x = amount at 15%
90-x = amount of 55%
0.15x + 0.55(90-x) = 0.47(90)
0.15x +49.5 - 0.55x = 42.3
49.5 - 0.40x = 42.3
-0.40x = -7.2
x = -7.2 / -0.4 = 18 kg of 15% copper
90-18 = 72 kg of 55% copper
7-6/7-5= 1/2= 0.50.
Your answer could be written as 1/2 or 0.50
I'm pretty sure u clicked the right one!
Answer:
30m
Step-by-step explanation:
To find area of triangle you do half the base times the height. The base is 5 so half of that is 2.5. The height is 12. So, 12 times 2.5 equals 30.
Hope I helped!! :)
Sorry if it's wrong! :(
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Answer:
The values of k are all real numbers greater than 3
Step-by-step explanation:
we have
Solve for k
Divide 12 by 3
Divide by 4 both sides
The solution is the interval ------> (3,∞)
All real numbers greater than 3