Answer:
x = ±sqrt(2)
Step-by-step explanation:
8x^2 - 5 = 11
Add 5 to each side
8x^2 - 5+5 = 11+5
8x^2 = 16
Divide each side by 8
8x^2 = 16/8
x^2 = 2
Take the square root of each side
sqrt(x^2) = ±sqrt(2)
x = ±sqrt(2)
Answer:
Value of x=8
Step-by-step explanation:
Given : 
To find : The solution to the equation given
Solution :
Step 1- Write the given expression
Step 2 - Using logarithmic laws
Step 3 - To remove log-base 2, we need to raise the left and right hand terms to power 2.
Step 4 - Solve the quadratic equation
Either x=8 or x=-2
We neglect x=-2 because negative value is not defined in log.
Value of x=8
Answer:
I can't see the file
Step-by-step explanation:
Answer:
Apologiabiology Ambitious
v=vanilla
c=chocolate
A.
4v+c=45
v+c=27
b.
multiply 2nd equation by -1 and add to first
4v+c=45
-v-c=-27 +
3v+0c=18
3v=18
divide both sides by 3
v=6
sub bac
v+c=27
6+c=27
minus 6
c=21
21chocolate
6 vanila
Step-by-step explanation:
The amount invested at 4% is $4,200. This problem can be solved by using two linear equation with two different variables which represent the investment's partition and the investment's return. The first equation is x+y=$7,600 and the second equation is 0.04x + 0.05y=$338, then you must substitute the y variable in the second question with the first equation (0.04x + 0.05($7,600-x)=$338). Therefore, you will get a new equation to solve the problem which is 0.04x+380-0.05x=338 resulting x=$4,200.
