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never [62]
3 years ago
11

If 0 lies in the quadrant IV. What can be the value of cos 0?​

Mathematics
2 answers:
marissa [1.9K]3 years ago
4 0

Answer:

D

Step-by-step explanation:

Since Θ is in the fourth quadrant where cosΘ > 0

The only positive values are B / D

since 0 < cosΘ < 1

\frac{\sqrt{41} }{5} > 1 then

D is the appropriate response

OLga [1]3 years ago
3 0

Answer:

D

Step-by-step explanation:

option A and B can not be because square root of 41 is irrational number option C can not be because in 4th quadrant cos is positive so option D is correct.

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There are 8 girls and 12 boys in your class. Based on the current ratio of girls to boys, what is the probability that a new kid
anyanavicka [17]

Answer:

Boy

Step-by-step explanation:

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3 0
3 years ago
5x - y + z = -6<br> 2x + 7y + 3z = 8<br> x + 2z = 6
BabaBlast [244]

Answer:

Step-by-step explanation:

The system of equations given are:

 

 5x - y + z = -6   ------------- i

 2x + 7y + 3z = 8  ---------- ii

  x + 2z = 6 ----------------- iii

Let us deal with equation i and ii first since they have 3 variables x, y and z;

      5x - y + z = -6                 x 7

       2x + 7y + 3z = 8            x 1

    35x  - 7y + 7z  = -42   ----  iv

      2x  + 7y + 3z  = 8       ---- v

Add equation iv and v;

    37x + 10z  = -34 ------vi

So, let us solve equation vi and iii:

               x + 2z = 6 - ---------- iii   x 10

               37x + 10z  = -34  --- iv  x 2

    10x + 20z   = 60         vi

     74x + 20z  = -68        vii

Subtract vi  - vii;

      -64x  = 128

          x  = -2

So;    put x  = -2 into iii;

           x + 2z  = 6

           -2 + 2z  = 6

            2z  = 6 + 2  = 8

           z  = 4

Put x  = -2 and z = 4 into equation i;

  5(-2) - y + 4  =  - 6

   -10 -y  +4  = -6

       -6  - y  = -6

             -y  = 0

              y  = 0

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3 years ago
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Answer: Rosie is incorrect because she needs to do the exponent before subtracting.
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. A television is advertised for sale at 33% off. The original price is x dollars. (a) Write two different equivalent expression
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Answer:

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Step-by-step explanation:

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