In trapezoid ABCD, AC is a diagonal and ∠ABC≅∠ACD. Find AC if the lengths of the bases BC and AD are 12m and 27m respectively.

192 is what percent of 128

Is the fractions 3/4 and 75/100 equal?

Which number would not be in scientific notation? 4.5 x 10^4 6 x 10^7 12.5 x 10^3 4.2 x 10^-8 2.355 x 10 ^5 0.45 x 10^3

Write this as a algebraic expression (the quotient of 4 and a number)

1. A class of 16 students contains five Math majors, eight Engineering majors and three Physics majors. A group of four students from the class is to be selected to form a team for an academic competition.

What is the measure of the angle whose supplement is four times it's compliment?

We were assigned this worksheet today and I don't really understand it.

A shipping company damaged 15 packages. Each package was valued at $175.50. Which expression represents this situation? A. 15 x (-$175.50) B. 15 + $175.50 C. 15 - $175.50 D. 15 : (-$175.50)

find the perimeter of the quadrilateral, 31 + (4x^2+8x) + (3x^2-5x+20) + (7x+30). if x=2, what is the perimeter

Which is the correct description of how to find the voume of a cylinder? a Find the circumference of the base and multiply by the height of the cylinder b Find the area of the base and multiply by the height of the cylinder c Square the area of the