The variables a, b, c, d, e, and f represent the numbers 4, 12, 15, 27, 31, and 39 in some order. Suppose that:

a+b=c
b+c=d
c+e=f

The value of a +c+f is

73

Step-by-step explanation:

this is because

a=15

b=12

c=27

d=39

e=4

f=31

You can test it out to be sure tho. Hope I helped!!!

0.85 or 85%

step-by-step explanation:

1) divide 23 by 27

2) round the decimal to the nearest 10

3) so your answer would be 0.85 or 85%

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 !