Two trains, Train A and Train B, weigh a total of 312 tons. Train A is heavier than Train B. The difference of their weights is 170. What is the weight of Train A?

Which expressions are polynomials a. - 7x^2 + 5/3x b. 6x^2 + 5x c. x^2 + 5x^1/5 d. - x^2 + 5x

In order to double the carpeted area in an office lobby, a decorator adds a strip of carpet on all 4 sides of a 4 yd by 6 yd rectangle that is now carpeted. How wide is the strip?

Factoring expression 1/6 (x-3)

Russia's sister gives him two packs of baseball cards per month each pack has 11 card she gave him three extra packs for his birthday how many cards does Richard get in a year

X^2+4x=0 Identify what the solution is and if it's no real solution or if it's 1 real solution or if it's 2real solution

What does rate of change mean

Perform the indicated operation and simplify. (9x + 7) + (5x + 8)

Find two positive integers such that their difference is - 10

Is it true that if everyone tries to save during a recession, aggregate demand will fall and the population's total savings will be lower?

If 10% of your english class received an A, how many students were in your english class if 2 students earned an A for the semester?