If you have 5000 per 125 mcg and need 7140 how many mcg do you need?

178.5mcg

Step-by-step explanation:

If you need 5000 per 125mcg, we can express it as;

5000 = 125mcg

To get the amount of mcg needed for 7140, we will say;

7140 = x mcg

Divide both expression

5000/7140 = 125/x

Cross multiply

5000x x= 7140 * 125

5000x = 892,500

x = 892,500/5000

x = 178.5

Hence the amount og mcg needed is 178.5mcg

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.

2x + 8

step-by-step explanation: