So........
f(-1) is equal to -83
It will be $15 dollars for 5 drinks
1/3 you simplify 3/18 to 1/6 then it then goes onto 1/3
Answer:
Mass of proton (m) = 1.67×10^(-27) kg
Step-by-step explanation:
Mass of proton (m) = 1.67×10^(-27) kg.
Since, 1 kg = 1000 g
Therefore, m = 1.67x10^(-27+3) g = 1.67x10^(-24) g
Let N no. of protons be present in 1 g. Hence, Nxm = 1 g
So, N = 1 / m = 1 / (1.67x10^(-24))
N = 6x10^(23) (approx.)
Exact mass of proton gives N = 6.022 x 10^(23).
That is a very special no. In fact, it is the Avogadro’s constant used frequently in chemistry. Avogadro’s no. is actually the number of atoms in exactly 12 g of C-12 isotope of carbon. Since, the atomic mass of C-12 is 12 u (unified mass), then again the no. of carbon atoms turn out to be N.