3 years ago

1Ox+6-8x=9x +12-8x-2

Mathematics

1 answer:

Goshia [24]3 years ago

3 0

Answer:

X=4

Step-by-step explanation:

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3 years ago

If the modulus is 4 and the real part is –2.0, what is the imaginary part?

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An engineer needs to determine the distance across a river without swimming to the other side. The engineer notices a tree on th

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Answer:

Step-by-step explanation:

The engineer can use a clinometer to measure the angle of elevation of the top of the tree. Let the height of the tree be represented by x, the she could determine the distance across the river, d, by applying the trigonometric function.

Tan θ = $\frac{opposite}{adjacent}$

= $\frac{x}{d}$

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Assume the angle of elevation of the top of the tree is $30^{o}$ , and the height of the tree is 10 m, then the distance, d, across the river would be;