We first must find the value of angle z.
Angle z = 90° - 42°
Angle z = 48°
We now use the sine function to find y.
sin(48°) = 35/y
y = 35/sin(48°)
y = 47.0971455362
We now round off to two decimal places.
y = 47.10
I hope this helps....
7 is a prime number, 72 is not a prime number.
Hope this helped!:)
Answer:

Step-by-step explanation:
Given



Required
Determine the length of a
Solve for c in 



Substitute
and
in 



Solve for 4b


Solve for b


Recall that: 


You set 49 equal to 8x - 15
So
8x - 15 = 49
+15 + 15
8x = 64
Then divide by 8
X= 8