Overall, the goal is to find the value of x and then use this and the given total to find the percentage of x. First, to do this, we must set up our equations based on the given information.
x + y + z = 510
z = (3/2)y
y = 3x
Now, we can begin to solve with substitution. The ultimate goal is to get the first equation to be regarding one variable and them work backwards using that found value.
Substitute the 3rd equation into the second.
z = (3/2)(3x) ----> Simply
z = (9/2)x
Now, when we plug in z and y into the first equation, only x will be present.
x + (3x) + (9/2)x = 510 ---> Combine like terms.
4x + (9/2)x = 510 ---> Get a common denominator.
(8/2)x + (9/2)x = 510
(17/2)x = 510 -----> Multiply both sides by 2/17
Now, if you understand what you are looking at, you know that you just found your answer which is 2/17 because you are about to multiply that by the total.
2/17 = .12 × 100 = 12%
If you did not know that, you can continue solving and then find the answer using part over whole or the total books of school x divided by the total books from all schools. You will get the same answer!
x = (2/17)×510
x = 60
60/510 = .12 × 100 = 12%
I hope this helps!
H=-3 and N=3 so it would be 0
Answer: equilateral
Step-by-step explanation:
Answer:
Step-by-step explanation:
Yes it is, unless you were supposed to add the states that the chemicals are in (which ( doubt)).
The left Hand Side
2 AgNO3
there are 2 Ags
The 2 also affects the NO3 so there are two NO3s
MgCl2
There is one Mg
There are 2 Cls
====================
Right hand side
2Ag Cl
2 Ags
and the 2 also affects the Cl so there are 2 Cls
Mg(NO3)2
There is one Mg [just as there is on the left]
There are 2 NO3s just as there are on the left.
