The surface area of which composite figure is the sum of the areas of eight triangular faces? two rectangular pyramids joined at their congruent bases
two rectangular pyramids joined at two congruent lateral faces
two triangular prisms joined at their congruent bases
two triangular prisms joined at two congruent lateral faces

bn,mn,n.vn.

step-by-step explanation:

answer: 80,000

step-by-step explanation:

the population doubles every day.

10,000*2=20,000 day 4

20,000*2=40,000 day 5

40,000*2=80,000 day 6

irrational, then, just means all the numbers that aren't rational. every integer is a rational number, since each integer n can be written in the form n/1. however, numbers like 1/2, 45454737/2424242, and -3/7 are also rational, since they are fractions whose numerator and denominator are integers.

step-by-step explanation: