A = 1/2h(B+b); A=77,B=10, b=1 I need help please and thank you

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

The length of triangle base is 26. a line, which is parallel to the base divides the triangle into two equal area parts. find the length of the segment between triangle legs.

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?