<span>Which expression is equivalent to the expression below? (x/x+4)/x = 5/x
a. (x/x+4)(x/1) =
b. (x/x+4)(1/x) = 5/x
c. (x+4/x)(1/x) =
d. (x+4/x)(x/1)</span>
Answer:
The margin of error associated with this confidence interval is 20
Step-by-step explanation:
A confidence interval has two bounds, a lower bound and an upper bound. The interval is symmetric, which means that the margin of error is the difference between these two bounds(upper - lower), divided by 2.
In this problem, we have that:
Lower bound: 520
Upper bound: 560
Determine the margin of error associated with this confidence interval.
(560 - 520)/2 = 20
The margin of error associated with this confidence interval is 20
Answer:
(30, ∞)
Step-by-step explanation:
b – 27 > 3
Add 27 to both sides
b > 30
In interval notation
(30, ∞)
Angle between 16 and 18 = 90 + 55 = 145°
