Which type of quadrilateral has two pairs of parallel sides and four congruent sides?
a. trapezium
b. kite
c. trapezoid
d. rhombus

Two blends of tea are mixed to make a blend that will be sold at the fair. black tea sells for $2.20 per pound and orange pekoe tea sells for $3.00 per pound. how much of each should be used to obtain a 4lb blend selling for $2.50 per pound?

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Four quarts of a latex enamel paint will cover about 200 square feet of wall surface. how many quarts are needed to cover 98 square feet of kitchen wall and 52 square feet of bathroom wall