Answer:
<u>Jamie's mistake</u>: The last term and not . Jamie multiply the signs incorrectly.
<u>Advice to avoid this mistake in the future</u>: Jamie should remember that when two negative numbers are multiplied, the result is a positive number.
Step-by-step explanation:
The correct procedure is the one shown below:
You can identify that the last term is actually and not , so Jamie multiply the signs incorrectly.
To avoid that mistake in the future, Jamie must remember the mulitplication of signs:
So when two negative numbers are multiplied, the result is a positive number.
Answer:
For the first one on the left, you need to evaluate the expressions inside the parenthesis. For Question number 6, evaluate the exponent first.
Step-by-step explanation:
Think of PEMDAS, order of operations.
Parenthesis
Exponent
Multiplication
Division
Addition
Subtraction
999999999999999999999999999999999999
Answer:
x=-5 ,y=0
Step-by-step explanation:
(4x- 10y=- 20) *3
<u>(</u><u>6x-15y=-30</u><u>)</u><u> </u><u>*</u><u>2</u>
Y=0
X=-5