Triangle abc has the vertices a (0,10) b (4,10) c( -2,4). find the orthocenter of abc. a -2,-12 b 2,-12 c 12,-2 d-12,2

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums. what is the probability that the applicant who gets the job plays drums or guitar?

M∠cbd=4x+52∘ m∠abc=8x−10∘\qquad m \angle abc = 8x - 10^\circm∠abc=8x−10∘ find m∠cbdm\angle cbdm∠cbd: