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3 years ago

How do you find the mean?

Mathematics

2 answers:

avanturin [10]3 years ago

7 0

You add up all the numbers then divide the sum by how many numbers there are.

Hope this helps, Kam

Minchanka [31]3 years ago

5 0

Answer:

you would need to divide by how many number there is basically just dividing by how many numbers there are

Step-by-step explanation:

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Solve the triangle. B = 36°, a = 41, c = 20

svetoff [14.1K]

Answer:

See below

Step-by-step explanation:

When you have 2 sides and the angle between them you use the cosine theorem or law of cosines:

$b^{2}=a^{2}+c^{2}-2acCos(B)$

$b^{2}=41^{2}+20^{2}-2(41)(20)cos36 \\b^{2}=1681 + 400-1327 \\b^{2}=754 \\b = 27.5$

After you have a side and the opposed angle (side b and angle B), you use the law of sines:

$\frac{a}{sinA} =\frac{b}{sinB}=\frac{c}{sinC}$

I will calculate angle A first:

$[tex]\frac{27.5}{sin36} =\frac{41}{sinA} \\sinA =\frac{41}{27.5} sin36 \\sin A = 0.876 \\A = 61.2\°$ [/tex]

Same for angle C:

$\frac{27.5}{sin36} =\frac{20}{sinC} \\sinC =\frac{20}{27.5} sin36 \\sin C = 0.427 \\C = 25.3\°$

The sum of the angles is 36° + 61.2° + 25.3° = 122.5°; The sum must be 180° so this isnt a triangle.

I re did the problem using B as 63° instead of 36° in case you wrote it wrong and I got a satisfactory answer.

using B = 36:

b = 36.6

angle A = 86.4°

angle C = 29.1°

A+B+C = 86.4° + 29.1° + 63° = 178.5° ~ 180°

5 0

3 years ago

Pick A B or C HURRRRRYYYY PLZ!

Brut [27]

The answer is B, you’re welcome

6 0

3 years ago

Read 2 more answers

What is the median of 8,9,10,1,6,4,7,6

Phoenix [80]

Answer:

The median is 6.5

Step-by-step explanation:

To find the median, first organize the numbers from least to greatest:

1, 4, 6, 6, 7, 8, 9, 10

The median is always the number in the middle, but since there are eight numbers here, there will be two numbers in the middle: 6 and 7.

To solve for this, we have to find the average of the numbers.

Add the two numbers together and then divide by 2 (we divide by 2 because we are averaging two numbers).

(6 + 7)/2

13/2

6.5

8 0

3 years ago

2 3 What is the product of - 7 and 7? 6 0- 6 49 o 49 В

Fudgin [204]

Answer:

-49 is the product of -7 and 7

5 0

3 years ago

Which on the following is equivalent to 1.02 x 10^15 ml?

sveta [45]

Step-by-step explanation:

D) 1.02 × 10⁹ kL

Hope it helps you

4 0

3 years ago