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Simora [160]
3 years ago
10

Which equation represents a line that passes through (2 -1/2) and has a slope of 4

Mathematics
1 answer:
maksim [4K]3 years ago
3 0

Answer:

y + 1/2 = 4(x - 2)

Step-by-step explanation:

Use the point-slope equation y - k = m(x - h).

Inserting the given info, we get  y + 1/2 = 4(x - 2)

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What is the best approximation of the length of segment QS? (Note: cos 80° = 0.17)
matrenka [14]

Answer: QS=11.8cm


Step-by-step explanation:

1. You have the following information:

- The lenght of RS is 2 centimeters.

- The angle m∠S=80°.

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2. Therefore, you can calculate the lenght of the segment QS as following:

cos80=\frac{adjacent}{hypotenuse}

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3. Substitute values and solve for QS:

0.17=\frac{2cm}{QS}\\QS=\frac{2cm}{0.17} \\QS=11.76cm

4. To the nearest tenth:

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Factor Completely: x2 - 81 <br> A.(x-9)(x+9)<br> B.(x+9)(x+9)<br> C.(x-9)(x-9)<br> D.(9-x)(9+x)
Hunter-Best [27]

Answer is A

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(X+9) x(x-9)

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