It would be 348
as A= lw+l((w
/2)^2+h^2)^0.5+w((l
/2)^2+h^2)^0.5
where l=12, w=12, h=6
A=347.65 ~ 348
At the vertex ( minimum value in this case), x = 1 and y = -2
Vertex is (1, -2) answer
Nickels (0.05): Q + 6
Dimes (0.10): Q + 8
Quarters (0.25): Q
Nickels + Dimes + Quarters = Total
0.05(Q + 6) + 0.10(Q + 8) + 0.25(Q) = 4.70
0.05Q + 0.30 + 0.10Q + 0.80 + 0.25Q = 4.70
0.40Q + 1.10 = 4.70
0.40Q = 3.60
Q = 9
Nickels (0.05): Q + 6 = (9) + 6 = 15
Dimes (0.10): Q + 8 = (9) + 8 = 17
Answer: Nickels = 15, Dimes = 17, Quarters = 9
To get the solution, we are looking for, we need to point out what we know.
1. We assume, that the number 54 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 54 is 100%, so we can write it down as 54=100%.
4. We know, that x is 2.9% of the output value, so we can write it down as x=2.9%.
5. Now we have two simple equations:
1) 54=100%
2) x=2.9%
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
54/x=100%/2.9%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.
7. Solution for what is 2.9% of 54
54/x=100/2.9
(54/x)*x=(100/2.9)*x - we multiply both sides of the equation by x
54=34.48275862069*x - we divide both sides of the equation by (34.48275862069) to get x
54/34.48275862069=x
1.566=x
x=1.566
now we have:
2.9% of 54=1.566