The sum for three numbers is 57 the second number is 2x the first the third number is 18 less than the second what is the third number

Can (3,5 and square root 34) be sides on a right triangle?

What term best describes a line ans a point that lie in the same plane

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6