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Fantom [35]
2 years ago
14

Take a look at the picture and answer correctly so i can mark you as brainliest.

Mathematics
2 answers:
klio [65]2 years ago
3 0

Answer:

{2, 3}

Step-by-step explanation:

Hi I have 2 more questions and I can help you again!

Scrat [10]2 years ago
3 0
{2,3} please mark as brainliest
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Alex has 84 quarters and nickels worth a total of $17.80.
Hunter-Best [27]

The equation which can be used to find the number of quarters and nickels is; n + q = 84, 0.05n + 0.25q = 17.80.

<h3>Quarters and nickels</h3>

  • Total coins = 84
  • Total value = $17.80

let

  • Number of quarters = q
  • Number of nickels = n

n + q = 84

0.05n + 0.25q = 17.80

From equation (1)

n = 84 - q

Substitute into (2)

0.05n + 0.25q = 17.80

0.05(84 - q) + 0.25q = 17.80

4.2 - 0.05q + 0.25q = 17.80

- 0.05q + 0.25q = 17.80 - 4.2

0.20q = 13.60

q = 13.60 / 0.20

q = 68

Substitute q = 68 into

n + q = 84

n + 68 = 84

n = 84 - 68

n = 16

Therefore, the number of quarters and nickels are 68 and 16 respectively.

Learn more about quarters and nickels:

brainly.com/question/17127685

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6 0
2 years ago
Compare these fractions to 1/2. less than 1/2 equal to 1/2 greater than 1/2.
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Joe goes to a mexican restaurant and order nachos. He can have just cheese or add any of the following: chicken, onion, sour cre
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There are 15 different variations of nachos possible.


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3 years ago
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6 0
3 years ago
50. If angles are complementary, what’s value of x?
maks197457 [2]

Answer:

x = 14

Step-by-step explanation:

For complementary angles, the sum of two angles is equal to 90 degrees.

We have,

m\angle ABC = 4x-10\\\\m\angle DBC = x+30

ATQ,

4x-10+x+30=90

Taking like terms together,

4x+x =90-30+10

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