Ageologist found two underground wells that contained large deposits of water. the first well was 46 2/3 meters below the surface. the second well had more water, and was 77 5/6 meters deeper than the first well. how deep below the surface was the second well?

Second well was   deep below the surface.

Step-by-step explanation:

Given:

Depth of First well =

can be Rewritten as

Depth of First well =

Also Given:

The second well had more water, and was  deeper than the first well.

can be Rewritten as

Hence We can say that;

Depth of second well is equal to   plus Depth of First well.

framing in equation form we get;

Depth of second well =

Now the denominators are common so we can solve the numerators

now to solve the fractions we need to make the denominator common we will use L.C.M we get;

Depth of second well =

Now the denominators are common so we can solve the numerators.

Depth of second well =

Hence Second well was deep below the surface.

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

copy and paste, put it in google

7 weeks

step-by-step explanation:

convert each fraction to the least common multiple of 20, so 3/4 = 15/20 & 1/10 = 2/20, then divide 15 by 2 and you get a little over 7, so the food will last 7 weeks.