The population of a city has increased by 33% since it was last measured. If the current population is 39,900, what was the prev
1 answer:
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Answer:
the answer if the first picture
Step-by-step explanation:
the second one is the explanation
Look at the picture.
We have the equation (1) 12x + 4y = 40.
We know, the sum of the acute angles in a right triangle is 90°.
Therefore we have the equation (2) (12x + 4y) + (17x - y) = 90
Substitute (1) to (2):
40 + 17x - y = 90 <em>subtract 40 from both sides</em>
17x - y = 50 (3)
We have the system of equations:
Substitute the value of x to (3)
Answer: x = 3 and y = 1.
Answer:
5
Step-by-step explanation:
multiplied by
which makes:
simplify: 5