hipeopleitsme121
18.10.2019 •
Mathematics
Aconcession stand sold a total of 138 small and large popcorns. a small popcorn costs $2.50, and a large popcorn costs $4.00. total popcorn sales were $466.50. how many large popcorns were sold?
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Ответ:
y= large popcorns
x+y=138
2.50x + 4.00y= 466.50
y = 138-x
2.50x +4.00(138-x) = 466.50
2.50x +552-4x = 466.50
2.50x-4x = 466.50 - 552
-1.5x = -85.5
-1.5x/-1.5 = -85.5/-1.5
x = 57
Since ,
x+y=138
(57)+y = 138
y = 138 - 57
y = 81
Therefore 81 large popcorns were sold!
Ответ:
see below
Step-by-step explanation:
IE = sqrt ( (0-(-6)^2 + (4 - -0.5)^2)
= sqrt 56.25
= 7.5
PI = sqrt ( (-2 - -6)^2 + (-4 - -6)^2)
= sqrt ( 20)
= 4.47
EP = sqrt((-2)^2 + (-4-4)^2))
= sqrt (68)
= 8.25
IE = 7.5 PI = 4.47 and EP = 8.25