What is 643 = 4 x 160 + n

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

The trigonometric ratios sine and secant are reciprocals of each other

With this question substitute t=3 and t=5 to determine if the two expressions are equivalent. 4(t + 3) 4t+12 which statements are true? check all that apply. a. the value of both expressions when t =5 is 32. b. the two expressions are not equivalent. c. the value of both expressions when t=3 is 15. d. the value of both expressions when t=5 is 23. e. the two expressions are equivalent. f. the value of both expressions when t=3 is 24.