Answer:
The slope will be y=-20/8x +17.5
Step-by-step explanation:
I hope this Helped
By solving through law of cosines the length s can be written as
.
Given the length of US is 9, the length of ST is 10 and the length of UT is s and the angle UST is 100 degrees.
According to law of cosines a length can be written as 
where c is the side opposite to the given angle and a and b are other sides , g is the angle given.

where s is the length of the side opposite to the angle given, the length of other sides are 9 and 10 where the angle is 100.
Hence the fourth option is correct which is s^{2} =9^{2} +10^{2} -2*9*10cos(100).
Learn more about trigonometric functions here brainly.com/question/24349828
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Answer:
x=24
Step-by-step explanation:
Step 1: Add 3 to both sides: 1/2x-3+3=9+3
Simplify that: 1/2x=12
Step 2: Multiply both sides by 2: 1/2x*2=2*12
Simplify: x=24
Hope this helped! :)