Answer:
(A)
Step-by-step explanation:
(D) is already out since the teachers may have favorites or unfavorites.
(C) is already out since you can't be in all the halls at once.
There is only (A) and (B).
I think it's (A) and not (B) because it might not be a classes/grades library day.
Answer:
2.4 cans cost 47.4
If you cannot buy 2.4 cans, you must buy 3 cans, then you'll pay 59.25
Step-by-step explanation:
The lawn has trapezoidal shape, so find the area of the trapezoid using formula
In the diagram, ABED is rectangle, so BE = 12 m, thus ED = 20 m - 12 m = 8 m.
Consider right triangle EDC. By the Pythagorean theorem,
Thue,
Height = 15 m
Find the midline:
Hence,
One can cover 
to cover 
is needed
cans
One can costs 19.75, so 2.4 cans cost
If you cannot buy 2.4 cans, you must buy 3 cans, then you'll pay
Answer:
It the 3rd one it's correct cuz i worked it out
Can i have a brainliest please!!:)
Step-by-step explanation:
solve your system by substitution.
c+3d=8;c=4d−6
Rewrite equations:
c=4d−6;c+3d=8
Step: Solve c=4d−6for c:
c=4d−6
Step: Substitute4d−6forcinc+3d=8:
c+3d=8
4d−6+3d=8
7d−6=8(Simplify both sides of the equation)
7d−6+6=8+6(Add 6 to both sides)
7d=14
7d
7
=
14
7
(Divide both sides by 7)
d=2
Step: Substitute2fordinc=4d−6:
c=4d−6
c=(4)(2)−6
c=2(Simplify both sides of the equation)
Answer:
c=2 and d=2
Answer:
Step-by-step explanation:
