400000 10 to the fifth power is 100000, so when you switch out the 1 for a 4, it become 400000.
its the first one 6k - 5
if u were to distribute u need to remember that 6 is negative so it changes -k to a positive 6k and then you would time 4 by -6 which would be -24 but u would just write it like 19 + 6k - 24. then u would add 19 to both sides by 19 which would be like adding 19 to -24 which would equal to -5 so it would equal to 6k - 5.
hope I explained the steps well enough for you.
Okay so first u would do 37.5/100 * x/87.5
cross multiply get a result of 3.2815
add that to 8.75
end up with 12.0315
EXPLANATION
If the volume of the cone is of V=448m^3 and it is dilated by a scale factor of 1/4, the resulting volume would be as shown as follows:
The 1st question it’s (0,4) and (0,-8). The second is a quadrilateral