Six and fifty-three hundredths as a decimal-

Yes, I'm D-U-M-B!

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.

Solve the triangle. a = 21°, c = 105°, c = 5

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?