Answer:
A on E2020--All repairs requiring 1 hour or less have the same labor cost.
Step-by-step explanation:
I hope this is correct, if not let me know and I will fix it. I'm sorry in advance if this is incorrect.
by the use of elimination method
make all coefficients of subject to be eliminated similar..by multiplying the coefficients with one another
for eqn(i)
5(-10y+9x=-9)
-50y+45x=-45
for eqn(ii)
9(10y+5x=-5)
90y+45x=-45
-50y+45x=-45
90y+45x=-45
...subtract each set from the other...
we get
-140y+0=0
y=0
from eqn(i)
10y+5x=-5
0+5x=-5
x= -1
11 chicken and 6 pigs is the answer
2 x 11 + 4 x 6 = 46 legs
11 + 6 = 17 heads
Answer:
3 minutes
Step-by-step explanation:
d=3t is our formula.
d being the distance (9 inches for this problem)
t is the time in minutes
Substituting our known information would make our equation look like:
9 = 3t
to solve for t we divide both sides of the equation by 3
9/3 = 3t/3
3 = t
So if a snail travels 3 inches per minute, it will have traveled 9 inches in 3 minutes.
Answer:
13 3/4
Step-by-step explanation:
2 3/4 is 11/4 when converted into an improper fraction.
5 is 5/1 when converted into a fraction.
11*5 is 55 (numerators)
4*1 is 4 (denominators)
55/4 is 13 with 3/4 remaining
13 3/4
