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3 years ago

Eddie solved for the length of side c in △CBD using the Law of Cosines formula,

Mathematics

2 answers:

Nataly_w [17]3 years ago

8 0

Answer:

b^2= a^2+ c^2 -2acsin B

Step-by-step explanation:

In ΔABC, It is given that AB= c, AC=b and CB= a,

In order to find side length of b, she can use the Law of sines i.e

b^2= a^2+c^2-2ac sin B

by substituting the values of side lengths of a and c and sin angle B.

yKpoI14uk [10]3 years ago

4 0

B^2 = a^2 + c^2 - 2ac sin B

is the answer

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In equilateral ∆ABC length of the side is a. Perpendicular to side AB at point B intersects extension of median in point P. What

allochka39001 [22]

The answer is a+6b, if you want to know the proof please comment on this post

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3 years ago

Read 2 more answers

"three food trucks are set up at points a, b, and c. each of the three trucks is the same distance from the food distributor. at

jolli1 [7]

Answer:

circumcenter

Step-by-step explanation:

Suppose the three food trucks points a,b,c are joined together in such a way that the form a triangle. The perpendicular bisectors of the triangle are concurrent . The point of concurrency is called <u>circumcenter.</u>

According to the circumcenter theorem the points ( vertices of the triangle a,b,c) are equidistant from the center D ( point of concurrency) called the circumcenter.

As the food distributor is equidistant from each of the trucks it lies at the circumcenter point of concurrency.

The drawing is just a generalizations to give an idea. It does not show actual bisectors perpendicular.

3 0

3 years ago

Assume that the random variable X is normally distributed, with mean μ = 110 and standard deviation σ = 20. Compute the probabil

kogti [31]

Answer:

P(X > 126) = 0.2119

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 110, \sigma = 20$

P(X > 126) is the 1 subtracted by the pvalue of Z when X = 126. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{126 - 110}{20}$

[tez]Z = 0.8[/tex]

[tez]Z = 0.8[/tex] has a pvalue of 0.7881.

P(X > 126) = 1 - 0.7881 = 0.2119

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4 years ago

PLEASE HELP GUYS/GIRLS

Lana71 [14]

The answer is B
hope this helps

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3 years ago

Your company recently made a purchase of 25 identical tables. The purchase price after adding 5% sales tax was $1,706.25. You la

RUDIKE [14]

You'll be paying less for the tables because you're ordering fewer tables: 20 instead of 25.

Find the unit, after-tax price of a table:

$1,706.25

--------------- = $68.25 per table

Then, the total that must be paid to purchase 20 tables is

20($68.25/table) = $1,365

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3 years ago