Answer:
15.
16. 10 ml of 20% saline and 40 ml of 10% saline
Step-by-step explanation:
A chemist takes x ml of 20% saline and y ml of 10% saline. In total, he takes
x + y ml that is 50 ml, so
There are 
ml of salt in x ml of 20% saline and 
ml of salt in 10% saline. There are 
ml of salt in 50 ml of 12% saline. Thus,
15. We get the system of two equations:
16. Solve this system. From the first equation:
Substitute it into the second equation:
Hello,
What do you want?
a(2)=4*a(1)==>a(1)=12/4=3
a(0)=3/4
a(n)=3/4 * 4^n (genearl term)
Answer:
12
Step-by-step explanation:
4y - 2x
= 4(7) - 2(8)
= 28 - 16
= 12
I think the answer is A because it I'm right it did double the size.
[ Answer ]
[ Explanation ]
= 6
Multiply Both Sides By 19
= 6 · 19
Simplify:
X = 114
Check Your Work:
Simplify:
= 6
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