Lia does 70 dishes in 1 week because there are 7 day in a week so you multiply 7 x 10 which equals 70
Each of A, C, and D are rational, so presumably B is the answer here.
A is rational, since
, so
.
C is also rational. If
, then
. This would mean
, and so
.
D is rational by a similar argument. If
, then
. So,
, which means
.
Answer:
Pencil: $0.60 Rubber: $0.48
Step-by-step explanation:
Let the cost of a pencil be p and the cost of a rubber be r.
(Equation 1)
(Equation 2)
Divide both sides by 4:
Substitute this into Equation 1:
Multiply both sides by 4:
Divide both sides by 9:
Since r + p = 1.08,
Answer:
A. & D.
Step-by-step explanation:
A. 8x + x = 9x
B. 9x + x = 10x
C. 10 - x = 10 - x (not like terms)
D. 5x + x + 3x = 9x
E. 7x + x + 2x = 10x
Answer:
(-5, 9)
Step-by-step explanation:
for a 180 degree rotation the points move from (x, y) to (-x, -y)