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Leno4ka [110]
3 years ago
15

In ABC, mC = 30 and a = 8. If the area of the triangle is 12, what is the length of side b?

Mathematics
1 answer:
CaHeK987 [17]3 years ago
7 0

9514 1404 393

Answer:

  b = 6

Step-by-step explanation:

The area is given by the formula ...

  Area = 1/2·ab·sin(C)

  12 = (1/2)(8)b·(1/2) . . . . . fill in the given values

  12 = 2b . . . . . . . . . . . simplify

  6 = b . . . . . . . . . . . divide by 2

The length of side b is 6 units.

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4 0
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Keith_Richards [23]
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Solving for the average is simple:
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Since you know you have that fourth exam, just substitute it into the total value as an unknown, X:
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Now you need to solve for X, the unknown:
87
+
88
+
92
+
X
4
(4) = 90 (4)
Multiplying for four on each side cancels out the fraction.
So now you have:
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Now that you have an answer, ask yourself, "does it make sense?"
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4 0
3 years ago
Read 2 more answers
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