If an airplane speed is 850 miles / hour , what is it’s speed in meters / seconds ? (1 mile =1609.34 meters )

Iam at home. /: i am playing video games. translate the following statement into symbolic form.

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g

4. a single woman uses an online cash flow calculator which reveals a cash flow of 203. what does this mean?