Answer:
Saved Money = 189.47
Step-by-step explanation:
find the sum percent of how much he spent:
30% + 40%+ 25% = 95%
Given That:
95% = 3600
So, he saved only 5%
5% = 3600/19 = 189 pounds
Hope this helps
Answer:
6
Step-by-step explanation:
Cost per item is found by dividing the cost by the number of items. If the woman bought n items for $120, the cost of each item is $120/n. If the woman bought 24 more items, n+24, at the same price, then the cost per item is $120/(n+24). The problem statement tells us this last cost is $16 less than the first cost:
120/(n+24) = (120/n) -16
Multiplying by n(n+24) gives ...
120n = 120(n+24) -16(n)(n+24)
0 = 120·24 -16n^2 -16·24n . . . . . . subtract 120n and collect terms
n^2 +24n -180 = 0 . . . . . . . . . . . . . divide by -16 to make the numbers smaller
(n +30)(n -6) = 0 . . . . . . . . . . . . . . factor the quadratic
The solutions to this are the values of n that make the factors zero: n = -30, n = 6. The negative value of n has no meaning in this context, so n=6 is the solution to the equation.
The woman bought 6 items.
_____
Check
When the woman bought 6 items for $120, she paid $120/6 = $20 for each of them. If she bought 6+24 = 30 items for the same money, she would pay $120/30 = $4 for each item. That amount, $4, is $16 less than the $20 she paid for each item.
The answer would be 620000
Answer:
Write the following numbers in order from smallest value to largest value: 1.75, 1. Justify your answer. 4. If 2x2 – x + 6 is subtracted from x2 + 3x – 2, ...
Step-by-step explanation:
1. Which number is irrational?
(A) (B) (C) 0.3333 (D)
2. In which group are the numbers arranged in order from smallest value to largest value?
(A) π, 3.14, (B) 3.14, π
(C) , 3.14, π, (D) 3.14, , π,
3. Write the following numbers in order from smallest value to largest value:
1.75, 1
Justify your answer.
4. If 2x2 – x + 6 is subtracted from x2 + 3x – 2, the result is
(A) x2 + 2x – 8 (B) x2 – 4x + 8 (C) –x
2 + 2x – 8 (D) –x
2 + 4x – 8
