Please answer questions math help ( please show work)

a) n = 1.8

b) n = 12

Step-by-step explanation:

use cosine for both ⇔ cos =

part a:

⇒ cos 75 =

cos of 75 is 0.2588

⇒ 0.2588 =  

multiply 7 on both sides

⇒ 0.2588 x 7 =   x  

⇒ n = 1.8

part b:

⇒ cos 57 =

cos of 57 is 0.5446

⇒ 0.5446 =

multiply 22 on both sides

⇒ 0.5446 x 22 = x 22

⇒ n = 12

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?

easy its decreasing

step-by-step explanation:

because its top point is at the to of the graph on the left side (atleast from the veiw i see it) now if that top point wast in the lower part of the graph it would be increasing hope this have a nice day