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podryga [215]
3 years ago
7

Three times the larger of two numbers is equal to four times the smaller. The sum of the numbers is 21. Find the numbers.

Mathematics
1 answer:
irakobra [83]3 years ago
4 0
3 * x = 4y (from the question)
X+y = 21 (from the question)

3(21-y) = 4y (sub equation 2 in equation 1)

63-3y = 4y

Y=9 (now you sub the 9 instead of y in any of the equations and solve for x)
X=21-y = 21-9 = 12

Hope it helps, the logic is sound just go over the math.
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\large\bf{\underline{In \: triangle \: ABD\:and\: triangle\:ADC}}

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\large\bf{\underline{Note :}}Slide to view full answer.

6 0
3 years ago
Help me plzzz help me plzzz ​
labwork [276]

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i 25000 cause 250×100 is 25000 ii. 100 cause 10×10 is 100

Step-by-step explanation:

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A telephone service representative believes that the proportion of customers completely satisfied with their local telephone ser
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A model train is 9 centimeters long. The actual engine is 18 meters long. What is the scale of the model? Tracy has a model trai
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Answer:

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3 years ago
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nignag [31]

I solved this using a scientific calculator and in radians mode since the given x's is between 0 to 2π. After substitution, the correct pairs are:

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sec(x)cot(x) + 2 = 0 → 7π/6 and 11π/6

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sin(x)cot(x) + 1/sqrt2 = 0 → 3π/4 and 5π/4

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5 0
4 years ago
Read 2 more answers
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