Can somebody help me with this aswell please?

1) 39 2) 18

Step-by-step explanation:

You can check by the calculator, if you want to do it by hand there is the solution:

12 + 9^2/3 = 12 + 81/3 = 12 + 27 = 39 (Notice, you need to do multiplication first then adding or subtracting)

(8+6^2)/11 + 7 * 2 = (8 + 36)/11 + 14 = 44/11 + 14 = 4 + 14 = 18.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.