In case A, as the error would be a difference of 1, the assumption could be mantained, but in case B the difference will be bigger, showing that the ratio is not 3:1 but 4:1.
<h3><u>Ratios</u></h3>
Given that a preliminary study was carried out to test the hypothesis that the ratio of white to dark herons on the island was 3:1, but A) a small census found 16 white morphs and 4 dark, to determine if the assumption of a 3 :1 ratio could be rejected, and B) to determine the same question if the census were larger with 160 white morphs and 40 dark, the following calculations must be made:
A)
- 3 + 1 = 4
- 16 + 4 = 20
- 4 = 20
- 3 = X
- 60 / 4 = X
- 15 = X
- Therefore, as the error would be a difference of 1, the assumption could be mantained.
B)
- 3 + 1 = 4
- 160 + 40 = 200
- 150 = 3:1
- In this case, the difference will be bigger, showing that the ratio is not 3:1 but 4:1.
Learn more about ratios in brainly.com/question/1504221
Answer:
Karla can ride 12 rides.
Step-by-step explanation:
39-15=24
24/2=12
All of them have the same answer of -8 except the last one.
You would change the whole number to a fraction by putting it over 1 and make the mixed number an improper fraction by multiplying the whole number part of the mixed number by the denominator and then and the numerator
(1) -6 x + 8 x = -46 Answer = -23
(2) w + 3/4 = w - 2/2 Answer = {}
(3) 2 x + 16 = 3(x - 9) Answer = 43
(4) Answer D)
(5) -3 x + 4 = -8 Answer x = 4
(6) C)
(7) B)
(8) C)
(9) x + 3/5=2 Answer x = 7/5
(10) 4 - 2 x = 10 Answer x= = -3
If something is wrong apologize, I hope it helps.
