3 years ago

Which is the answer?

Mathematics

1 answer:

Airida [17]3 years ago

5 0

I believe the answer is D :)

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Triangle ABC has side lengths a= 24, b= 40, and c= 55. What is the measure of angle C? 83.6° 116.2° 23.0° 40.7°

Harlamova29_29 [7]

<h3>Answer: 116.2°</h3>

Work Shown:

$c^2 = a^2 + b^2 - 2ab\cos(C)\\\\55^2 = 24^2 + 40^2 - 2*24*40\cos(C)\\\\3025 = 576 + 1600 - 1920\cos(C)\\\\3025 = 2176 - 1920\cos(C)\\\\3025 - 2176 = -1920\cos(C)\\\\849 = -1920\cos(C)\\\\-1920\cos(C) = 849\\\\\cos(C) = (849)/(-1920)\\\\\cos(C) \approx -0.4421875\\\\C \approx \cos^{-1}(-0.4421875)\\\\C \approx 116.243535748231^{\circ}\\\\C \approx 116.2^{\circ}\\\\$

The first equation is one of the three variations for the Law of Cosines.

Make sure your calculator is in degree mode.

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2 years ago

An owner of a small store knows that in the last week 54 customers paid with cash, 42 paid with a debit card, and 153 paid with

damaskus [11]

Answer:

54/249 or

0.2168674

Step-by-step explanation:

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4 years ago

The number p is 20 more than the number q. Using algebra, write the relationship between p and q.

makvit [3.9K]

We can express the question by algebraic expression
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3 years ago

A researcher decides to take a random sample of the population and determine the ALT levels of the population, which fall on a c

Nady [450]

Answer:

False

Step-by-step explanation:

The given statement is false. The histograms or bar charts are used when one is given discrete data for a certain value or the interval of a certain range but for the continuous data plotting, we need continuous frequency curves line graphs. Since the ALT levels fall on a continuum, representing them on a bar chart will not make any sense. they should be plotted on some continuous curve distribution lines like smoot line graphs (curves).

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What is the quotient of the following division problem?

Dennis_Churaev [7]

D is the answer. hope this helps. yes it’s correct

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4 years ago