If a −

1

= 3, find the value of

2 +

1

2​

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?