Answer:
X=12
Step-by-step explanation:
simplify both sides of the equation then isolate the variable.
5/2(12)-7=23
3/4(12)+14=23
making both equations equal to each other.
Try suggested solution, note, the answers are marked with green colour.
We want to find the sample size n such that
Pr[|µ - 101| < 5] = 0.98
where µ is ... some mean. It can be the mean for either the true population or the sample. It's unclear which is which from the given info, but that's not actually important.
In the inequality, divide both sides by the standard error, σ/√n = 16/√n :
Pr[|µ - 101|/(16/√n) < 5/(16/√n)] = 0.98
Use a lookup table to find the z-score corresponding to 0.98 :
⇒ 5/(16/√n) ≈ 2.05375
Solve for n :
⇒ n ≈ 43.1911 ≈ 44
Answer:
6x^3+20x+
+627
Step-by-step explanation:
Factor the numerator and denominator and cancel the common factors.
Hope this helps
Answer:
see below.
Step-by-step explanation:
The two lines are parallel with different y intercepts. That means they never intersect. The solution to the system of equations is where they intersect. This means there is no solution to the system of equations.
