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Scrat [10]
3 years ago
11

If a backpack costs $25, how much will it cost, in dollars, after a 20% discount?

Mathematics
2 answers:
postnew [5]3 years ago
7 0

Answer:

20 dollars

Step-by-step explanation:

the difference  is 5 dollars

Readme [11.4K]3 years ago
6 0

Answer:

20 dollars

Step-by-step explanation:

After 20 percent is taken off there is 80 percent left so...

25 * .8 = 20

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Seth invested a certain amount of money and got back an amount of $ 8400. If
kupik [55]

Answer:

$7700

Step-by-step explanation:

amount invested + interest = total

amount invested + 700 = 8400

Subtract 700 from both sides.

amount invested = 7700

Answer: $7700

5 0
2 years ago
A mouse climbs up a well of 86 meters. It advances 14 meters during the night, but during the day it retreats 2. The mouse will
Deffense [45]

Step-by-step explanation:

we assume day and night are equally long.

and the mouse will start at night of day 1.

then, on day 2, it will first retreat 2 meters (during daylight) and then advance 14 meters (at night).

so, on every full day, the mouse will effectively advance 12 meters (-2 + 14 = 12).

with a starting value of 14 (the first night).

so, we are getting an arithmetic sequence

an = an-1 + c

c = 12 in our case.

a1 = 14

a2 = a1 + 12 = 14+12 = 26

a3 = a2 + 12 = a1 + 12 + 12 = 14 + 2×12 = 38

an = a1 + (n-1)×12 = 14 + 12(n-1)

at what n will it reach 86 ?

86 = 14 + 12(n-1) = 14 + 12n - 12 = 2 + 12n

84 = 12n

n = 7

so, on the 7th day the mouse will reach the surface (if we truly count the first starting night day 1 - this is up to your teacher, but I would).

7 0
2 years ago
The ratio of the number of boys to the number of girls in the class is 1:6. Which statement must describe the class?
geniusboy [140]
Your answers either A or B but im leaning more towards A

: ) have  a nice day
4 0
3 years ago
Read 2 more answers
5 ) ( 8 x 10 - 82 ) - 8​
juin [17]

Answer:

16

Step-by-step explanation:

7 0
3 years ago
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How do i solve this?
vodka [1.7K]

Step-by-step explanation:

all I see is a piece of paper

5 0
3 years ago
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