Asquare pyramid is made up of a base with a side length of 10 inches and faces that are triangles with a height of 12 inches. what is the surface area of the square pyramid?

a. 120 square inches
b. 125 square inches
c. 240 square inches
d. 340 square inches

Hannah is 3 years older than twice her brother joey’s age. joey is 2 years old. how old is hannah? show all of your work! the number of students is five more than seven times the number of teachers. there are 10 teachers. how many students are there? be sure to show all of your work!

Can someone explain the elimination method to me for this problem?

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary