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postnew [5]
3 years ago
14

Isaac bought seven new magic cards to add to his collection this year the next day he gave half his entire collection to his fri

ends there are now only 21 cards left how many cards did he start with
Mathematics
2 answers:
Klio2033 [76]3 years ago
8 0
21x2= 42 + 7 =49
I think this would be the answer
OverLord2011 [107]3 years ago
3 0

Answer:

35 cards

Step-by-step explanation:

21x2=42

42-7=35

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3 1/2+ 5 3/8 can you solve please
Sunny_sXe [5.5K]

Answer:

71/8

8.875

8 7/8

Step-by-step explanation:

8 0
4 years ago
[X + y] + 3w? Helpppppp
lana [24]

Answer:

x+y+3w

Step-by-step explanation:

7 0
3 years ago
Linda is one of 8 teachers in the Mathematics department. In how many different ways can three of the teachers be chosen so that
Alexxx [7]

Answer:

21 ways

Step-by-step explanation:

a, b, c, d, e, f, g, linda

1    2   linda  

a__ b__ __

a__c __ __

a__d __ __

a__ e__ __

a__ f__ __

a__ g__ __

b__c __ __

b__d __ __

b__ e__ __

b__ f__ __

b__ g__ __

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e__ f__ __

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4 0
3 years ago
Can someone please answer the following questions step by step?
Juliette [100K]
I can’t really explain but this is my working step by step, hope u can understand and see if it helps you :)

4 0
3 years ago
A bank pays 5% interest compounded annually. What principal will grow to $12,000 in 10 years.
makvit [3.9K]
<h3>Answer: 7366.96 dollars</h3>

========================================================

Use the compound interest formula:

A = P(1+r/n)^(n*t)

where in this case,

A = 12000 = amount after t years

P = unknown = deposited amount we want to solve for

r = 0.05 = the decimal form of 5% interest

n = 1 = refers to the compounding frequency (annual)

t = 10 = number of years

-------

Plug all these values into the equation, then solve for P

A = P(1+r/n)^(n*t)

12000 = P(1+0.05/1)^(1*10)

12000 = P(1.05)^(10)

12000 = P(1.62889462677744)

12000 = 1.62889462677744P

1.62889462677744P = 12000

P = 12000/1.62889462677744

P = 7366.95904248911

P = 7366.96

6 0
3 years ago
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