There are 10 boys and 20 girls in mrs brook's class.
mrs brook gave all the class a test.
the mean mark for all the class is 60
the mean mark for the girls is 56.
work out the mean mark for the boys.

In stepmber, daniel and justin opened a business. during their first three months of business, their average monthly profit was $51. if during their first month, they lost $29, and during their second month, they gained $115, what was their profit or loss for their third plzzz i will give you 299 points

Shape a is congruent to shape , as shown by a reflection across the y-axis and then a translation down units. shape b is congruent to shape , as shown by a reflection across the y-axis and then a translation down units.

Find the slope of the line that passes through the points (-2, 4) and (-5, -6). -2/7 10/3 -2/3