Translate the following sentence into an equation. then solve the equation the difference of number and 7 is 21. a.21- 7 = n; n=14 b. n + 7 = 21 ; n = 14 c. n - 7 = 21 ; n =28 d.21 - n = 7; n = 14

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line