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Fynjy0 [20]
3 years ago
8

HELP THIS TRIGONOMETRY!

Mathematics
1 answer:
Nikitich [7]3 years ago
8 0
∠C = 180° - 45° - 65°
∠C = 70°

b/sin B = c/sin C
b/sin 65° = c/sin 70°
b = c/sin 70° × sin 65°
b = 20/0.9397 × 0.9063
b = 19.289
b = 19.3
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4 0
3 years ago
What is the slope of the line?
gayaneshka [121]
The answer is (5,4). X being the run (5), and Y being the rise (4).
5 0
2 years ago
Read 2 more answers
What is the slope given: (5,2)&(9,-6)
Paul [167]

Answer:

The slope is -2

Step-by-step explanation:

To find the slope we do y2 - y1 / x2 - x1  or in this case, -6 - 2 / 9 - 5

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So we get -8/4 or simplified -2/1 or -2

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Hope that helps u! :)

8 0
3 years ago
What is the equation of the line that passes through (4, 2) and is parallel to 3x – 2y = -6?
Dmitrij [34]

Answer:

y = \frac{3}{2} x - 4

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Rearrange 3x - 2y = - 6 into this form

Subtract 3x from both sides

- 2y = - 3x - 6 ( divide all terms by - 2 )

y = \frac{3}{2} x + 3 ← in slope- intercept form

with slope m = \frac{3}{2}

• Parallel lines have equal slopes, hence

y = \frac{3}{2} x + c ← partial equation of parallel line

To find c substitute (4, 2) into the partial equation

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3 0
3 years ago
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vichka [17]
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y = a(x - 2)^2 - 1

Using the given point: -3 = a(4 - 2)^2 - 1
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Therefore, required equation is
y = -1/2(x - 2)^2 - 1
y = -1/2(x^2 - 4x + 4) - 1
y = -1/2x^2 + 2x - 2 - 1
y = -1/2x^2 + 2x - 3
3 0
3 years ago
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