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Luda [366]
3 years ago
5

The sum of two numbers is 8. When four times the smaller

Mathematics
2 answers:
Stolb23 [73]3 years ago
5 0

Answer:

x+x=8

that's mean: 2.x/4 + 4.x/1 = 18/1

we find at least a common multiple of 4 and multiply the units by 4

2x + 16x = 72

18x = 72/:18

x = 4

arsen [322]3 years ago
3 0

Answer: 7

suppose: the smaller number is a

the larger number is b

because The sum of two numbers is 8 => a + b = 8 (1)

four times the smaller  number is added to two times the larger number, the result  is 18 => 4a + 2b = 18 (2)

(1)(2) => a + b = 8

              4a + 2b = 18

<=> a = 1

     b = 7

=> the larger number is 7

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Answer: 70  meters.

Step-by-step explanation:

Observe the figure attached.

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<em />

Both triangles are right triangles. Therefore, you can calculate the distance  between the walls as following:

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- Calculate the distance AE:

tan\beta =\frac{opposite}{adjacent}\\\\tan(45\°)=\frac{40}{AE}\\\\AE=\frac{40}{tan(45\°)}\\\\AE=40m

Therefore the distance between the walls is:

DE=30m+40m=70m

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