Can someone answer these two problems??
1 answer:
9514 1404 393
Answer:
B
Step-by-step explanation:
The given equation is in slope-intercept form:
y = mx + b
where the slope is m = -3 and the y-intercept is b = +2.
So, the graph will have a slope of ...
"rise"/"run" = -3 = -3/1
and will cross the y-axis at y=2.
Graphs A and B cross the y-axis in the right place, but only Graph B has a negative "rise" a x increases.
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So... let's change the concentration percentage to decimal format. .. so 40% is just 4/100 or 0.4 and so on.
so... whatever "x" and "y" may be, we know the must add up to 6 liters.
and whatever 0.4x and 0.8y are, we also know, they must add up to a 3 of concentrated amount.
thus
solve for "x", to see how much of the 40% solution will be needed.
what about "y"? well, y = 6 - x.
so... whatever "x" and "y" may be, we know the must add up to 6 liters.
and whatever 0.4x and 0.8y are, we also know, they must add up to a 3 of concentrated amount.
thus
solve for "x", to see how much of the 40% solution will be needed.
what about "y"? well, y = 6 - x.