Answer:
option A is correct if operation A is correct make me as brainleylist
A+b=13
a-b=7
add the two equations using system of equations
2a=20
a=10
10+b=13
b=3
When you add 2 logs together, you get the log of the product.
When you subtract 2 logs, you get the log of the quotient.
Like this:
Ln(2) - Ln(3x+2) is the Ln(2/3x+2) .
So now you have Ln(2/3x+2) = 1
Raise 'e' to the power of
each side of the equation: (2/3x+2) = e¹
Multiply each side by (3x+2): 2 = (e) (3x+2)
Divide each side by 'e': 2/e = 3x + 2
Subtract 2 from each side: (2/e) - 2 = 3x
Divide each side by 3: x = [ (2/e) - 2 ] / 3
= approx. -0.421... (rounded)
I checked this by writing it into the original equation in place of 'x'.
That took my about 5 tries, but it finally checked OK.
Please. DON't use my answer unless you understand
where it came from.
Answer:
+ 7
Step-by-step explanation:
x + 2 × x + 5 = + 7
Add whatever unit is being used I'm just putting
X^2+2x-5x-10
x(x+2)-5(x+2)
(x-5)(x+2)
