Idk but i’m just doing this to “answer a question”
4/7=28/(x+18)
4/7 =28/x+18
-18 | -18
|
__________
-17 2/7=28/x
*28 | *28
|
__________
-484 = x
Step-by-step explanation:
1) see the attached picture;
2) 120+80=200 (persons).
PS. change the design according to local requirements.
Answer:
-4y = x², or y = - x²/4, or y = -(1/4)x²
Step-by-step explanation:
Because the focus is beneath the directrix, this vertical parabola opens down. The general formula is 4py = x².
Because the distance between focus and directrix is 2 units, p = -1 here. The negative sign shows that the parabola opens down.
4py = x² becomes 4(-1)y = x², or -4y = x², or y = - x²/4
3.06; lining it up 4*9= 36, write the 6 and carry the 3, then 9*3= 27, add 3 and you get 30. Since in your original problem you have two places behind the decimal point you do the same with your answer so that 306 turns into 3.06
