What is the radius of a circle whose equation is x2 + y2 + 8x - 6y + 21 = 0? units

In triangles △ABC and △DEF, m∠A=m∠E, m∠C=m∠F, AC=6, EF=2, and AB=3.3, side DF is shorter than side BC by 3.2. Find the unknown sides of these triangles.

A recent study showed that teenagers who had night light in their rooms as babies are more likely to suffer from myopia than teenagers who had not used night lights.

New York City is building an outdoor skating rink that is circular. If the diameter of the circle is 92 meters, what is the area of the ice skating rink n square meters? Use 3.14 for pie

Item 12 a regular triangular pyramid has a base and lateral faces that are congruent equilateral triangles. it has a lateral surface area of 57 square centimeters. what is the surface area of the regular triangular pyramid?

What is the corollary to the triangle sum theorem?

Ben sat outside his school in cambridge and made a note of the colour of the first 100 cars that passed 27 of the cars were red. In britain there are around 35 million cars on the road.

If 1 6 of a gallon of milk is shared equally between 3 friends, how much mIf 1 6 of a gallon of milk is shared equally between 3 friends, how much milk will each friend getilk will each friend get

There are 276 plan in the flower garden what is 276 rounded to the nearest ten?

13 out of 60 people surveyed what angle in a pie chart would you use?

A toy company produces rubber balls that have a radius of 1.7 cm. A sphere has a radius of 1.7 centimeters. What is the volume of one rubber ball? Round to the nearest hundredth of a centimeter.