Answer:
6p² + 7m and 63m + 81
Step-by-step explanation:
all you need to do for the first one is add the P and the M together and the - one M then for the second one you just need to multiply 21 and 27 by 3
Answer:
30
Step-by-step explanation:
60% of 30 students is 18 girls
and
both have a common denominator, so you can combine them into a single fraction:

You cannot simplify this fraction further:
- - - - - - - - - - - - - - - - - - - -
Answer:

- - - - - - - - - - - - - - - - - - - - -
Let's put this on the usual Cartesian grid just so we can talk about it without drawing a picture. We'll use map conventions, right is east, up is north.
The ball starts at (0,0). 10.3 feet northwest means we have an isosceles right triangle whose diagonal is 10.3 feet. It's isosceles because northwest means equal parts north and west.
The sides of these triangles are in ratio

so the coordinates after the first putt are

The negative sign indicates west, which doesn't really matter for this problem. The distance from the origin to this point is 10.3 as required.
Now a second putt of 3.8 feet north puts us at

The squared distance to the origin is exactly

A little calculator work tells us

Third choice.