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brooke1897
19.11.2020 •
Mathematics
Find the unit rate. Round to the nearest hundredth, if necessary. 14 lb for $2.99
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Ответ:
$0.21
Step-by-step explanation:
you would divide $2.99 by 14 :)
hope this helps!
Ответ:
Hot dog = $3.50
Drink = $2.0
Step-by-step explanation:
Let the cost of a hot dog be x
Let the cost of a drink be y.
From the question above, we can form an equation as:
3x + 4y = 18.50 i
4x + 2y = 18 ii
Multiply equation i by 4
Multiply equation ii by 3
12x + 16y = 74 iv
12x + 6y = 54 v
Subtract v from iv
10y = 20
y = 20/10
y = 2
A drink cost $2
From equation ii
4x + 2y = 18
Recall that y = 2
4x + 2(2) = 18
4x + 4 = 18
4x = 18 - 4
4x = 14
x = 14/4
x = 3.5
A hot dog ost $3.50