
so, plus or minus? well, the angle is in the 1st quadrant, and on that quadrant, both cosine and sine are positive, so 4 = b
Answer:

Step-by-step explanation:
Given


Dimension of unpainted area:
--- Square
Required
Determine an expression to solve for x
First, calculate the area of the unpainted space;



The unpainted area, added to the painted area, equals the total area.
So, we have:


Hence, the expression is: 
Answer:
its a file to powerpoint hope thats ok
Step-by-step explanation:
From the given question, we did not reject the null hypothsis which makes the answer to this question a type II error
<h3>What is type I error ?</h3>
Data:
- Mean fuel efficiency = 23.4 mpg
- samples = 41
This is an error done from rejecting the null hypothesis (H_0) when the null hypothesis is true, is known as type I error.
<h3>What is type II error ?</h3>
This is an error committed from not rejecting the null hypothesis (H_0) when actually the null hypothesis is false, is known as type II error
Given that the air filter changes are not effective i.e. ȝ = 24.7.
It means that if we do not reject the null hypothesis we shall make a correct decision. So consequently the chance of type II error is impossible because it occurs when we do not reject the null hypothesis, but here not rejecting the null hypothesis will lead to correct decision.
The answer to this question is type II error
Learn more on null hypothesis here;
brainly.com/question/15980493