Answer:
it has to be b I don't know for sure tho
Answer: x=50°
Step-by-step explanation:
For this question, you have to first find out whether you are using Sin, Cos or Tan.
To help you find out which one you are using you can use SOH CAH TOA to help you:
SOH-the 'S' is for Sin then the 'O' and the 'H' is for Opposite over Hypotenuse.
CAH-the 'C' is for Cos and then the 'A' and the 'H' is for Adjacent over Hypotenuse.
TOA-the 'T' is for Tan then the 'O' and the 'A' is for Opposite over Adjacent.
In this, because you have the Hypotenuse (the length opposite the right angle) and the Adjacent (the length next to the angle you are finding) you would be using Cos.
So first you would write:
Cos x=59/91
But then because you want x on it's own you would do the inverse. So, instead of multiplying x by cos you would have to do cos-1 (the inverse of cos). This would be written as:
x=cos-1 59/91
To get the answer you would have to put this in your calculator.
So x=50°
Hope this helps :)
Answer:
y = 6x-4
Step-by-step explanation:
3x - 1/2 y =2
We need to solve for y to get the equation in slope intercept form
Subtract 3x from each side
3x-3x - 1/2 y =-3x+2
-1/2 y = -3x+2
Multiply each side by -2
-2*-1/2 y = -2*(-3x+2)
y = -2*(-3x+2)
Distribute
y = 6x-4
The slope is 6 and the y intercept (where it crosses the y axis) is -4
Barrel is assumed to be a cylinder
surface area of a cylinder=2 caps+lateral area
so
SA=2pir^2+2hpir
h=8
r=8
SA=2pi8^2+2(8)pi8
SA=2pi64+128pi
SA=128pi+128pi
SA=256pi square feet or aprox
SA=804.248 square feet is the surface area of 1barrel