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Slav-nsk [51]
3 years ago
7

Triangle A B C is shown. Angle A C B is a right angle. The length of the hypotenuse is 20.

Mathematics
2 answers:
kherson [118]3 years ago
8 0

Answer:

The length of BC is needed because it is the side opposite ∠A.

Step-by-step explanation:

Given the right angles triangle as shown in the attachment, we can get sin(A) without using Pythagoras theorem. Instead we will use SOH CAH TOA trigonometry identity.

According to SOH:

Sin(A) = Opposite/Hypotenuse

Sin(A) = |BC|/|AB|

Opposite side of the triangle is the  side facing ∠A.

Based on the formula, we will need to get the opposite side of the triangle which is length BC for us to be able to determine sinA since the hypotenuse is given.

OLEGan [10]3 years ago
5 0

Answer:

Bc is needed because it is opposite of A

Step-by-step explanation:

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During a promotional weekend a state fair gives a free admission to every 175th Person who enters the fair on Saturday there wer
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Answer:

69

Step-by-step explanation:

If every 175th person gets free admission, that means

175th

175 * 2 = 350th

175 * 3 = 525th

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This basically means <em><u>"how many 175s are there is 6742 (for first day) and 5487 (for 2nd day)?"</u></em>

<em><u /></em>

We would need to divide and see the WHOLE number, not the fractional(decimal) amount remaining. So

<u>1st Day:</u>

6742/175 = 38.53

This means 38 people will get free admission

<u>2nd Day:</u>

5487/175 = 31.35

This means 31 people will get free admission

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2 years ago
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Step-by-step explanation:

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3 years ago
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The following table shows the salary of 7 people in an office last year.
Andreas93 [3]

Answer:

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b. Mean without Deva's income = £19416.67

Step-by-step explanation:

The mean is calculated by dividing the sum of values by number of values. Given 7 values will be used to calculate mean.

So,

Number of values = n = 7

Now,

Mean = \frac{Sum}{No.\ of\ values}\\=\frac{13500+27500+13750+79000+19250+27500+15000}{7}\\=\frac{195500}{7}\\=27928.5714..

Rounding off to two decimal places

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Now we have to calculate mean without Deva's income so the number of values will be 6 and the sum will be:

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The mean without Deva's income is:

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Mean = £19416.67

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