How many 1/4 teaspoon doses are in 7/8 teaspoon of medicine

The correct answer is:

3 1/2.

Explanation:

To find out how many 1/4 tsp doses are in 7/8 tsp of medicine, we divide:

7/8 ÷ 1/4

To divide fractions, flip the second fraction and multiply:

7/8 × 4/1

Multiply straight across:

7/8 × 4/1 = (7×4)/(8×1) = 28/8

To simplify this, we see how many times 8 will divide into 28. It divides evenly 3 times; this is our whole number.

After 8 goes into 28 3 times, there are 4 left over. This is the numerator of our fraction (8 is the denominator):

3 4/8 = 3 1/2

600,000,000,000, or 6e14

step-by-step explanation:

e^-kt = n/n0 = 0.79  

-kt = ln 0.79  

t = - ln 0.79/0.0001  

= 2357 years

step-by-step explanation: