sqrt(-4) * sqrt(-25).
we know that the sqrt(a) sqrt(b) = sqrt(ab)
trang needs to plant 133 shrubs on friday to finish the job.
with the given data in the problem, we can set up an equation with a variable to solve for the number of shrubs that trang will need to plant on friday. using a model:
m t w th f total
84 92 87 104 ? 500
since we don't know the amount of shrubs on friday, we can make this our variable 'x'. so, the following equation can be used to find 'x':
84 + 92 + 87 + 104 + x = 500
combine like terms: 367 + x = 500
subtract 367 from both sides: 367 + x - 367 = 500 - 367
solve for 'x': x = 133, which is the number of shrubs that need to be planted on friday to finish the job.