Simply substitute the value of a in the question
0.04
X less than or equal to -7 is the answer. I drew a graph of what it should look like. The graph contains every value of x that is either equal or less than -7, which is the shaded part.
Answer:
c = 43
Step-by-step explanation:
sin theta = opposite side / hypotenuse
sin 28 = 20/c
Multiply each side by c
c sin 28 = 20/c *c
c sin 28 = 20
Divide each side by sin 28
c sin 28 /sin 28 = 20/sin 28
c = 42.60108936
To the nearest whole number
c = 43