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Gennadij [26K]
3 years ago
6

Solve this equation please 15-5(4c-7)=50

Mathematics
1 answer:
WITCHER [35]3 years ago
7 0

Answer:

not sure but i think c=12

15-5=10

10x4c-7=50

10× 4c-7/4=50

10×(c-7)=50

10c-7=50

10c/10=50/10

c-7/7 =5

c=5+7=12

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3 years ago
When Vince does 14 push-ups and 12 sit-ups, it takes a total of 52 seconds. In comparison, he needs 48 seconds to do 12 push-ups
marshall27 [118]

Answer:

it takes 2 seconds to do one situp

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hope this helps :)

Step-by-step explanation:

14x + 12y = 52

12x + 12y = 48

^^^ this is an inequality that we can make.  

x stands for pushups

y stands for situps

if we subtract the second equation from the first, we get

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now we can place x in one of the equations to solve for y

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