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DIA [1.3K]
2 years ago
10

Use the law of cosines to find the indicated missing side

Mathematics
1 answer:
max2010maxim [7]2 years ago
7 0

Answer:

19.08

Step-by-step explanation:

c² = a² + b² - 2ab×cos(C)

a=10

b=22

C=60

cos(60) = 0.5

c² = 10² + 22² - 2×10×22×cos(60) =

= 100 + 484 - 20×22×0.5 = 584 - 20×11 = 584 - 220 =

= 364

c = sqrt(364) ≈ 19.08

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Part A: how many solutions dose the pair of equations for lines A and B have?
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3) When two lines intersect each other at one point we say the system of equation has one solution.

Part A:

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Part B:

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Find the x and y intercepts for the following equation. 2x– 7y=-14
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Answer:

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Step-by-step explanation:

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2x - 7y = -14

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Divide both sides by -7 to solve for y:

-7y/-7 = -14/-7

y = 2

Therefore, the y-intercept = 2.

Next, the x-intercept is the point on the graph where it crosses the x-axis, and has coordinates, (a, 0). To find the x-intercept, set y = 0 and substitute into the given equation:

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Divide both sides by 2 to solve for x:

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Therefore, the correct answer is C: Xint = 2, Yint. = -7

Please mark my answers as the Brainliest if you find this helpful :)

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