In the triangle shown, determine A to the nearest degree

63 degrees

Step-by-step explanation:

Cosine A= 6/13

Cosine^-1 (6/13) = A

A= 63 degrees

45 degree

Step-by-step explanation:

all interior angles add to 180 on a triangle, you already have 90 degrees in one corner leaving 90 degrees to play with divide by two and you get 45

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.