Answer: £51
Step-by-step explanation:
25% off 49 = 36.75
25% off 19 = 14.25
36.75 + 14.25 = 51
2 x pi radians = 360 degrees, [remember this formula]
2 x 3.14 = 6.28 radians = 360 degrees
therefore 1 radian = 360 degree/ 6.28 or 57.32 degrees approx.
3.5 radians is therefore = 57.32 x 3.5 = 200.62
closest answer would be b ) 200.54 degrees
Answer:
C
Step-by-step explanation:
First we simplify what we can in the expressions. 3sqrt(3y) can't be so we leave that. We want to try and get everythig to have sqrt(3y) in it though.
sqrt(27y^5) = sqrt((3^3)y^2y^3) = sqrt(3^2y^4*3y) = 3y^2*sqrt(3y)
y^2*sqrt(75y) = y^2*sqrt(5^2*3y) = 5y^2*sqrt(3y)
So now we have 3sqrt(3y) - 3y^2*sqrt(3y) + 5y^2*sqrt(3y)
If we factor out sqrt(3y) we get (3-3y^2+5y^2)sqrt(3y) = (3+2y^2)sqrt(3y) So that's C
Let me know if you don't get how I did something though and I'll be happy to explain it.
