Let X & Y be the two integers
X+Y=18 Y = 18-X
XY = 80
We can substitute 18-X for Y in the equation XY = 80
X(18-X) = 80
Distributing
18X - X2 = 80
Subtract 80 from both sides so that the equation is equal to 0
-X2 + 18X - 80 = 0
Multiply (or divide by -1 so that the leading coefficient is positive, not negative)
X2 - 18X + 80 = 0
We can factor this quadratic
(X-10)(X-8) = 0
Setting each factor equal to 0 we can solve for X.
X-10 = 0 X-8 = 0
X = 10 X = 8
The two integers are 8 and 10.Answer:
Step-by-step explanation:
11 because 30 - 6.5 equals 23.5 and if she can use all 23.5$ on tomato’s you divide by 2 and it equals 11.75. But she can’t go over 30 so you round it down to 11 pounds
Answer: The website I'm using is called Desmos.
Step-by-step explanation:
This is the correct graph.
1. Locate the y-intercept on the graph and plot the point.
2. From this point, use the slope to find a second point and plot it.
3. Draw the line that connects the two points.
Answer:
f(x)=7x−4 f ( x ) = 7 x - 4. Replace f(x) f ( x ) with y y . y=7x−4 y = 7 x - 4. Interchange the variables. x=7y−4 x = 7 y - 4. Solve for y y .
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