For positive acute angles A and B, it is known that tan A = 4/3 and sin B = 45/53. find the value of cos( A - B ) in simplest form.

Can someone pls ! pls answer all. no explanation needed..

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189