Darnell's Burgers cooks its burgers either well done or medium. Last night the restaurant served 15 burgers in all, 6 of which were well done. What percentage of the burgers were well done? ANSWER ASAP!​

Which statement justifies why angle ebc measures 90?

Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .

Simplify 24÷(-2)(3)+7 a. -29 b. 3 c. 11