Wolfrich lived in Portugal and Brazil for a total period of 14 months in order to learn Portuguese.
2 answers:
Answer: He lived in Portugal for 9 months and in Brazil for 5 months.
Step-by-step explanation:
Let the number of months he lived in Portugal be 'x'.
Let the number of months he lived in Brazil be 'y'.
Total number of months = 14
Average new words per month when he lived in Portugal = 130
New words in x months = 130x
Average new words per month when he lived in Brazil = 150
New words in y months = 150y
Total new words = 1920
So, our equation would be
Let x = 14-y from equation 91).
Now, we put this value in equation (2).
if y = 5
then, x= 14-5 = 9
Hence, he lived in Portugal for 9 months and in Brazil for 5 months.
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Answer:
Step-by-step explanation:
The number can be divisible by 7.
The multiples of 7 are 7,14,21,28,35,42,49,56,63,70,77,84 and so on
<u>Finding the factors for all of the multiples of 7:</u>
7 => 1,7 [Not 4 factors]
14 => 1,2,7,14 [4 factors but Sum = 24]
21 => 1,3,7,21 [4 factors but Sum = 32]
28 => 1, 2, 4, 7, 14, 28 [Not 4]
35 => 1,5,7,35 [4 factors but Sum = 48]
42 => 1, 2, 3, 6, 7, 14, 21, 42 [Not 4]
49 => 1,7,49 [Not 4]
56 => 1, 2, 4, 7, 8, 14, 28, 56 [Not 4]
63 => 1, 3, 7, 9, 21, 63 [Not 4]
70 => 1, 2, 5, 7, 10, 14, 35, 70 [Not 4]
77 => 1, 7, 11, 77 [4 factors and Sum = 96]
Answer: 10 + 7x 40
We can use exclusion method:
A and C is not correct because Ms Hernandez doesn't want to spend more than 40 dollars --> so it must be less than or equal to 40