Triple of a number x decreased by one

I purchased the red and green mm's for holidays. There were 1800 mm's in the bag. Surprisingly, the ratio of red mm's to green mm's was 4 to 5. How many less red mm'swere there in the bag

How do u multiply 3 by 3 digits

What are the solutions of (x+1) ^2-36=0

How to distribute and combine like terms?

Pam's age plus Tom's age is 65. Twice Pam's age is equal to 130 minus twice Tom's age. How old are they?

Riley's family is putting a rectangular pool in his backyard. The dimensions of the pool will be 12 ft. by 24 ft. by 5 ft. The contractor building the pool needs to know how much lining he needs before starting to pour the concrete.

Find the x and y intercepts of the graph of the equation x^2 + (y-1) ^2=1

Jennifer prepared 28 kilograms of dough after working 4 hours. How much dough can Jennifer prepare if she works for 6 hours? Assume the relationship is directly proportional.

Division and the distributive property 81: 3

Factor completely. tr-7r+tn-7n