You calculate the following answer to a problem: 12.655 cm. You are asked to round your answer to four significant figures. Which answer is correct?

a. 12.66 cm

b. 12.65 cm

c. 12.60 cm

d. 12.70 cm

The difference between the ages of two friends is 2 years. the sum of their ages is 74 years. find the age of the older friend

2) Simplify - 2 (x + 4) + 5x + 10

A plumber loads his truck each morning with faucets that will be needed for the service calls and other emergency calls that come in that day.

the length if a ribbon is 3/4 meter. sun yi needs pieces measuring 1/3 meter for an art project. what is the greatest number of pieces measuring 1/3 meter that can be cut from the ribbon.

Rebecca knows there are 4 quarts in a gallon. She knows that a large drum holds 5 gallons. How many quarts will the drum hold?

Lorelei tosses a coin 4 times. What is the probability of tossing four heads? Express as a percent. Round to the nearest tenth if necessary

M=-2 b = (0,4) find the equation of the line with the given slope and intercept

Derek states that the expression 4 (a+6) is equivalent to the expression 20+4a+4. Is Derek correct? show the proof that Derek is right or wrong! Explain how you determined whether or not the two expressions were equivalent

The graph shows the function f (x) = 3^x What is the value of x when f (x) = 9? A:3 B:1 C:0 D:2

21 is what percent less than 35?