This week, jamyra spent a total of 100 minutes studying. this total was 20 more than four times the amount of minutes she studied last week. how many minutes did jamyra spend studying last week?

the answer is 20

Step-by-step explanation:

20 times 4 is 80 plus 20 equals 100

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !

idk

step-by-step explanation: i just don't