The answer is 160 because as you stated in the question the number of bacteria doubles every five minutes, and after 10 minutes there are 40. Therefore, after 15 minutes there are 80 (40 doubled is 80), and after 20 (another 5 minutes), the number of bacteria is the double of 80, which is 160.
- Hope I helped :)
- PeaceLoveHappiness

6 0

3 years ago

A plane starts at the origin of the coordinate plane. The plane flies 0.5 units left and 3.5 units up to point X. What are the c

kondor19780726 [428]

Since the plane starts at (0,0), you don't have to factor in anything except for the translation. The plane would be at (-.5, 3.5)

8 0

3 years ago

Read 2 more answers

The high temperature one day was 30 Fahrenheit. Then the temperature dropped 23 degrees during the night. Does the expression 30

erastovalidia [21]

Answer:

This is a single a step problem. When you subtract a positive you can flip the signs.