Which number is not in scientific notation?
a) 9 ⋅ 10 to the power of 19
b) 7.8 ⋅ 10 to the power of 6
c) 1.45 ⋅ 10to the power of −7
d) 0.33 ⋅ 10 to the power −15

for scientific notation you want a whole number multiplied by 10 to a power

 so since D is a decimal ( 0.33) that is not scientific notation

(-1,-0.5)

step-by-step explanation:

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 !