Answer:
the error is that you have passed the negative sign alongside with the 0.8 but you have corrected by putting the -0.8 in the parentheses. if you used a computer check your answer something that could have messed up was the negative sign on the right side of the r in the part where It says r=12.6+(-0.8)
Answer: 10
Step-by-step explanation: Combine like terms for y, so add then you get 10.
12 x b = 480
12 x 40 = 480
The answer is 40
The number is x
x of 55% = 94
x * (55/100) = 94
x = 9400 / 55
x = 170.91
I think you can use cosine rule if only the lines that form the <52 are equal.
