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Vaselesa [24]
3 years ago
6

PLEASE HELP! URGENT. the law of cosines is a2+b2-2abcosC=c2. Find the value of 2abccosC.

Mathematics
1 answer:
Elodia [21]3 years ago
5 0

Answer:

D

Step-by-step explanation:

2ab*cos(C)=a^2+b^2-c^2

2ab*cos(C)=5^2+4^2-2^2=25+12=37

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A triangle that contains angles of 35°, 90°, and 55° is a(n) _______ triangle. A. right B. acute C. obtuse D. equiangular
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Please help me
Nataly_w [17]

Jane is given a $100 gift to start and saves $35 a month from her allowance.

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In general, after x months Jane has saved

This means that it makes sense to represent the relationship between the amount saved and the number of months with one constant rate (in this case the constant rate is 35). It makes sense because the amount of money increases by $35 each month. Since the amount of increase is constant, we get constant rate. Also the initial amount is known ($100), so there is a possibility to write the equation of linear function representing this situation.

Step-by-step explanation:

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2 years ago
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Answer:

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Step-by-step explanation:

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2 years ago
Find the area of the region between a regular hexagon with sides of 6" and its inscribed circle.
kirza4 [7]

Answer:

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Step-by-step explanation:

Area of region between a regular hexagon with sides 6" and circle inscribed.

So Area of region = Area of regular hexagon - area of circle

Now area of regular hexagon = \frac{3a^{2} \sqrt{3}}{2}

where a = side of the hexagon = 6"

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Area of circle inscribed = πr²

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Now area of region = 93.53 - 78.5 = 15.03 in²

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3 years ago
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