So y = 1/3x + 7, therefore the gradient is 1/3 and the y-intercept is 7.
It is called a repeating decimal, it is also a form of rational number.
(2x-7y)(2x-7y)= 4x2-14xy-14xy+49y2
The answer is 4x2-27xy+49y2
He’s error was rather than expanding he squared
Answer:
70 mins
Step-by-step explanation:
Lets first convert the 4.5 hours to minutes. We know that there's 60 mins in an hour, so we can just multiply 4.5 by 60 to get 270 minutes. Now we know the total time spent at the mall.
Then, we can add the times given in the question.
130 mins + 70 mins + walking mins = 270 mins
To solve, simply collect like terms:
200 mins + walking mins = 270 mins
walking mins = 270 mins - 200 mins
walking mins = 70 mins
Answer:
0.45
Step-by-step explanation: