Answer:
30 X .8=24 30-24=6 bill got 6 questions wrong
Let the required number be x, then
x + 3,080 = 5,082
x = 5,082 - 3,080
x = 2,002
Its D becuase of math thing :) its D
It is 105 degrees because the area of a triangle always adds up to 180
To factor quadratic equations of the form ax^2+bx+c=y, you must find two values, j and k, which satisfy two conditions.
jk=ac and j+k=b
The you replace the single linear term bx with jx and kx. Finally then you factor the first pair of terms and the second pair of terms. In this problem...
2k^2-5k-18=0
2k^2+4k-9k-18=0
2k(k+2)-9(k+2)=0
(2k-9)(k+2)=0
so k=-2 and 9/2
k=(-2, 4.5)
