Answer:
r=−9.403283,−6.348173,0.751456
Step-by-step explanation:
Let's solve your equation step-by-step.
7(r3+15r2+48r−44)=r+6
7r3+105r2+336r−308=r+6
Step 1: Subtract r+6 from both sides.
7r3+105r2+336r−308−(r+6)=r+6−(r+6)
7r3+105r2+335r−314=0
Step 2: Use cubic formula.
r=−9.403283,−6.348173,0.751456
Answer:
3 : 8
Step-by-step explanation:
cross multiply
8x = 3y
x = 3/8
x : y = 3 : 8
7x^-8 * 6x^3 = (7 x 6)x^(-8 + 3) = 42x^-5 = 42/x^5
70 degrees, hope this helped.