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:
y+2=5/3(x+6)
3(y+2)=5(x+6) [multiply both sides by 3 to get rid of fraction]
3y+6=5x+30 [distribute]
3y=5x+24 [subtract 6 from both sides]
3y-5x=24 [subtract 5x from both sides]
-3y+5x=-24 [multiply everything by -1]
5x-3y=-24 [rearrange]
Step-by-step explanation:
Answer:
68-46 x (10-4)-120
Step-by-step explanation: