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11Alexandr11 [23.1K]
3 years ago
11

Can somebody help me. Will Mark brainliest.

Mathematics
1 answer:
cricket20 [7]3 years ago
4 0

Answer:

around 81.2 degrees

Step-by-step explanation:

use inverse tangent

remeber tan = O/H

divide it first

84/13

6.461538461538462

then use invese tan(tanx^{-1})

81.20258929000894

or around 81.2 degrees

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Find x. Round to the nearest degree.
jeka94

The Law of Cosines features the 3 side lengths of a triangle, plus the measure of the angle opposite one of those sides.


We want angle x, which is opposite the side of length 39.


Then: a^2 = b^2 - 2ab cos C becomes 39^2 = 36^2 + 59^2 - 2(36)(59)cos x


or 1521 = 3481 + 1296 - 2(36)(59) cos x


Subtract (3481+1296) from both sides: 1521 - 4777 = -4248cos x

-3256 = -4248cos x

-3256

Then: cosx = --------------- = 0.766

-4248


Solving for x: x = arccos -0.766 = 0.698 radian, or 40 degrees (answer)

5 0
3 years ago
What is the radius of circle with the equation (x - 2)^2 + (y - 1)^2 = 9 *<br> 18<br> 9<br> 81<br> 3
Free_Kalibri [48]

Answer:

3

Step-by-step explanation:

5 0
3 years ago
Determine whether the relation describe c as a function of w.
Delicious77 [7]

Answer:

Function:

c = f(w) = 0.49, 0 < w ≤ 1

            = 0.70,  1 < w ≤ 2

            = 0.91, 2 < w ≤ 3

Step-by-step explanation:

Yes, the relation described can be interpreted as a function.

Here, c is the cost of a mail letter. c depends upon w, which is the weights of the mail letter.

As described in the question, the relation can be expressed as a function.

c can be expressed as a function of w in the following manner:

c(cost of mail) = f(w), where w is the independent variable and c is the dependent variable

c = f(w) = 0.49, 0 < w ≤ 1

            = 0.70,  1 < w ≤ 2

            = 0.91, 2 < w ≤ 3

where, c is in dollars and w is in ounces.

5 0
3 years ago
Can anyone help me with this please <br> I’ll mark you as a brainliest.
Alenkasestr [34]
Its 43. All triangles add to 180 so 47 + 90 = 137. then subtract 180 - 137 and get 43
7 0
2 years ago
Read 2 more answers
Can anyone help me please
Lena [83]

Answer:

$55.24

Step-by-step explanation:

Add $32.78 + $27.24 + $5.22

= 65.24

Subtract 10

= $55.24

4 0
3 years ago
Read 2 more answers
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