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Mariana [72]
3 years ago
5

11)

Mathematics
1 answer:
Anastasy [175]3 years ago
4 0

Answer:

Let x = the numerator

Let x + 3 = the denominator

(x + 5)/(x + 8) = 4/5         Cross multiply

5x + 25 = 4x + 32

x = 7

x + 3 = 10

7/10

Step-by-step explanation:

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Where is EF to the nearest tenth??
Katena32 [7]

Answer:

37.7

Step-by-step explanation:

EF and ED define the Tangent of D

Tan(37) = side opposite D / side adjacent to D

Opposite means a line (FE) that is not connected to the angle. It is never the longest line (hypotenuse) in a Right Triangle

Adjacent means the leg that is connected to the angle, but is not the hypotenuse.

Tan(D) = opposite over adjacent

Opposite = x

Adjacent = 50

Tan(37) = 0.7536 rounded to 4 places, but I've kept the exact value in my calculator.

0.7536 = x / 50     Multiply both sides by 50

0.7536*50 = x

x = 37.6777

The nearest 1/10 is 37.7

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How can undefinable terms be used to create precise mathematical definitions?
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