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Zolol [24]
3 years ago
6

The current in a simple electrical circuit is inversely proportional to the resistance. The current is 80 amps when the resistan

ce is 50 ohms. What is the current when the resistance is 40 ohms?
Mathematics
1 answer:
Oksana_A [137]3 years ago
6 0
I =  / r            where I = current and r = resistance

80 = k / 50 so
k = 400

so we have I = 400/r

when r = 40  
I = 400/40 = 10 amps
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Natalka [10]
2x + y = 3
x = 2y - 1

solve for y in the first equation;
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y = 3 - 2x 

x = 2y - 1
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solve for x;
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the answer is: x = 1, y = 1

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3 years ago
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NNADVOKAT [17]
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4 0
3 years ago
Read 2 more answers
1. Complete this statment: A polygon with all sides the same length is said to be____
Katen [24]

Answer:

Q1. Regular (A)

Q2. 105° (C)

Q3. x=45°

Step-by-step explanation:

Q1. A regular polygon is a polygon with all sides and angles equal.

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Q3. 148°+112°+(2x+10)°+(2x)°+90°= Sum of angles in a pentagon.

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Sum of interior angles of a polygon is: (n-2)180°. Where "n" is the number of sides of the polygon.

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solving the equation you have;

360°+4x=540°

4x=540°-360°

4x=180°

x=180°/4

x=45°

therefore x=45°

8 0
3 years ago
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Angelina_Jolie [31]
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