Answer:
144i + 81
Step-by-step explanation:
(-3*9i)(-5 + 3i) + 9i
-27i (-5 + 3i) + 9i
FOIL
135i + 81 + 9i
144i + 81
It is a simple linear equation with one unknown, we can solve it:
(x/2) - 2 = 9
<span>(x/2) = 9 + 2 = 11
</span>x = 2*11
x = 22
that is the equation's solution
Answer:
C
Step-by-step explanation:
First things first, we need to simplify (8^2)^-4. When a number is raised to a power, and the result of that is raised to another power, the two powers can be multiplied together to simplify. In this case, 2 * -4 = -8, so the question is asking how 8^-8 can be written.
8^-8 is the same as multiplying 8 8s together, and then finding the reciprocal (put it into a fraction where the original number is the denominator and 1 is the numerator).
Therefore, the 1 over the 8 8s multiplied together is the correct answer.
Answer:
21.9 kilograms
Step-by-step explanation:
To find the total amount of sand, We need to add the new to the old. Lets have x be the total amount of sand.
14500+7400=x
Add them up
21900=x
The total amount of sand is 21900 grams
Now to find the kilograms we need to divide this number by 1000. Let y be the kilogram amount.
21900/1000=y
divide
21.9=y
There are 21.9 kilograms
I Believe C is the answer
