Answer:
Step-by-step explanation:
A.27 (aka 3x3x3)
B.7x7x7x7
C4x4x4x4x4x4x4
D.5x5x5x5x5x5
E.9x9x9
F.8x8
G.12x12x12
H.1x1x1x1x1x1x1x1x1x1x1x1
I.8x8x8x8
J.6x6x6x6x6
K.12x12x12
L.18x18x18
So when you are trying to find the solution to the system of equations make sure that you have it where y= -4/5x-6 and y= -30 are written like this:
-30=-4/5x-6
And then solve for x:
Add 6 on both sides.
-24=-4/5x
Then multiply by the reciprocal of -4/5.
-5/4*-24=-5/4*-4/5x
x=30
But then you are gonna want to plug 30 in for x in y=-4/5x-6 to make sure that it is the same as y=-30.
Answer:
130
Step-by-step explanation:
62.4 divided by 48 to get the 1 percent of the number, then multiply by 100 to get the number.
Answer:
Empirical formula= COOH
Step-by-step explanation:
Molecular mass of the elements
Carbon= 12
Oxygen= 16
Hydrogen= 1
We divide the elements each with their molecular formula
Carbon= 2.4/12
Carbon= 0.2
Oxygen= 6.4/16
Oxygen= 0.4
Hydrogen= 0.2/1
Hydrogen= 0.2
Now we divide with the smallest result which is 0.2
Carbon= 0.2/0.2
Carbon = 1
Oxygen= 0.4/0.2
Oxygen= 2
Hydrogen= 0.2/0.2
Hydrogen= 1
So we have
Carbon 1, oxygen 2, hydrogen 1
Empirical formula= COOH
Could you possibly post a more high quality picture so its not blurry thanks!
