Simplify2 1 - + -3 11
2 answers:
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There are 15 mini hotdogs and 5 mini pizza rolls in the combination meal.
Step-by-step explanation:
Given,
Calories in each hotdog = 80 calories
Calories in each mini pizza = 50 calories
Combined meal = 20
Combined calories = 1450 calories
Let,
x represent the number of hot dogs.
y represent the number of mini pizzas.
According to given statement;
x+y=20 Eqn 1
80x+50y=1450 Eqn 2
Multiplying Eqn 1 by 80
Subtracting Eqn 2 from Eqn 3
Dividing both sides by 30
Putting y=5 in Eqn 1
There are 15 mini hotdogs and 5 mini pizza rolls in the combination meal.
Keywords: linear equation, elimination method
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Answer:
Step-by-step explanation:
<u>Given the system of equation</u>
<u>Expand the parenthesis of the 1) equation</u>
<u>Current System</u>
<u>Substitute the y value of the 1) equation with the 2) equation</u>
<u>Add ( x² + 4x + 3) on both sides</u>
<u>Combine like terms</u>
<u>Factorize the quadratic equation</u>
<u>Substitute the x values into one of the equations to find the y value</u>
<u>Therefore, the two solutions are:</u>
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