Kaci bought a birthday cake, like the one shown below, for her mother. Note: Figure is not drawn to scale. If a = 5 inches, b = 5 inches, c = 9 inches, and d = 3 inches, what is the volume of the cake? A. 260 cubic inches B. 270 cubic inches C. 210 cubic inches D. 150 cubic inches Reset

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle

To find the answer you need to plug in each individual ordered pair matching up the number with the variable. the answer is (6,2) since if you plug it in the equation becomes 2 = 6 - 4, which ends up 2 = 2. since the final equation is true, then (6,2) must be the answer.