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Delicious77 [7]
3 years ago
7

Sadie has $1 worth of nickels and dimes. She has twice as many nickels as dimes. Write a system of equations that could be used

to determine the number of nickels and the number of dimes that Sadie has. Define the variables that you use to write the system.
Mathematics
1 answer:
zepelin [54]3 years ago
6 0
N + 2d =1
This is the system of equations because it is 2 times more than nickels
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Tcecarenko [31]

Answer:

<em>(3). 500; (4) 60</em>

Step-by-step explanation:

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2 years ago
The largest county in the state of Texas is 6064 square miles larger than the smallest county in the same state. The size of the
Ann [662]

The smallest county is 129 square miles large.

Step-by-step explanation:

Let,

Smallest county = x

Largest county = y

According to given statement;

The largest county in the state of Texas is 6064 square miles larger than the smallest county in the same state.

y = x+6064     Eqn 1

The size of the largest county is 48 times the size of the smallest county plus one square mile.

y = 48x+1         Eqn 2

As Eqn 1 and Eqn 2 are both equal to y, therefore,

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x+6064=48x+1\\6064-1=48x-x\\6063=47x\\47x=6063

Dividing both sides by 47

\frac{47x}{47}=\frac{6063}{47}\\x=129\ square \ miles

The smallest county is 129 square miles large.

Keywords: linear equation, substitution method

Learn more about substitution method at:

  • brainly.com/question/9328925
  • brainly.com/question/9184197

#LearnwithBrainly

7 0
3 years ago
Is y= 4/5x -8 and y -= -5/4x = +3 parallel perpendicular or neither
Gnesinka [82]

Answer:

perpendicular

Step-by-step explanation:

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koban [17]

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Step-by-step explanation:

system:

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6 0
3 years ago
Read 2 more answers
I really need help with this?
Natasha2012 [34]

Answer:

88

Step-by-step explanation:

if im wrong please tell me although i did do the problem

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