The black triangles are similar. Identify the type of segment shown in blue and find the value of the variable

Write a numerical expression that satisfies all of the following conditions. 1.)the only number used in the expression is 5 2.)at least one exponent other than 1 is used 3.)when the expression is evaluated, the answer is greater than 40 and less than 50

2x + 1 < 5 solve the following inequality. then place the correct number in the box provided.

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)