How do you simplify 12/13 in fractions

Find the value of the expression (2x - 12) + (1/2xy - 10) for x = 8 and y = 2

Given the formula A=3.14ab, solve for b.

ABC and DEF are supplementary. If m ABC = 2y and mZDEF = 3y - 5, find y.

Julie has a data set for which the mean is 41. Each value of the data set is multiplied by 7. What is the mean for the new data set?

Cynthia has a cup full of dimes and quarters that she would like to put in her savings account. When she takes the cup to the bank, the banker tells Cynthia that the 386 coins in the cup are worth $58.10.

125 A football stadium holds 55,296 people. The seating is divided into 36 section Part A: There is an equal number of seats in each section. How many seats are in each section?

Taylor Scuff leased a new sports car and is certain she can keep under the 12,000 miles allowed a year. The $2,200 due at signing includes the title and license fee. Her monthly lease payments are $700 a month.

If you toss an unfair coin such that p (heads) = 0.45, what is the probability that you get your first heads on the 6th toss?

Adam worked 8 hours on Monday, 41⁄4 hours on Tuesday, 61⁄8 hours on Wednesday, 71⁄4 hours on Thursday, and 81⁄8 hours on Friday. Calculate the total number of hours Adam worked for the week. A. 323⁄4 B. 331⁄8 C. 333⁄4 D. 35

Find the ninth term of the geometric sequence, given the first term and common ratio. a1=1 and r=-1/3