First 20 minutes:1 Second 20:2 Third 20:4 Fourth 20: 8. Fifth 20: 16 Sixth 20: 32. C is your answer
Answer:
y = 90
Step-by-step explanation:
You can use proportions to answer this question.

Cross multiply 30 to -9; -3 to y

Isolate <em>y</em> by dividing -3 on both sides

Answer: 10m+2
Explanation: perimeter = all the sides added together. Then simplify it. :)
1week = 7days so
4weeks = 28 days
So 28 x 640 = 17920
1000grams = 1kg
17920 divide 1000 =17.92
Lee uses 17.92kg in those 4weeks
Answer:
C
Step-by-step explanation:
20 - 13 = 7