Answer:
Step-by-step explanation:
tan (40) = x/12
x = 12*tan(40)
Answer:
The correct answer is
(0.0128, 0.0532)
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of
, and a confidence interval
, we have the following confidence interval of proportions.

In which
Z is the zscore that has a pvalue of 
For this problem, we have that:
In a random sample of 300 circuits, 10 are defective. This means that
and 
Calculate a 95% two-sided confidence interval on the fraction of defective circuits produced by this particular tool.
So
= 0.05, z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:

The upper limit of this interval is:

The correct answer is
(0.0128, 0.0532)
Answer: 5+5+12+12
Step-by-step explanation:
Answer:
25
Step-by-step explanation:
ABC is a right angle so ABD and DBC are <em>complementary angles</em> and their sum is equal to 90:
x + 55 = 90 subtract 55 from both sides
x = 25
Answer:
x=21
Step-by-step explanation:
Let's solve your equation step-by-step.
3x+5+5x+7=180
Step 1: Simplify both sides of the equation.
3x+5+5x+7=180
(3x+5x)+(5+7)=180(Combine Like Terms)
8x+12=180
8x+12=180
Step 2: Subtract 12 from both sides.
8x+12−12=180−12
8x=168
Step 3: Divide both sides by 8.
8x
/8
=
168
/8
x=21
brainliest please?