Answer:
x = 42
Step-by-step explanation:
The marked angles are supplementary, so their sum is 180°.
(2x +8) +(2x +4) = 180
4x +12 = 180 . . . . . . . . . simplify
x +3 = 45 . . . . . . . divide by 4 (because we can)
x = 42 . . . . . . subtract 3
_____
<em>Additional comment</em>
A "two-step" linear equation like this one is usually solved by subtracting the unwanted constant, then dividing by the coefficient of the variable. Here, we have done those steps in reverse order. This makes the numbers smaller and eliminates the coefficient of the variable. Sometimes I find it easier to solve the equation this way.
Answer:
B
C
B
Step-by-step explanation:
1. Percent means out of 100
8% = 8/100
.08
B
2. Is means equals and of means multiply
W = 48% *180
W = .48 *180
W =86.4
C
3. Is means equals and of means multiply
80 = 125% * W
80 = 1.25 W
Divide each side by 1.25
80/1.25 = W
64
B
Answer:
it increases by 125 for each ton of sugar being transported
Step-by-step explanation:
750-875= 125
Without the actually predicted values in comparison to the real values it is only possible to give a very likely answer based on their scale:
a) is 25 million off, which sounds bad but when compared to a few billion in population it's not even 1%
b)3 billion is more than half the world population as error: very unlikely
c)154 billion, unlikely that a prediction is off by a factor of ~30
d)same as c
so a) is most likely the solution, but in theory the predictions could be arbitrarily bad (things like negative population, or extreme growths)
I got 8
because 16-8 equals 8
