Which equation is an equation of a circle with a radius of 10cm and center at (-3,6)
(x-3)^2+(y+6)^2=100
(x-3)^2+(y+6)^2=20
(x+3)^2+(y-6)^2=20
(x+3)^2+(y-6)^2=100

What is sin 7x/4 ? i need on this urgent trig

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

On this question. a hypothermia occurs when a person's body temperature drops below 95 degrees fahrenheit. write and solve an inequality that describes how much lower the body temperature of a person with hypothermia will be than the body temperature of a person with a normal temperature of 98.6 degrees fahrenheit