It should be B correct me if I'm wrong but it should be B.
Answer:
7.75+1.25x=31.50
Step-by-step explanation:
so in the end the answer is 19
Answer:
(x, y) = (-8, 19)
Step-by-step explanation:
9x + 3y = -15
-4x - 3y = -25
(9x + 3y) + ((-4x) - 3y) = -15 + (-25)
5x = -40
x = -8.
So,
9x + 3y = -15
9 * (-8) + 3y = -15
-72 + 3y = -15
3y = 57
y = 19
Answer:
A)
Step-by-step explanation:
We can use logarithm properties to write it as:
On removing it gives:
Taking square root both sides.
Solving for we get:
and
Subtracting by 1 to both sides of both the above equations.
and
and
So we have got two solutions for the logarithmic equation.
Now we check the validity of the solutions by plugging values in the equation
Plugging
[As ]
So, thats a valid solution.
Plugging
As is undefined, so is not a valid solution which means its extraneous.
You just have to add. Ex AC you would add them and see if it's the same if you add DF