Which sentence does not belong

a. x+12=12+x

b. 7h=h•7

c. 1+a=a+1

d. n:2=2:n

Janet puts $500 in her bank account, but she needs to pay for her son's tutor each week. The tutor charges $40 each week.

I need a real world problem involving percents greater than 100

my ones digit is 0. my tens digit is 7 more than my ones digit. my hundreds digit is 6 more than my ones digit. i am the number

To solve for 10t = - 30 + 5t, first subtract? from both sides.

Gcf of 18m x 18m and 7m

Luke rides his bike 20 miles in 4 hours. If he rides at a constant speed, select the answers here that are equivalent ratios to the speed he rides. A: 30 miles in 7hrs B: 25 miles in 6 hours C: 10 miles in 1 hr D. 15 miles in 3 hrs

The chess club is selling drinks during the tract and field event. The club purchases water, juice boxes, and pouches of lemonade for the event. They spent $138.52 on juices boxes and $75.00 on lemonade. The club purchased three cases of water.

How much is 18 tens + 13 tens

The sugar company will choose from two companies to transport its sugar to market. The first company charges 5197 to rent trucks plus an additional fee of 175.75 for each ton of sugar.

At the start of his diet, Kerrin weighed 14 stone 8 pounds. Three months later he weighed 13 stone 6 pounds. There are 14 pounds in a stone. Calculate the reduction in Kerrin's weight as a percentage of his initial weight, correct to 1 d. p.