He bought 5 science books and 2 Math Books
5 Science Books = $300
2 Science Books = $100
7 Books = 400
D = m
----
v
2.336 g/cm^3 = m
----
350
(350) 2.336 = m
817.6g = m
Answer:
it depends if x is alr negaitve...
two positives equal a positive
two negatives equal a poitive
one negative and one positive equals a negative
Step-by-step explanation:
hope it helped
Answers:

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Explanation:
By definition, 
Squaring both sides gets us 
Then multiply both sides by i to get 
Repeat the last step and you should get 
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Notice we have this pattern going on:

Once we reach i^4, we start the process over again.
It repeats every 4 terms.
This means we'll divide the exponent over 4 and look at the remainder. We ignore the quotient completely.
157/4 = 39 remainder 1
That remainder 1 is the exponent of the simplified term

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Similarly,
315/4 = 78 remainder 3
So 
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102/4 = 25 remainder 2

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76/4 = 19 remainder 0

Answer:
Opposite sides are congruent (AB = DC).
Opposite angels are congruent (D = B).
Consecutive angles are supplementary (A + D = 180°).
If one angle is right, then all angles are right.
The diagonals of a parallelogram bisect each other.
Each diagonal of a parallelogram separates it into two congruent triangles.
Step-by-step explanation: