What is the length of the diagonal of the screen, in feet?

If the measure of angle 1 is 110 degrees and the measure of angle 3 is (2 x+10 degree), what is the value of x?

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.