Find the inverses of the following matrices mod n. write the in the inverse matrix as nonnegative integers less than n. entries 1 3) mod 5 (b) 1 3 mod 29 (c)9 15 17 (0) 4 3 197 62mod 841 40 mod 841 (e) 603 21 in exercises 3-5, find all solutions () modulo n, writing r and y as d) o 21 nonnegative integers less than n r +4y 1 mod 9 5z +8y1 mod 9 5x + 7y1 mod 9 (b) (d) 5x + 8y 2 mod 9

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Circle d circumscribes abc and abe. which statements about the triangles are true? statement i: the perpendicular bisectors of abc intersect at the same point as those of abe. statement ii: the distance from c to d is the same as the distance from d to e. statement iii: bisects cde. statement iv: the angle bisectors of abc intersect at the same point as those of abe. a. i only b. i and ii c. ii and iv d. i and iii e. iii and iv

With these 5 geometry questions! pls 1.)quadrilateral abcd is inscribed in this circle. what is the measure of ∠a ? enter your answer in the box.°2.)quadrilateral abcd is inscribed in a circle. what is the measure of angle a? enter your answer in the box. m∠a= 3.)quadrilateral abcd is inscribed in this circle. what is the measure of angle b? enter your answer in the box. m∠b= °4.)quadrilateral abcd is inscribed in this circle. what is the measure of angle a? enter your answer in the box.°5.) quadrilateral abcd is inscribed in this circle. what is the measure of angle c? enter your answer in the box.°