Answer: 1/2(x+12)
Step-by-step explanation: Sum is adding.
Answer:
A right angle measures 90°.
A supplementary angle is twice the measure of a complementary angle.
Step-by-step explanation:
15/60 is the Awnser. Cuz 3•5 is 15 and 10•6 is 60
Answer:
225 square feet
Step-by-step explanation:
the base of the pyramid would be 76 ft², since 12*6=72. Then you get the surface area of the sides. 2 of the sides would be 48 ft², since (12*8)/2=48. The other 2 sides would be 28.5 ft², since (6*9.5)/2-28.5. Then you just add the surface areas of all the sides; 76+48+48+28.5+28.5 to get 225.
Hope this helps! :)
