Answer:
Her mistake was to change the inequality sign from ≥ to ≤.
The sign only changes when you multiply or divide both sides of an inequality by a negative number.
Answer:
The original price is $90.
Step-by-step explanation:
100% - 40% = 60%

y × 60 = 54 × 100
60y = 5400
60y ÷ 60 = 5400 ÷ 60
y = 90
Step-by-step explanation:
2*22/7*4..7=29.54285714
Answer:
-9
Step-by-step explanation:
36 ÷ (1 - |2 - 7|) =
Start with the calculation inside the absolute value.
= 36 ÷ (1 - |-5|)
Now take the absolute value of -5 which is 5.
= 36 ÷ (1 - 5)
Do the operation inside the parentheses, 1 - 5 = -4.
= 36 ÷ (-4)
Finally divide. Remember that positive divided by negative is negative.
= -9
36 is the answer yes yes yes