Which expression is equivalent to the given expression? 13(x – 21) a. 13x – 21 b. 13x – 34 c. 13x – 13 • 21 d. 13 – 21x

Plzzz maths ! quadratic sequences=an^2+c 1) 11,17,27,41,59 2) 7,16,31,52,79 3) 6,18,38,66,102 4) 0,9,24,45,72 5) 0,12,32,60,96

(urgent ) use pi 3.14 to estimate the circumference of the circle to the nearest hundredth middle is 4in (urgent )

What is the perimeter of square abcd? units units 28 units 37 units