Help Aprecciated! What is the area of a trapezoid ABCD with bases AB and CD , if: m∠C=m∠D=60°, AB = BC = 8 cm and when
m∠C=m∠D=45°, AB=6 cm, BC=9 root 2 cm

Prove that the sum of two consecutive exponents of the number 5 is divisible by 30.if two consecutive exponents are 5n and 5n + 1, then their sum can be written as 30.

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

Complete the equation of the line through (−10,3) and (−8,−8). use exact numbers.