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umka21 [38]
2 years ago
5

Help please. this doesn't make sense ​

Mathematics
1 answer:
saveliy_v [14]2 years ago
5 0

Answer:

a = 39.2650873379cm

b = 11.5529459767cm

Step-by-step explanation:

a - Use the area of a triangle equation -  1/2 * a * b * Sin(C)

1/2 * 8 * 10 * Sin(79) = 39.2650873379cm

b - Use the cosine rule - c^2 = a^2 + b^2 - (2 * a * b * Sin(C)

64 + 100 - (2 * 8 * 10 * Cos(79)) = 133.4705607398

c = square root of 6.9396506484 = 11.5529459767cm

Put to however many significant figures / decimal places required.

:)

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8 0
3 years ago
Suppose that y varies inversely with x. Given x=-3 when y=-105. Find y when x=15
Allushta [10]

Answer:

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Step-by-step explanation:

It is given that y varies inversely with x.

y\propto \dfrac{1}{x}

y=\dfrac{k}{x}       ...(i)

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Therefore, the value of y is 21 when x=15.

8 0
3 years ago
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dexar [7]

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Step-by-step explanation:

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Step-by-step explanation:

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i hope this helped!

stay safe!

:)

6 0
4 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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