If u multiply the first equation by -4, u get -2x - y = -20
and when u add the 2 equations..
-2x - y = -20
2x + 3/8y = 5
-----------------
0 - 5/8y = -15.....u notice that the x terms r eliminated.
9/2
18/4
36/8
4 1/2 in an improper fraction is 9/2 so all i did was add 9/2+9/2 and got 18/4 hen i did that again with 18/4 and got 36/8 and then you could also do the same with 36/8 too.
hope this made sense
f(x) = \(\frac{1}{20}\) for 0 ≤ x ≤ 20. x = a real number. The graph of
f(x) = \(\frac{1}{20}\) is a horizontal line. However, since 0 ≤ x ≤ 20, f(x) is restricted to the portion between x = 0 and x = 20, inclusive.
This shows the graph of the function f(x) = 1/20. A horiztonal line ranges from the point (0, 1/20) to the point (20, 1/20). A vertical line extends from the x-axis to the end of the line at point (20, 1/20) creating a rectangle.
f(x) = \(\frac{1}{20}\)for 0 ≤ x ≤ 20.
The graph of f(x) = \(\frac{1}{20}\) is a horizontal line segment when 0 ≤ x ≤ 20.
The area between f(x) = \(\frac{1}{20}\) where 0 ≤ x ≤ 20 and the x-axis is the area of a rectangle with base = 20 and height = \(\frac{1}{20}\).
\(\text{AREA}=20\left(\frac{1}{20}\right)=1\)
<span />The correct answer is "D".
Hope this helps!
