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VMariaS [17]
3 years ago
6

A comic costs $3 and a mystery series costs $5 each.If Ken spend all his money on the comics, he has $6 left. If he wants to buy

the mystery series, he needs another $8. How many comics or mystery books is Ken buying? How much money does he have?
Whoever posts this on jiskha gets 50 points
Mathematics
1 answer:
Elza [17]3 years ago
3 0

Answer:

7 books

$27

Step-by-step explanation:

3x + 6= 5x - 8

3x - 5x = -14

-2x= -14

x= 7 books

he has (3×7)+6= $27

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Pythagorean theorem: a^2 + b^2 = c^2
36^2 + b^2 = 85^2
1296 + b^2 = 7225
b^2 = 7225 - 1296
b^2 = 5926
b = square root of 5929
b = 77 inches long
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Step-by-step explanation:

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5 0
3 years ago
Helium decays to form lithium. 6 2 he → 6 3 li 0 -1 e this type of nuclear decay is called .
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To understand this question, we need some knowledge on radioactive decay. This type of nuclear decay is called a beta decay

<h3>Beta Decay</h3>

This is the process where a radioactive material is fired or naturally emits a beta particle which is equivalent to the lose of an electron and spontaneously becomes an entirely different element.

^6_2He \to ^6_3 Li + ^0_-_1e

The participating actors in this nuclear reaction are

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brainly.com/question/9615302

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8 0
2 years ago
Hattie had $6600 to invest and wants to earn 4% interest per year. She will put some of the money into an
34kurt

Answer:

The amount of money that should be invested at the rate of 12% is $900 and the amount of money that should be invested at the rate of 10% is $2,100

Step-by-step explanation:

Let

x ------> the amount of money that should be invested at the rate of 12%

3,000-x -----> the amount money that should be invested at the rate of 10%

we know that

The sum of the interest on each of the accounts must be equal to the total interest.

Solve for x

therefore

The amount of money that should be invested at the rate of 12% is $900 and the amount of money that should be invested at the rate of 10% is $2,100

Hope this helps you!!!! :D

6 0
2 years ago
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