Actually, no. To write more zeros after 0.12 would indicate a false level of precision. For instance, If you can only measure something to be 0.12 (not 0.120), the true value could be something like 0.124 or 0.116. Writing 0.120 could very well be wrong.
but the answer is correct. Perhaps word problems are such a lost art that feelingindifferent is unable to determine the implied brackets and the question does have value.
Unless you state that there are brackets in the correct places then it is correct, but the question itself does not mention brackets so naturally it must follow the order - BIDMAS
Brackets, Indices, Division, Multiplication, Addition and Subtraction.
Well, that's sort of the challenge of the question. -28 isn't an answer, so you've got to figure that you did it wrong if that's what you come up with. Multiplying by 13, then adding 17 isn't ambiguous, though -- that's just wrong, since the question says "the sum of."
You only perform them in that order when they are notated using standard mathematical notation. Since this is a worded equation, it can be interpreted any number of ways, but most worded equations are read left to right.
square root and if we were asked simply, "What is the square root of 49? ... PERFECT SQUARES: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225.
*Gömböc