x^2 + 11 = 60 {11 is added to the square of a number to get 60}
x^2 = 49 {subtracted 11 from both sides}
x = 7 or -7 {took square root of both sides}
the numbers are 7 and -7
Use the circle theorem, that is a great tip!
I would say yes, it is easier to subtract numbers when they are above and below each other because that ways you can easily borrow from the places in front of the number and rewrite without problems. It also helps keep the math more organized so that your work does not confuse you.
Hope this helps c:
Answer:
he will walk about 8 miles
Step-by-step explanation:
