Astate department of public safety added 1313x2 + 5x miles of highway to connect cooltown and bragville. it cost the department 3x2 – 9x thousand dollars to complete each mile of interstate. which expression shows the total cost, in thousands of dollars, of creating this highway? a) x^4 + 12x^3 – 45x^2 b) x^4 – 45x^2 c) x^4 + 15x^3 – 48x^2 d) 9x^4 – 12x^3 – 45x^2

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

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.°

72 the length of a side of a triangle is 36. a line parallel to that side divides the triangle into two parts of equal area. find the length of the segment determined by the points of intersection between the line and the other two sides of the triangle.