6a = 36
a = 6
Not 100% sure what this means, but:
2ft : 9miles = 4ft : --- miles
x^2 - 8x + 5 = 0
x^2 - 8x + (8/2)^2 = (8/2)^2 -5
(x - 4)^2 = 16 - 5
(x - 4)^2 = 11
(x - a)^2 - b = (x - 4)^2 -11
This should be pretty simple... but anyways:
16 x 15 x 40 = 240 x 40 = 9600
(X - 5) + (X/2) + 6 = 13
(X - 5) + (X/2) = 7
X + (X/2) = 12
X = 8
3 : 4 : 6 ratio
The average of his grades so far is: 77%
C grade: 75%-80%
Im not sure what "what grade would he need..." means, so I am guessing you mean percentages. Just test each of the integer degrees from there and you will get the span of percentages that will work to get him a C.
P(3) = 3^3 + 2(3^2) - 5(3) + 4
P(3) = 9 + 18 - 15 + 4
P(3) = 16
Wow thank you so much! I posted this question before and some random guest answered incorrectly, without any work either. So this helped me so much thanks!
2, 3, 5, x, 2x creates the largest median no matter what. x can be any integer you want it to be, but the median will always be 5.
+241 