Need i don't understand how to get this.. add explanation. 50 !

Step-by-step explanation:

i believe it's a ratio question? R to D:D to P is in the same ratio as R to C:C to A

so 15+42 = 67

(67÷15)x100 will give you what percent D to P is of R to P this value is also the percentage of length that A to C is out of A to R.

Use this to say 10 units is (the worked out) percent of A to R, find 100 percent of A to R

then find the value of R TO C (X) by taking the original percentage and minusing that from 100, then use this to find the value of C to R due to its percent of A to R

sorry if it's badly worded :)

step-by-step explanation:

in which figure is point g a centroid

the opening of this porabola is facing up

step-by-step explanation: