Answer:
4.39 to 2DP.
Step-by-step explanation:
x * (x - 2) = 28
x^2 - 2x = 28
Solving by completing the square:
(x - 1)^2 - 1 = 28
(x - 1)^2 = 29
x = +/-√29 + 1
x = 6.38516, -4.38516
x must be positive so it = 6.38516.
The shortest side = x - 2 = 4.385.
Answer:
250
Step-by-step explanation:
Answer:
306
Step-by-step explanation:
6² = 36
36 - 2 = 34
Since 5+1+3 is in parenthesis, it comes before multiplication (remember PEMDAS or Order of Operations)
5+1+3 = 9
34 x 9 = 306
12% of $79.68 is $9.56
79.68 - 9.56 = 70.07
7.25% of 70.07 = 5.08
70.07 + 5.08 = 75.15
<em>Have a nice day :)</em>