Evaluate or slove each expression [11+(20÷10)]×7

PEMDAS, you can do a quick search on google for images only, there are some nice pictures of it you might like.

we do the grouping first, from innermost to outmost, and peMDAS, we do MD before any AS.

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.