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Mamont248 [21]
3 years ago
8

Cos A+cosB+CosC=1+4sinA/2*sinB/2*sinC/2

Mathematics
1 answer:
Scrat [10]3 years ago
5 0
Socratic use det app
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Gnesinka [82]

Answer:

3

lkfbnrld/kgnvr/slkbvluydcfgiufhvgukrghoudgb

8 0
3 years ago
PLEASE HELO ASAP ITS DUE IN 5 MIN!!!!
professor190 [17]

Answer: The second one which is x > 15

6 0
3 years ago
Why is it helpful to rewrite inequalities
mr_godi [17]

Answer:

  that puts the solution in the form ...

     variable is ...

Step-by-step explanation:

It isn't always.

__

Often, we like to have a solution be in the form ...

  variable is ...

So, for an inequality, that puts the variable on the left:

  x > 3

  y < 27

__

Personally, I like to see the answer in a form that has the variable and its values in the same relation as on a number line. This means, my preferred inequality symbols are < or ≤, since those have the smaller numbers on the left. I would write the first example above as ...

  3 < x

showing that the shaded portion of the number line (representing possible values of the variable) is to the right of the open circle at 3. For me, it is more mental effort to translate x > 3 to the same image.

__

The forms we choose to use are all about making communication as easy as possible.

7 0
3 years ago
Endpoint: (-4, 8), midpoint: (3,-4)<br><br> Find the other endpoint<br><br> Explain please
swat32

Answer: (10,-16)

Step-by-step explanation:

A(-4,8)\ \ \ \ C(3,-4)\ \ \ \ \ B(x_B,y_B)=?\\

See the graph below.

                             \displaystyle\\\boxed {x_C=\frac{x_A+x_B}{2} }\\\\

Multiply both parts of the equation by 2:

2x_C=x_A+x_B\\2x_C-x_A=x_A+x_B-x_A\\2x_C-x_A=x_B

Hence,

x_B=2*3-(-4)\\x_B=6+4\\x_B=10

                            \displaystyle\\\boxed {y_C=\frac{y_A+y_B}{2} }

Multiply both parts of the equation by 2:

2y_C=y_A+y_B\\2y_C-y_A=y_A+y_B-y_A\\2y_C-y_A=y_B

Hence,

y_B=2*(-4)-8\\y_B=-8-8\\y_B=-16\\Thus,\ B(10,-16)

4 0
2 years ago
In 1999, the share price for General Motors stock was $144 per share but has been declining at an average rate of 14% per year.
vodomira [7]

Answer:  $5.22  (in the year 2021)

========================================================

Explanation:

The year 2021 is 22 years after 1999 since

2021 - 1999 = 22

That means we'll plug x = 22 into the equation given to us

P = 144*(0.86)^x

P = 144*(0.86)^22

P = 5.21588994768589 which is approximate

P = 5.22 rounding to the nearest cent

The share price is about $5.22 in the year 2021.

This assumes that the 14% decline keeps happening year after year; however, in reality, stocks are more complicated and fluctuate more randomly if anything.

7 0
3 years ago
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