During an average life span, the human heart will beat about 2,800,000,000 times. Write this number in scientific notation ...

Triangle D E F is shown. Angle D E F is a right angle. The length of hypotenuse D F is 5 StartRoot 2 EndRoot and the lengths of sides D E and E F are 5. Given △DEF, which is not equal to cos (F) ? sin (F). sin (D). tan (F).

A city has a population of 300000 people. Suppose that each year the population grows by 8.5%. What will the population be after 15 years? Use the calculator provided round your answer to the nearest whole number.

What is the length of chord cd in o below

Ramal filled 3 pages in a stamp album. This is one sixth of the pages in the album. How many pages are three in Ramal's stamp album?

A farmers land is separated into sections of size 2 1/4 acres suppose there are 14 such sections. How many acres of the land does the farmer own?

What is the answer to this (143 (5) + 67) 5=

Least common multiple of 10 and 15

Adam's father spent 1 hour and 50 minutes working on his truck. If it was 7:35 when he stopped working, what time was it when he originally started?

If Sara could type 90 words a minute about how many words could she type in 10 mins

On a trip from virginia to florida the sampson family wants to travel at least 420 miles in 8 hours of driving what must be their average rate of speed