Solving quadratic equation using the completing the square method. (a).x²+20x-12=0​

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

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:

Abcd is a square. what is the measure of angle bac