The -2/5 means we go to the left 2/5 of a full unit. So we take 2 small little steps (going over 2 little tickmarks), then we move 4 small steps to the right due to the +4/5 portion. Ultimately, we end up at 2/5 as the answer

So -2/5 + 4/5 = 2/5

This can be thought of as -2+4 = 2, then you just stick 5 in the denominator for each term.

7 0

4 years ago

Find the MIDPOINT of segment CD, given that C is (3,-5) and D is (7.9).

quester [9]

Answer:

(5, 2)

Step-by-step explanation:

$Midpoint \: of \: segment \: CD \\\\ = \bigg( \frac{ 3+ 7 }{2}, \: \: \frac{-5+9}{2} \bigg) \\ \\ = \bigg( \frac{ 10 }{2}, \: \: \frac{4}{2} \bigg) \\ \\ = ( 5, \: \: 2)$

4 0

4 years ago

arper went into a movie theater and bought 10 bags of popcorn and 6 drinks, costing a total of $79. Damian went into the same mo

boyakko [2]

Answer:

Popcorn = p

drinks = d

Arper:

10p + 6d = 79

Damian:

3p + 5d = 36.5

7 0

3 years ago