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RUDIKE [14]
3 years ago
5

PLEASE HELP!!!!!!!! WILL GIVE 10 POINTS!!!!!!!

Mathematics
1 answer:
weqwewe [10]3 years ago
6 0

The test contains 10 three-point questions and 14 five-point questions.

Step-by-step explanation:

Given equations are;

x + y = 24    Eqn 1

3x + 5y = 100   Eqn 2

Multiplying Eqn 1 by 3;

3(x+y=24)\\3x+3y=72\ \ \ Eqn 3\\

Subtracting Eqn 3 from Eqn 2;

(3x+5y)-(3x+3y)=100-72\\3x+5y-3x-3y=28\\2y=28

Dividing both sides by 2;

\frac{2y}{2}=\frac{28}{2}\\y=14\\

Putting in Eqn 1,

x+14=24\\x=24-14\\x=10

The test contains 10 three-point questions and 14 five-point questions.

Keywords: linear equations, subtraction

Learn more about linear equations at:

  • brainly.com/question/4703807
  • brainly.com/question/4703820

#LearnwithBrainly

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