if there are 39 people in a room and everyone has to shake hands with everyone exactly once, how many handshakes are there?

a restaurant sellos 10 tacos for $20.00 or 30 of the same type of taco for $50.00. Which is the better deal?

The average sunflower has 34 petals what is the best estimate of the total number of petals on 57 flowers sunflowers

A cat spends about 7 out of 10 hours, sleeping. About what percent of a cat's day is spent sleeping?

The morrows have dinner at Shu's kitchen. The cost if the dinner is $25. What is the final bill if the sales tax is 4%

Express the number using scientific notation: 0.000000067 Select one: O a. 67 x 10-7 O b. 6.7 x 10-7 O c. can not be written in scientific form O d. 6.7 x 10 - 8

Julia exercises at the gym. For every 3 minutes she spends running, she spends 5 minutes lifting weights Which of the following could be how Julia spends time at the gym? A Run for 10 minutes and lift weights for 12 minutes.

What is 21/28 simplified

What's is the number of 15,409

Which of the following illustrates the truth value of the given statements? 5.3 = 15 or 7 + 5 = 20

18 thousands equals Renaming numbers