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LiRa [457]
3 years ago
7

The coin box of a vending machine contains $6.20 in dimes and quarters. There are 32 coins in all. How many of each kind are the

re?
Mathematics
1 answer:
Lady_Fox [76]3 years ago
7 0
Let d and q be the number of dimes and quarters respectively.

10 cents* d+ 25 cents* q = 620 cents ($6.20 = 620 cents)
⇒ 10d + 25q = 620 (1)

On the other hand, we have: d+ q= 32 (coins) (2)

From (1) and (2), we solve the set of equations.

The final answer is d= 12 coins and q= 20 coins.


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Drag each tile to the correct box.
wlad13 [49]

The correct match of each tile of the equation with its solution is:

  • n - 13 = - 12 →→→ 1
  • n/5 = -1/5  →→→ -1
  • n + 15 = - 10 →→→ -25

<h3>How do we match each tile to the correct box?</h3>

To match each tile to the correct box, we have to solve the arithmetic operations in the box, then drag the correct tile that matches our answer into the box.

From the image attached below;

1.

n - 13 = - 12

Let us add (+13) to both sides to eliminate (-13), i.e.

n - 13 + 13 = - 12 + 13

n = 1

2.

n/5 = -1/5  

multiply both side by 5

n/5 × (5) = -1/5 × (5)

n = -1

3.

n + 15 = - 10

n +15 - 15 = - 10 - 15

n = -25

Learn more about matching each tile to the correct box here:

brainly.com/question/17203448

#SPJ1

7 0
2 years ago
A number, n, is added to 15 less than 3 times itself. The result is 101. Which equation can be used to find the value
taurus [48]

Answer:

see explanation

Step-by-step explanation:

15 less than 3 times n is 3n - 15, thus

n + 3n - 15 = 101 ← equation modelling the situation

4n - 15 = 101 ( add 15 to both sides )

4n = 116 ( divide both sides by 4 )

n = 29

5 0
3 years ago
Plzzz help asap with 4 questions will mark as brainliest
m_a_m_a [10]

Answer:

Number 3 is B

Step-by-step explanation:


8 0
3 years ago
The value of the first 5 in California population 10 times as great as the value of the second 5
Otrada [13]
I'm sorry is this a comment? I need more information, Thank you.
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What is equilateral and classify using side lengths
LUCKY_DIMON [66]
It is when all the sides are right angles.
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