Answer:
Step-by-step explanation:
where x represents his original number. to solve and find his original number, add 7.1 to both sides.
To find the angle of the helicopter, we are going to take advantage of the fact the the sum of the interior angles of a triangle is always 180°. Lets denote that angle with
, so:
Look what we have here: a angle of 90°, so our triangle is a right triangle.
Now, let
be the distance between Amanda and the helicopter. Using the law of sines:
Remember that sine of 90 ° is equal to 1, so:
We can conclude that the distance between Amanda and the helicopter is
2000 feet.
The answer is 171.25.
Hope this helped!
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Answer:
<h2> 360 m²</h2><h2 />
Step-by-step explanation:
surface area of a square base pyramid = base area + 4 ( triangular sides area)
where:
base = 12 m
side height length = 9 m
Surface area = 12² + 2(12)9
= 144 + 216
= 360 m²
Answer:
H0 : P ≤ 0.12
H1 : P > 0.12
Step-by-step explanation:
12% = 12/ 100 = 0.12
Given the population proportion, P = 0.12
The claim is the alternative hypothesis, H1 ; which is to test if more than 12% of trees have been infested.
Hence, the alternative hypothesis will be ;
H1 : P > 0.12
The null hypothesis which is the initial truth is always the opposite of the alternative hypothesis, Therefore, we write our null as ;
The null hypothesis ; H0 : P ≤ 0.12
Therefore, we have :
H0 : P ≤ 0.12
H1 : P > 0.12