What is the slope of the line that is perpendicular to the line whose equation is 2x-y=7? -2
-1/2
1/2
2

-1/2

Step-by-step explanation:

2x-y=7

y=2x-7

This line has a slope of 2, a line perpendicular to this line will have a reciprocal number to the slope of this line.

Which means another line is perpendicular to this line will have a slope of -1/2

i think it would be 42cm

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.