The line in a fraction that separates the numerator and denominator can be rewritten using the division symbol. So, to convert a fraction to a decimal, divide the numerator by the denominator. If required, you can use a calculator to do this. This will give us our answer as a decimal.
Alright so this is what you do.
You need to isolate one variable so that it is y = or x =
Lets go with y = for the first one
-x +3y = -6
x - 3y = 6
Isolate y = by adding x for the first one and then subtracting x from the second one.
3y = -6 + x
-3y = 6 - x
You would then divide the second one by -3 and divide by 3 in the first one.
y = (-6 +x) / 3
y = (6 -x) / -3
Since this is what y = you can put them together.
-6+x) / 3 = 6-x)/-3 (I put one parenthesis for convenience)
This equation is now set and you aren't done yet.
You can take out -1 from each side. This makes it no solution since you must always multiply by -1.
(6+x) / 3 = -1( (6+x) / 3)
Try the second one on your own!
Answer:
x=1
Step-by-step explanation:
You multiply the 1/2 by everything in the parentheses, but multiplying by 1/2 basically cuts everything in half. So you would have (3x+4)=2x+4+x
Add the like terms together, so 2x+x=3x
Now you have 3x+4=3x+4
Because they are the same, your answer is 1.
Answer:
Subtract 11/2y from each side of the equation
Step-by-step explanation:
Answer:
Factored Equation:
A = 4,000,000(1 + r)
If r = 0.14%, the number of bacteria after one hour is calculated by:
4,000,000(1 + 0.14/60)
= 4,000,000(1.002333)
= 4,009,332
After one hour, the petri dish will have produced 4,009,332 bacteria at a growth rate of 0.14%.
Side note: I don't even know if this is right. I just went with what I have.
