Let the required amount of the second alloy be x, then
0.15 x 20 + 0.1x = 0.12(20 + x)
3 + 0.1x = 2.4 + 0.12x
0.12x - 0.1x = 3 - 2.4
0.02x = 0.6
x = 0.6/0.02 = 30
Therefore, to make a 12% mixture, 30 pounds of the secon mixture should be added.
Answer:
y = (1/3)x + 4
Step-by-step explanation:
Two points on this line are (0, 4) and (3, 5).
As we move from the first point to the second, x increases by 3 and y increases by 1. Thus, the slope, m, of the line is m = rise / run = 1/3.
Use the slope-intercept equation: y = mx + b.
If we use the data from the point (0, 4), we get:
4 = (1/3)(0) + b, so that b = 4. The desired equation is y = (1/3)x + 4.
Answer:
2 Apples!!!
Step-by-step explanation:
Hope this helps!!!
Answer:
, or
Step-by-step explanation:
Use the formula for area of a circle
A =
the radius is half the diameter, so divide 74 by 2 then substitute it as r
A =
multiply 37 by 37
A =
multiple 1369 by pi(3.14)
or
Answer:
(2x+2)
Step-by-step explanation: