Answer:
It was -23.2 degrees at 6pm.
Step-by-step explanation:
Just simple addition and subtraction!
Answer:
He can make 120 burgers in 30 minutes
Step-by-step explanation:
Set up a proportion where x is the number of hamburgers he'll make in 30 minutes:
=
Cross multiply:
x = 120
So, he can make 120 burgers in 30 minutes.
Answer:
Step-by-step explanation:
The rationalizing factor of
is
Answer:
20 times
Step-by-step explanation:
This is calculated as:
The number of coal China consumes ÷ The number of coal Japan consumes
The number of coal China consumes =4 × 10⁹
The number of coal Japan consumes
= 2 × 10⁸
4 × 10⁹/2 × 10⁸
= 20 times