Me! which of the following options is a pythagorean identity? a. (sin(x) - cos(x))^2 = 1 + 2sin(x)cos(x) b. (sin(x) - cos (x))^2 = 1 c. (sin(x) - cos (x))^2 = 1 - 2sin(x)cos(x) d. sin^2(x) - cos^2(x) = 1

Naomi’s parents want to have 50,000, saved for her college education, if they invest 20000 today and earn 7% interest compound annually, about how long will it take them to save 50 thousand

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 + 4x + 5 = 0

40 points. given: two congruent angles ∠c and ∠r are supplementary. prove: ∠r and ∠c are both right angles. it doesn't have to be exactly 10 rows. statements reasons1. 1. 2. 2. 3. 3. 4. 4. 5. 5. 6. 6. 7. 7. 8. 8. 9. 9. 10. 10.