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vaieri [72.5K]
3 years ago
8

Isabel purchased a prepaid phone card for $20. Long-distance calls cost 18 cents a minute using this card. Isabel used her card

only once to make a long-distance call. If the remaining credit on her card is $14.24, how many minutes did her call last?
Mathematics
1 answer:
Mandarinka [93]3 years ago
7 0

Answer:

20 - .07c = 17.13

20 - 17.13 = 2.87

2.87/7 = 41

Her call took 41 minutes

Step-by-step explanation:

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A teacher decides to purchase a new car and considers two options. Option one is the new Zoomba for $60,000 with an expected dep
Lady bird [3.3K]

The teacher chose option 2, the Starfish and it was valued at $35,200 after two months.

Step-by-step explanation:

Step 1; The Zoomba is priced at $60,000 and has an expected depreciation of 2% per month. So the annual depreciation is 12 months * 2% per month = 24% per year. The teacher plans to keep either car for two years do total depreciation is 2 years * 24% depreciation per year = 48 % in two years.

Value of car after two years = Buying price - Depreciation amount

= $60,000 - 48% of $60,000 = $60,000 - 0.48*$60,000 = $31,200

The car will be valued at $31,200 after two years. To determine how much value it has retained we divide the value in two years to the current value i.e $31,200 divided by $60,000 which equals 0.52 (52% of initial price)

Step 2; The Starfish is priced at $40,00 and will depreciate $200 every month. For a year it will depreciate 12 months * $200 per month = $2,400 a year. So for a total of two years a depreciaition of $4,800.

Value of car after two years = Buying price - Depreciation amount

= $40,000 - $4,800 = $35,200

The car will be valued at $35,200 after two years. To see the retained value we divide the depreciated value by the current value i.e. $35,200 divided by $40,000 which equals 0.88 (88% of the initial price)

Step 3; Of the two options, the Starfish retains more of its value over two years. So the teacher chose the Starfish over the Zoomba.

7 0
4 years ago
Joe wants to buy a $180 number that's on is on sale the snowboard is 30% off what is the sale price of the snowboard (show work
Yuri [45]

Answer:

Step-by-step explanation:

Assuming that the Skateboard is $180, and you are asking for the price when it is 30% off.

180 * .70 = $126

Another way of solving the question is finding 10 % of 180, which is 18. And you are looking for 30% less, so 18 * 3 = 54, which is 30% of 180.

180 - 54 = 126

6 0
3 years ago
Read 2 more answers
The school that Amanda goes to is selling tickets to a spring musical. On the first
olya-2409 [2.1K]

Answer:

Senior citizen ticket: $3

Student ticket: $9

Explanation:

Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)

8 0
3 years ago
What is the height of a trapazoid with an area of 9m squared and bases that measure 2.4 m and 3.6 m
kifflom [539]
The formula of the area of a trapezoid is equal to:
Area = (a+b) / 2 * h

Substituting the values.
9 = (2.4 + 3.6) / 2 * h
9 = 6 / 2  h
9 = 3h
h = 3

So the height of the trapezoid is equal to 3m.
5 0
3 years ago
6x what equals 72<br> I really need help on my math today
gayaneshka [121]
6 times a number is 72.
Divide 72 by 6 to get the number.
72/6=12

Check:
6 x 12=72

Hope this helps. 
7 0
3 years ago
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