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saveliy_v [14]
3 years ago
15

Joseph has a collection of Pokemon cards. He has 3 times as many Character cards as he has Energy cards. He has a total of 312 c

ards in his collection. Which equation could be used to determine the amount of Energy cards, e, he has in his collection?
Mathematics
1 answer:
-BARSIC- [3]3 years ago
6 0

Answer:

e = 312/4

Step-by-step explanation:

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Ax - b = c <br><br> Solve for x
7nadin3 [17]

ax - b = c

add b to each side

ax-b +b = c+b

ax = c+b

divide by a

ax/a = (c+b)/a

x = (c+b)/a


3 0
3 years ago
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6 0
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In a survey of 300 house wires. It was discovered
ruslelena [56]

Answer:

46 housewives read all three magazines.

Step-by-step explanation:

Given:

        n(A) = 150

        n(B) = 200

        n(C) = 156

        n(A∩B) = 48

        n(B∩C) = 60

        n(A∩C) = 52

         n(A∪B∪C) = 300

so we know the relation as:

  n(A∪B∪C) = n(A) + n(B) + n(C) - n(A∩B) - n(B∩C) - n(A∩C) + n(A∩B∩C)

∴ n(A∩B∩C) = n(A) + n(B) + n(C) - n(A∩B) - n(B∩C) - n(A∩C)  - n(A∪B∪C)

                    = 150 + 200+ 156 - 48 - 60 - 52 - 300

                   = 46

Hence the number of housewives that had read all three magazine is 46.

8 0
3 years ago
Cathy borrows $3280 at 0.3% simple interest per month. When Cathy pays the loan back 9 years later what is the total amount that
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Answer: Simple interest= Principal× rate× time/ 100

                                  Amount= Simple interest + Principal

Step-by-step explanation:

4 0
3 years ago
Mr.Atkinson has 5 lb of dry fish food. He will put an equal amount of food into 3
Helen [10]

Answer:

5 times 3 =15lb

Step-by-step explanation:

4 0
3 years ago
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