Answer:
x = 44/19, y = 33/20
Step-by-step explanation:
Multiply the first eq by 18, to get:
90/y - 36/x = 39
so 36/x = 90/y - 39
in this form we can plug it into the second eq:
90/y - 39 - 24/y = 1 =>
66/y = 40 =>
y = 66/40 = 33/20
Fill that in the first:
100/33 - 2/x = 13/6 =>
200/66 - 143/66 = 2/x =>
57/66 = 2/x =>
57x = 2*66
x = 132/57 = 44/19
To be a quadratic equation, the first number has to be rasied by the power of 2.
The answer would be c(x) = -8x^2 + 3x-5
Answer:
1/9
Step-by-step explanation:
243/729 to it's equivalent fraction is
243/729 divide numerator and the denominator by 3 = 81/243
81/243 divide numerator and denominator by 3 =27/81
27/81 divide both numerator and denominator by 3 =9/81
9/81 divide both numerator and denominator by 9 =1/9
answer = 1/9
Therefore, 243/729 reduced to it's equivalent fraction is = 1/9
If order mattered, then there would be 6*5*4*3 = 30*12 = 360 different ways to form the committee. However, no single member outranks the other. Each member has equal ranking. So order does not matter.
Since order does not matter, we must consider all of the ways to arrange a single group of 4 people. That is 4! = 4*3*2*1 = 24 ways. We overcount by a factor of 24 when order doesn't matter which is why we divide the previous result (360) by 24 to get 360/24 = 15
Answer: 15
Note: you can use the combination formula n C r = (n!)/(r!*(n-r)!) with n = 6 and r = 4 to get the same answer
Answer:
C
Step-by-step explanation:
Because if you do the multiplication then you would know that it was c