Answer:
See below
Step-by-step explanation:
-a times -1
Negative times a negative equals a positive
a times 1 = a
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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Alright Fabian, here's the deal.
First you need to solve the inequality for k. To do this, you have to
a) distribute the -(3k + 4)
b) collect like terms: -k - 3k
c) move the term with k to the left (optional but it's a habit)
d) divide both sides by the coefficient. Check out picture for details.
Get a job then pay
Happy to Help
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