Answer:
Step-by-step explanation:
13x+2y=1
+ 5x-2y=-19
-------------------
18x=18
x=1
5x1-2y=-19
5-2y=-19
-2y=-19-5
-2y=14
-y=7
y=-7
x=1
y=-7
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.
180-165=15
15 degrees is your answer
Answer:
40 sq cm
Step-by-step explanation:
This
area = length times width so 5 times 8 is 40