8x-5y=11
4x-3y=5
solution;
4(8x-5y=11)
8(4x-3y=5)
it becomes, [32x-20y=44
- [32x-24y=40
(32x-32x)+(20y--24y)=44-40
it becomes 20y+22y=4
44y=4, dividing by 44 on both sides, it becomes y=1/11
thus, y=1/11 but 4x-3y=5
4x=5+3y
4x=5+3/11
4x=55/11+3/11
4x=58/11, cross multiplying, it becomes. 44x=58
x=58/44
x=29/22
therefore, x=29/22 and y=1/11
We know that 24 is 160% more than some recommended number, let's call it "x." This means 1.6 times the recommended number equals 24. Therefore, all we need to do is solve for x.
Make sense?
-11x² + 2x = 10
-11x² + 2x - 10 = 10 - 10
-11x² + 2x - 10 = 0
x = <u>-(2) +/- √((2)² - 4(-11)(-10))</u>
2(-11)
x = <u>-2 +/- √(4 - 440)</u>
-22
x = <u>-2 +/- √(-436)
</u> -22<u>
</u>x = <u>-2 +/- 2i√(109)
</u> -22
x = <u>-2 + 2i√(109</u>) x = <u>-2 - 2i√(109)</u>
-22 -22
x = ¹/₁₁ - ¹/₁₁i√(109) x = ¹/₁₁ + ¹/₁₁i√(109)
<u />
A. 7
7 is far away from the rest of the numbers, so it is an outlier.
The correct answer would be 0