Answer:
99% Confidence interval: (50.9,61.3)
Step-by-step explanation:
We are given the following in the question:
Sample mean, 
= 56.1
Sample size, n = 72
Alpha, α = 0.01
Sample standard deviation, σ = 16.7
Degree of freedom = n - 1 = 71
99% Confidence interval:
Putting the values, we get,
Answer:
x would equal 2 and y would equal -6 so, (2,-6)
Step-by-step explanation:
Answer:
Apply the distributive property to the expression to write an equivalent expression.
5x + 35
Complete the statements.
Find the GCF of
✔ 5x and 35
.
Now, factor out the GCF by dividing each term in the expression by
✔ 5
.
5x divided by the GCF is
✔ x
, and 35 divided by the GCF is
✔ 7
.
The equivalent expression is
✔ 5(x + 7)
.
In this problem you cross multiple. So on Monday 15 out 20 students vote which is 15/20 and the second one is 16 students present and we don’t know how many people voted which is x/16 so we multiple 20 by x and 16 by 15 we get 20x=240 we need to isolate x so we divide 20 on both sides and x=12
