(4x)+(x-5)=360
I have a pair of vertical angles and a right angle put together to equal 360 degrees. I have to find x

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?