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Kruka [31]
3 years ago
6

Use the law of cosines to find the length of a

Mathematics
1 answer:
borishaifa [10]3 years ago
4 0

Answer:

Step-by-step explanation:

You don't need the Law of Cosines, the Law of sines if what you need. You can't use the Law of Cosines because in order to find side a, you would need the length of side c and you don't have it. Using the Law of Sines is appropriate, knowing that angle B = 55:

\frac{sin55}{175}=\frac{sin42}{a} and solving for a:

a=\frac{175sin42}{sin55} so

a = 143.0

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Answer:

the right answer is A

-x^2-3

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Aircraft landing gears coming from a facility are inspected for defects with the aim to improve the failure rates. Historical da
erica [24]

Answer:

78% probability it contains no defects

Step-by-step explanation:

We have that:

10% have defects in shafts only.

8% have defects in bushings only.

4% have the two types of defects.

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Either it has at least one defect, or it has no defects. The sum of these probabilities is 100%. So

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5 0
3 years ago
Use substitution to solve the system of linear equations. In your final answer, include all of your work.
Fantom [35]
Replace 'y' with -3x+4

x + \frac{1}{3} (-3x+4) = \frac{4}{3} \\  \\ x -x + \frac{4}{3} = \frac{4}{3}  \\  \\ \frac{4}{3} = \frac{4}{3}

The variable 'x' cancels out, leaving the True statement 4/3 = 4/3
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4 0
3 years ago
A population of beetles are growing according to a linear growth model. The initial population (week 0) is p0=6 and the populati
wel

Answer:

P(n)= p0 + 11(n)

Where p0= population of week 0

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After the subtraction, we have 7 weeks remaining.

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For n number of weeks, population p of beetles

P(n)= p0 + 11(n)

Where p0= population of week 0

P(n) = population of n weeks

n= number of weeks

3 0
3 years ago
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