Answer:
63 metres
Step-by-step explanation:
Distance covered in 1 second = 3 m
Time taken =21 sec
Her position = 3 x 21 m = 63 metres
Answer:
A and E
When doing problems like these it is easier just to see what numbers are divisbale by the ration.
Example:
A: 21/30
21 is divisable by 7 and 30 is divisbale by 10
E: 35/50
35 is divisable by 7 and 50 is divisbale by 10
Answer:
See below.
Step-by-step explanation:
(4x^2-3x^3)+(2x^2+4x^3)
6x^2-x^3
(-8x^2-2x+7)+(x^2-3x+2)
-7x^2-5x+9
-hope it helps