Hello
To find an equal ratio, you can either multiply or divide each term in the ratio by the same number (but not zero). For example, if we divide both terms in the ratio 3:6 by the number three, then we get the equal ratio, 1:2.
Distance formula : d = sqrt (x2 - x1)^2 + (y2 - y1)^2
(-5,8)(10,-7)
d = sqrt (10 - (-5)^2 + (-7 - 8)^2
d = sqrt (10 + 5)^2 + (- 15^2)
d = sqrt (15^2) + (-15^2)
d = sqrt 225 + 225
d = sqrt 450
d = 21.21
All you have to do for this is follow the midpoint formula.
Let me know if the picture is unclear and I'll type it out for you.
The answer would be 16 because 40 divided by 5 is 8 and 8 times 2 is sixteen so it would be 16
5 divide by 30 equals 6.12 minus 6 equals 6 so she has to make at least 6 pies.