Answer
You can multiply the first equation by 4 and the second equation by 3.
You can multiply the first equation by 4/3.
You can multiply the first equation by 3.
Explanation
When solving a system of equations by elimination, you want to add or subtract the equations to "get rid" of a variable.
To do that, one of the variables in both equations have to have the same coefficient.
The first answer possible gives x the coefficient of 12 for both equations. You would get 12x+4y=52 and 12x-9y=39. You could subtract those equations to get 13y=13.
The second way gives x the coefficient of 4. You would multiply the first equation by 4/3 to get 4x+4/3y=52/3. You can subtract to get one variable, and then solve from there. Although, multiplying for 4/3 is annoying, so it's not suggested.
You can also "get rid" the the y. Multiply the first equation by 3 to get 9x+3y=39. You can add these equations. When you add 9x+3y=39 and 4x-3y=13 you get 13x=52.
Answer:
Step-by-step explanation:
hen molecular hydrogen (H2) and oxygen (O2) are combined and allowed to react together, energy is released and the molecules of hydrogen and oxygen can combine to form either water or hydrogen peroxide. These two processes are represented by the two chemical equations shown at right.
Is 4,560 divisible by 2, 3, 5 or 10?
Answer:
The Correct Answer Is 5
4560 is divisible by 5 if 4560 divided by 5 results in a whole number with no remainder.
You may also be interested to know that 4.560 divided by 5 is 912.
note that the last digits of any number must end with 0 or 5 to be divisible by 5
Hope this helps!!
Answer:
Step-by-step explanation:
angular frequency
ω = 2π/ T = 2π/4 = π/2 rad/s
A = 7 inch
Starts at rest (maximum swing, |A| = 7) so cosine function is easiest
x = -7cos(πt/2)
Volume is 216 sorry if you get it wrong
