ILL MARK BRAINLIEST help with this math pleasephoto attached
2 answers:
You might be interested in
We have to solve this equation:
Third degree polynomials like this one are not easily solved, but this one has a root at x = 0. The let us factorize this polynomial as x times a second degree polynomial:
Now we can find the roots of the quadratic polynomial as:
Then, the solutions to the equation are:
x = 0
x = 3 - √3
x = 3 + √3
<span>Given that the average
time it takes to replace a defective car radiator is 70 minutes with a
standard deviation of 12 minutes.
The 90% confidence interval of a random sample of 50 is given by
</span>
The 90% confidence interval of a random sample of 50 is given by