Answer:
$15, $20
Step-by-step explanation:
Let u represent the unit price of umbrellas and h the unit price of hats.
Case 1: A. spent $80.
Then $80 = 4u + 5($4), or $80 = $20 + 4u, or $60 = 4u, or
u = $15/umbrella.
Case 2: A spent $100.
Then $100 = 4u + 5($4), or $100 = $20 + 4u, or $80 = 4u, or
u = $20/umbrella.
The least A. could have spent on a single umbrella was $15, and the most was $20.
Answer: (2.75-2.40)/(2.75) * 100 [Before rounding to the nearest tenth]
Step-by-step explanation:
Formula for percentage decrease = (old-new)/(old) * 100
so substituting in, you get (2.75-2.40)/(2.75) * 100
From here, you can just plug this into a calculator (don't have on me rn)
Answer:
None of these
Step-by-step explanation:
Apex
Answer:
(2 - x ) = 1 / 10
Step-by-step explanation:
1 / 5 + 2 / 3 (2 - x ) = 4 / 15
Subtract 1 / 5 from both sides
2 / 3 (2 - x ) = 4 / 15 - 1 / 5
2 / 3 (2 - x ) = 1 / 15
Multiply 3 / 2 on both sides
(2 - x ) = 1 / 15 * 3 / 2
(2 - x ) = 1 / 10
