B. 6.6 kg explanation: 4 x 8.25 = 33 divded by 5 is 6.6
Answer:
4y = -x + 9
Step-by-step explanation:
2y = 8x - 6
Divide through by 2:-
y = 4x -3 so the slope of this line = 4
Slope of the line perpendicular to this = -1/4
So using the point/slope form of an equation of a line and the point (-3,3) we have:-
y - 3 = -1/4(x - -3)
y = -1/4x - 3/4 + 3
y = -1/4 x + 9/4 Multiply through by 4:-
4y = -x + 9
R and 81 are common factors so add them together and you get 9r;then your equation is 9r+11=29.After that you subtract 11 from 29 and then the equation is 9r=18.Then you divide 9 from 18 so you get r=2.
We are asked to prove tan(θ / 2) = sin θ / (1 + cos θ). In this case, tan θ is equal to sin θ / cos θ. we can apply this to the equality. sin θ is equal to square root of (1-cos θ)/2 while cos θ is equal to <span>square root of (1 + cos θ)/2.
Hence, when we replace cos </span><span>θ with </span>square root of (1-cos θ)/2, we can prove already.