∠A and ∠ B ∠B are vertical angles. If m ∠ A = ( 2 x + 7 ) ∘ ∠A=(2x+7) ∘ and m ∠ B = ( 5 x + 16 ) ∘ ∠B=(5x+16) ∘ , then find the measure of ∠ B ∠B.

Multiply. −2x(6x4−7x2+x−5) express the answer in standard form. enter your answer in the box.

Determine whether the samples are independent or dependent. upper a data set includes the morning and evening temperature for the lasta data set includes the morning and evening temperature for the last 90 days.90 days.

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?