An investment firm invested 20,000 for 1 year at a simple interest. one portion was invested at 6% and the remainder at 8%. how much money was invested at each rate of interest, if the total interest was the same as it would have been if all the money had been invested at 7%.

When a formula is solved for a particular variable, several different equivalent forms may be possible. if we solved a=1/2bh for h, one possible correct answer is h=2a/b . which one of the following is not equivalent to this? a. h= 2(a/b) b. h= 2a(1/b) c. h= a/1/2b d. h= 1/2a/b

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?

An angle that measures between 90 and 180° is called a(,