A parallelogram with perpendicular diagonals is a

3. At a zoo, the lion pen has a ring-shaped sidewalk around it. The outer edge of the sidewalk is a circle with a radius of 11 m. The inner edge of the sidewalk is a circle with a radius of 9 m.

Is 5x-14=8x+4 a no solutions or what?

2log x-log (8x-160) - 1=0

How do you write a unit rate for this situation? $28 saved in 4 weeks

What is 3.868x10^9 in standard form

What is another term for "unit rate"? what does the unit rate tell us about a situation?

6*4+2 * 3/9 What does this equal

Every sixth visitor to an animal gets a free animal calendar. every twentieth visitor gets a free animal toy. which visitor each day will be the first one to get both the calendar and the animal toy?

What is the measure of the angle between a perpendicular bisector and the segment it is bisecting? A. 180° B. 90° C. 45° D. 0°

How many sides does a regular polygon have that has an angle of rotation equal to 20 degrees.