Answer:
To solve for the trigonometric functions of x, we need to recall the ratios they represent as shown below.
sin x = O/H
cos x = A/H
tan x = O/A
where O stands for opposite, A for adjacent, and H for hypotenuse. So, for example, the sine of x is equal to the side opposite of angle x over the hypotenuse. The same goes for cosine and tangent. Using the diagram attached, we have the expressions of the trigonometric functions as shown below.
sin x = f/d
cos x = e/d
tan x = f/e
Step-by-step explanation:
Answer:
The variable that needs to be eliminated in these systems of equations are 3x
Step-by-step explanation:
-3x + 4y = -50
3x + 3y = -6
*solve from top to bottom, if that makes sense, so add 3x to -3x, 4y to 3y, and -50 to -6.*
0 + 7y = -56
7y = -56
*divide by 7 to get y alone*
y = -8
plug y into one of the original equations to get x
-3x + 4y = -50
-3x + 4(-8) = -50
-3x - 32 = -50
+32 +32
-3x = -18
x = 6
Answer:
It is an iscoceles trapezoid but, one corner is unnoticeably off by 1. I think it would still be an iscoceles trapezoid.
Step-by-step explanation:)
Answer:
A) 5x + 2y = 13
B) -9x + 7y = 19 We'll multiply equation A) by -(7/2)
A) -35/2 x -7y = -(91/2) then we'll add equation B)
B) -9x + 7y = 19
-53/2x = -53/2
x = 1
2y = 13 -5
y = 4
Step-by-step explanation: