Answer:
3 or -3
Step-by-step explanation:
You need to factor it to be able to find the solution.
x^2-9=0
(x+3)(x-3)=0 You now need to find 'each' zero, because if one parenthesis equals 0, then you are multiplying the rest of the equation by 0 which will equal 0.
x+3=0 Subtract three
x= -3
x-3=0 Add three
x= 3
x^2-9 will equal 0 when x is either +3 or -3
4 divided by 3,678= 0.00108754758
7 divided by 4,983=0.00140477623
Hello!
The easiest way to solve this would be to convert 6 4/5 to a decimal. We know that to convert a fraction to a decimal, we must divide the numerator by the denominator.
4 / 5 = 0.8
0.8 + 6 = 6.8
So, 6 4/5 is 6.8 as a decimal.
See how it's easier now that we've converted the mixed number to a decimal?
There could be many numbers between 6.8 and 7. Some examples are:
6.81, 6.82, 6.83, 6.9, etc.
Answer:
x = -5
Step-by-step explanation:
Solve for x:
(x + 5)^2 = 0
Take the square root of both sides:
x + 5 = 0
Subtract 5 from both sides:
Answer: x = -5