Use the distributive property to write the following expression without parentheses. -3/5(5x-15y)

Can any one me with the answers to these questions asap?

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.

Askateboard ramp is in the shape of a right triangle what is the height of the ramp