Round to the nearest tenth

13

Step-by-step explanation:

a

a²=c²-b²

√a²=√c²-b²

a=√14²-6²

a=12.65~13

answer=13

Step-by-step explanation:

40 minutes

step-by-step explanation:

add the time and multiply by 2

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.