79 is 4 below 83 so her next grade needs to be 4 above in order to get an average of 83. The answer is 87.
Answer:
Step-by-step explanation:
<u>Multiplying a positive and a negative</u> number will gives us a negative number
-412 *212 = - 87,344
55 kilograms of aluminum and 345 kilograms of the other metals
Answer is A, basically using the Pythagorean theorem but in a slightly different way, should still get you the same answer.
