The sum of two numbers is 65. The smaller number is 15 less than the larger number. What are the numbers?

What is the smallest integer n such that n\sqrt{2} is greater than 20

Need this asap if anyone can i would be very grateful. if you could show workings that would really

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.