Eventually....at some pont, the captcha robot thingie quits happening....I do not know what the tripping point is.... ~ EP
"An alternative to using semi-log graph paper is to use linear paper. Instead of plotting your linear data vs. the exponential data you would acutally take the log of the exponential data then plot it."
https://web2.0calc.com/questions/college-readiness-factoring-trinomials_2
4x = 3y so x = 3/4 y
7y = 5 z so z = 7/5 y
3/4 y - y + 7/5 y = -46
y=- 40
x = 3/4 y = -30
z= 7/5 y =-56
You're welcome, CR ! Keep after it........
You can use either method....whichever the Q asks you t use....
sec = 1/cos = 1/(adj/hyp) = hyp/adj
From your Q x=3 hyp/adj of the angle x = 3 x/3 of the 42 angle
Multiply first equation by - 1 to get
-5x+4y=4 add this to the second equation to get
-3x=-12 so x = 4
Substitute this value of 'x' in to one of the equations to get 'y'
5(4)-4y = -4
20-4y =-4
-4y = -24 y = 6
Expand right side to get
x^2-5x = 6-4x move r side to left side
x^2 -x-6=0 factor
(x-3)(x+2)=0
x^3-2x^2-15x factor out 'x'
x * x^2-2x -15
x (x-5)(x+3)