Some penguins were playing on the ice. Ten dove into the water. A few seconds later, six jumped back onto the ice. Now there are 12 penguins on the ice. How many penguins were on the ice to start?

16

Step-by-step explanation:

if ten dove int the water and 6 came back up there would be 4 left in the water.If there are now 12 penguins on the ice then there were 16 penguins to begin with.

9.55 degrees.

step-by-step explanation:

the given angle is

1 cycle is equal to 2π radians. so 4π will be equal to two cycles.

5.166667π-4π = 1.166667π

hence, this angle goes a little more than negative x axis.

1.166667π-π= 0.166667π

hence, the reference angle is 0.166667π radians.

1 radian = 57.2958 degrees

now, in degrees, this should be equals to 9.55 degrees.

d

gimmee one of those gold crowns!

~coco