If the measure of an angle is 7x + 51 find the values of X for which the angle is a right angle

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is:

1. evaluate 8x(2)y9(-2) for x=-1 and y=2 2. simplify the equation. -() 3. simplify the expression. [tex]\frac{5}{x(-2) y9(5)}[/tex]