Answer:
4
Step-by-step explanation:
The diagonals are equal length:
The cross-section of a square pyramid will be a square. The section above the cross-section taken will basically be a similar but smaller square pyramid. D is the correct answer.
Let 's' represent the amount of sales.
Plan 1:
Plan 2:
Equating the two plans together and solving for the amount of sales,
Collecting like terms,
Divide both sides by 0.08,
Hence, the amount of sales is $8,750.
We know that
if <span>4 electricians can complete a job in 8 hours
then
</span>100% of a job -------> 8 hours
x------------------> 1 hour
x=100/8----> x=12.5%
divide by 4 electricians
12.5%/4-----> 3.125%
that means each electrician can complete 3.125% of a job in 1 hour
therefore
3 electricians-----> 3*3.125%----> 9.375% in 1 hour
so
9.375%-----------> 1 hour
100%--------------> x
x=100/9.375----> x=10.67 hours
the answer is
10.67 hours
