A, b€ Q then (a×b) € 2) a, b€ Q then ( a-b) €
3) a, b€ Q then ( a/b ) €
4) a, b € Q then ( a+b) € ​

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

If my mom gets $13.05 an hour, and she works from 3: 30 to 10: 45 in the morning, how much money does my mom make?

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.