State whether the equation is a linear equation in one variable or not. –2x(–2 – x) = x + 1

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

Okay so i didn't get this problem petro bought 8 tickets to a basketball game he paid a total of $200 write an equation to determine whether each ticket cost $26 or $28 so i didn't get this question so yeahyou have a good day.

Divide. –4.2 ÷ 6 = a –0.7 b 0.7 c –7 d 7 me