Answer:
The drop in temperature is 42-(-54)=42+54=96℉. Rate of drop is 12℉. So it will take 96/12=8 hours.
Another way: -54-42=-96, -96/-12=8 hours.
Step-by-step explanation:
First, to rewrite something in scientific notation, we want to move the decimal point a number of times to the right or left to end with a number between 0 and 10. In this case, we want to move the decimal point 7 times to the left to get the number 1.304. In scientific notation, this would be the same as 1.304*10^7.
I hope this helps!
Answer:
12
Step-by-step explanation:
So first, when z is divded by 6 we get 4 left.
So an example for z could be 24.
(24 / 6 = 4)
When z is divded by 2, it would be 12
24 / 2 = 12
(I hope this helps and that you have a nice day!)
Answer:
Tamara incorrectly factored the whole expression.
Step-by-step explanation:
Note that
- 21x=3·7·x;
- 56xy=2·2·2·7·x·y.
Mark in bold all common factors, then GCF(21x,56xy)=7·x=7x.
Thus,
21x+56xy=7x(3+8y).
Hence, Tamara correctly found the GCF of numbers 21 and 56, but incorrectly factored the whole expression.
Answer is
-4 ≠ -18
The slash across the equal sign changes it to a not equal sign