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vladimir2022 [97]
3 years ago
10

Each item in a vending machine costs

Mathematics
1 answer:
gizmo_the_mogwai [7]3 years ago
6 0

Answer:

1 quarter, 2 dimes

1 quarter, 1 dime, 3 nickels

4 dimes, 1 nickel

3 dimes, 3 nickels

9 nickels

Step-by-step explanation:

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Consider the equation: 3(–4n – 9) = 21
hram777 [196]

Answer: N=-4

Step-by-step explanation:

STEP

1

:

STEP

2

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Pulling out like terms

2.1     Pull out like factors :

  -4n - 9  =   -1 • (4n + 9)

Equation at the end of step

2

:

 -3 • (4n + 9) -  21  = 0

STEP

3

:

STEP

4

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Pulling out like terms

4.1     Pull out like factors :

  -12n - 48  =   -12 • (n + 4)

Equation at the end of step

4

:

 -12 • (n + 4)  = 0

STEP

5

:

Equations which are never true:

5.1      Solve :    -12   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation:

5.2      Solve  :    n+4 = 0

Subtract  4  from both sides of the equation :

                     n = -4

One solution was found :

n = -4

7 0
2 years ago
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A petting zoo owner is building an enclosure for his farm animals. He needs 353 feet of fencing. The supply store sells fencing
jolli1 [7]
353/12 =29.41. But will have to round up to 30 so the answer is 30
4 0
3 years ago
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There are 20 20 coins in a jar. Each coin is either a nickel or a quarter. If one of the coins is selected at random, the probab
sveta [45]

Answer: there are 8 quarters in the jar

Step-by-step explanation:

Let x represent the number of nickels that is inside the jar.

The total number of coins inside the jar is 20.

Probability is expressed as

Number of possible or favorable outcomes/total number of outcomes.

The probability of selecting a nickel is 0.6. This is expressed as

0.6 = x/20

Cross multiplying, it becomes

x = 20 × 0.6

x = 12

Since there are 12 nickels inside the jar, then the number of quarters would be

20 - 12 = 8

3 0
3 years ago
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Pressure and Volume are inversely related as:

P= \frac{R}{V}

We can also write it as:

PV=R

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2(4.155)=R \\  \\ &#10;R=8.31

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4 0
3 years ago
Adele has 6 sheets of stickers .Bea has 9 sheets of the same stickers.how many stickers do they have altogether?
Jlenok [28]
They have 15 sheets of stickers all together
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