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Scorpion4ik [409]
3 years ago
8

50% of a number is x. What is 100% of the number? Assume x > 0.

Mathematics
1 answer:
raketka [301]3 years ago
7 0

Answer:

2x > 0

Step-by-step explanation:

\frac{50}{100} :\frac{x}{y}

50 × y = x × 100

50y = 100x

50y ÷ 50 = 100x ÷ 50

y = 2x

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the length of the shadow of a pole on level ground increases by 90m when the angle of elevation of the sun changes from 58 degre
Anarel [89]

Answer:

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Step-by-step explanation:

The given parameters are;

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We have a triangle formed by the change in the length of the shadow and the rays from the two angle of elevation to the top of the pole giving an angle 22° opposite to the increase  in the length of the shadow  

We have by sin rule;

90/(sin (22°)  = (Initial ray from the top of the pole to the end of the shadow's length)/(sin(122°)

Let the initial ray from the top of the pole to the end of the shadow's length = l₁

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Therefore;

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The height of the pole= 167 m to three significant figures.

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3 years ago
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Step-by-step explanation:

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