659. What is the value of the expression ab- 30 when a =-4, b = 5 and c=-3? a. -29 b. -26 C. -11 d. 20 please help me.

Prove that quadrilateral is a rhombus.

How is the equation of this circle written in standard form? x2 + y2 - 6x + 14y = 142 a) (x - 3)2 + (y + 7)2 = 200 b) (x+ 3)2 + (y - 7)2 = 200 (x - 6)2 + (y + 14)2 = 142 d) (x+6)2 + (y- 14)2 = 142

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog