CPhill

I'm afraid I don't understand your question.......

7.5 x .50   = $3.75

For the first one, we can use the Law of Cosines  to find the side length, s

s^2  = (2*12^2) - (2*12*2)* cos 72       

s^2  = about 199  ....   take the square root of both sides

s =  about  14.1

We can use the Law of Sines to find angle B

sinB/ 20 = sin50 / 30

sin^-1(20sin(50) / 30) = B = about 30.7°

And angle C = 180 - 50 - 30.7 = 99.3

And side c can be found by using the Law of Sines, again

c sin 99.3 = 30 / sin 50

c = 30 sin 99.3 / sin 50 = about 38.65

Since we have an SSA situation, we can see if we have another possible truangle, thusly :

Subtract angle B from 180 = 180 - 30.7  = 149.3

And when we add this to the known angle of 50 we have more than 180°, so no second triangle exists.

Thanks, radio.......

The constant of proportionality is 6.......she runs 6 miles per every hour.....no matter the time......

The cosecant is the reciprocal of the sine

The sin(120)  = √3/2  

So.....csc(120) = 2/ √3

2 + 3/5 =    13/5

So we have

13/5 - 2/7      the common denominator is 35....so...

91/35 - 10/35 =

81/35  =

2 + 11/35 

3^-3 * 3⁸  =   3⁵    =   243

b-the object is moving closer to its starting position most quickly between E and F .....the slope between these two points is (-3/2)

Between A and B, the object is moving away from its starting position

Between C and D the object is moving away from its starting posiyion, but not as fast as between A amd B

Between D and E, the object is moving towards its starting position