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.
10/100 x 2000 = 200
2000-200 = 1800
then it decreases by 20% so
20/100 x 1800 = 360
1800-360 = 1440
im not sure about this part
25% of 2000
25/100 x 2000 = 500
so 1440 + 500 = 1940
Answer:
83°
Step-by-step explanation:
Since angle x and angle y are supplementary angles,
x + y = 180°.
Since y = 97°
x = 180° - y = 180° - 97° = 83°
Area = 1/2bh = 1/2 x 8.5 x 5.4 = 22.95 squared centimeter
3.75, 3.9, 4.256, 4.258, 4.5
