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Answer:</h2><h2>
Misty needs 27.13 ounces of 72% acid and 57.87% of 25% acid solution.</h2>
Step-by-step explanation:
85 ounces of 40% acid solution = 85 (0.4) = 34
Also, x + y = 85 ... (1)
0.72x + 0.25y = 34
72x + 25y = 3400 ...(2)
multiply eq (1) by 25, we get 25x + 25y = 2125 ... (3)
subtracting eq(2) and (3), we get 47x = 1275
x = 27.13 substitute in eq(1), we get
y = 57.87
Misty needs 27.13 ounces of 72% acid and 57.87% of 25% acid solution.
The 2 is in the x place.
Let's substitute 2 for x in our equation.
2(2)-5y=11
Now, we can solve for y. (the other coordinate)
4-5y=11
Subtract 4 from each side.
-5y=7
Divide by -5.
y = -7/5 or -1 2/5 or -1.4
Based off of what I can see in the photo (its too blurry to know for sure) and what I think you're asking:
The angle of a triangle always adds up to 360degrees, so base it on that and the acute and obtuse angles and get the degrees from there, the angle would be those degrees you find or <10, 5, 4 (what I assume is a 5)
Answer: 2711×10^-10
Step-by-step explanation: