Answer:
20 green pencils
Step-by-step explanation:
The difference between black and green "ratio units" is 7 -5 = 2. The difference between red and blue ratio units is 3 -2 = 1. The sum of those differences is 2 +1 = 3 ratio units, which represent 12 pencils. Then each ratio unit represents 12/3 = 4 pencils.
The 5 ratio units of green pencils represent 5·4 pencils = 20 green pencils.
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If you need an equation, you can use k as the constant of proportionality. Then the sum of differences described is ...
(7k -5k) + (3k -2k) = 12
3k = 12 . . . . simplify
k = 4 . . . . . . divide by 3
5k = 5·4 = 20 . . . . . number of green pencils
Answer:
The domain is all Real x except x = 2 .
Step-by-step explanation:
(cd)(x) = ( 5 / x-2) * x+3
= 5(x+3)/(x-2)
The domain is all Real x except x = 2 .
(because when x = 2 (cd)(x) is undefined).
Answer:
14
Step-by-step explanation:
it is 14 because when you divide 40 to 14 it is ...
Z scores are (age - mean) / std dev
= 23 - 27 / 2 = -2 and 27-27 / 2 = 0
Using the standard normal tables we find the required percentage is 47.73%
Answer:
options: 83/90 92/99 83/9 83/100. 0.92 = 92 / 100
Step-by-step explanation:
