No. y=x would mean it would either be (-2,-2) or (0,0). basically they have to be the same.
Answer:
answer (3)
Step-by-step explanation:
Well if r is lbs of raisins and w lbs of walnuts, total cost = 4r + 8w <= 15
4r + 8w.
(1) 32
(2) 16
(3) 15
(4) 22
You are not correct, the right answer should be 5-2 square root symbol. I couldn't find out how to put one there.
We need only subtract 3 units from <span>g(x)=x^2+2 to obtain the function h(x).
The correct result is h(x)=</span><span>x^2+2 -1.</span>
Answer:
- The system of equations is x + y = 85 and 7/20x+2/5y=31
- To eliminate the x-variable from the equations, you can multiply the equation with the fractions by 20 and multiply the other equation by -7.
- B-She used 60 minutes for calling and 25 minutes for data.
Step-by-step explanation:
It is always a good idea to start by defining variables in such a problem. Here, we can let x represent the number of calling minutes, and y represent the number of data minutes. The the total number of minutes used is ...
x + y = 85
The total of charges is the sum of the products of charge per minute and minutes used:
7/20x + 2/5y = 31.00
We can eliminate the x-variable in these equations by multiplying the first by -7 and the second by 20, then adding the result.
-7(x +y) +20(7/20x +2/5y) = -7(85) +20(31)
-7x -7y +7x +8y = -595 +620 . . . . eliminate parentheses
y = 25 . . . . . . . . simplify
Then the value of x is
x = 85 -y = 85 -25
x = 60
