The expression 12+x+412+x+4 represents the perimeter of a triangle. Simplify the expression. I am stuck.

If a gambler rolls two dice amd gets the sum of 5 he wins $30. If he gets a sum of 3 he wins $50. The cost of playing is $15. What is the expectation of this game? A. $0.83 B. - $3.89 C. - $8.89 D. - $12.50

Jesse used 5 gallons of gasoline to drive 50 miles. How much gasoline will he need to travel 170 miles?

A boat goes from 84 km/h to 42 km/h in 7 seconds. What is the deceleration?

The cost of producing 4 metal units is $204 80. The cost of producing 8 units is $209 60. What is the cost to produce 12 units?

There are 420 books on the bookshelf with 7 shelves each shelf has the same number of books How many books are on 4 shelves A 28 B 60 C 120 D 240

12 red markers to 12 blue markers

Cathy volunteered to collect cans for a school project. cathy collected 125 cans in 5 days. there were 6 volunteers including cathy who each collected about the same number of cans. about how many cans did they collect?

Two friends share 7 cookies equally. How many cookies does each friend get?

Ba=bc-2d. Express b in terms of c and d

What is the equation of the following line (1,9) (0,0)