Answer:
Step-by-step explanation:
Angle C is ...
C = 180° -A -B = 180° -60° -30° = 90°
This is a right triangle with hypotenuse length 14.
a = c·sin(A) = 14·sin(60°) = 7√3
b = c·sin(B) = 14·sin(30°) = 7
The remaining sides are b=7 and a=7√3.
The polynomial representing the area of the is 49n² - 25
<h3>How to determine the polynomial</h3>
The formula for area of a square is expressed as;
Area = a²
Where a is the side length
From the image shown, we can see that the side length takes the value (7n - 5)
Substitute the value into the formula
Area = a²
Area = (7n - 5)²
Area = (7n - 5) ( 7n + 5); this is so because of the difference of two squares
Expand the bracket
Area = 49n² + 35n - 35n - 25
collect like terms
Area = 49n² - 25
Thus, the polynomial representing the area of the cube is 49n² - 25
Learn more about a square here:
brainly.com/question/24487155
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Use substitution
From second equation:-
x = 13 - 5y, Substitute for x in the first eqaution:
(13 - 5y)^2 + y^2 = 13
169 -130y + 25y^2 + y^2 - 13 = 0
26y^2 - 130y + 156 = 0
26(y^2 - 5y + 6) = 0
26(y - 3)(y - 2) = 0
y = 2 , y = 3
From the second equation when y = 2, x = 13 - 5(2) = 3
and when y = 3, x = 13 - 5(3) = -2
So the solution is [3, 2} and {-2, 3}
x=2 :)
2x+1-1=5-1
2x=4
2/2x=4/2
x=2
if you do the opposite on one side you gotta do it on the other :)))
Hello. you shouldn't have people do your work full at a time.
