Question: Carbon-11 has a half-life of about 20 minutes. If we start with 200 grams, how

much will be left after 3 hours?

A. 25 grams

B. 2.5 grams

C. 0.39 grams

D. 0.039 grams

The cow had 2 grass and the dog ate 3 times as much as the cow. how much did the cow eat

Round each number to the nearest tenth. What is the best estimate for the answer to 471.41 - 397.46? A. 70 B. 73.9 C. 74 D. 74.9

A basketball player made 63 out of 100 attempted free throws. What percent of free throws did the players make

What is the greatest whole # that rounds to 67400?

1. 2300 hrs = pm 2. What is the third angle of a triangle if the other angles are 48° and 29°? 3. What is the value of 9 in 28.194? 4. Round 158 960 to the nearest hundred. 5. Estimate 298 * 21 6. How much is 5.3 m at $7 per metre? 7.

How are the ratios 100/2, 150/3, 175/3.5, 200/4 related to 50/1?

Divide and answer in simplest form: 9: 6 5

A sample of 2,845 auto workers was selected to learn if they would go on strike. Over 50% of those in the sample declared they would strike.

If p=-2 and q=-5, is the value of p/q equivalent to 2/5

There are 190 students taking band, chorus, or both. If there are 180 students taking band and 60 students in both band and chorus, how many students are only in chorus?