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MakcuM [25]
2 years ago
5

Given that y = 6 + 4x-x^2express y in the form a.-(x + b)^2, where a and b are

Mathematics
1 answer:
Y_Kistochka [10]2 years ago
4 0

Answer:

6 + 4x − x² = 10 − (x − 2)²

the turning point : (2 , 10)

Step-by-step explanation:

6 + 4x − x² =  − x² + 4x + 6

                 = − (x² − 4x) + 6

                 = − (x² − 4x + 4 − 4) + 6

                 = − [(x − 2)² − 4] + 6

                 = − (x − 2)² + 4 + 6

                 = − (x − 2)² + 10

                 = 10 − (x − 2)²

Then the turning point of y is (2 , 10)

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A communications tower is supported by two wires, connected at the same point on the ground. One is attached to the tower at D a
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Answer:

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Step-by-step explanation:

✍️What we are basically asked to solve here is to find the distance between C and D.

To find CD, find the length of BC, and BD. Their difference will give us CD.

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Thus:

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tan(40) = \frac{BC}{42}

Multiply both sides by 42

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