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vivado [14]
3 years ago
6

Mongoose McHuffy has a bike shop. He only has bicycles and tricycles in stock. In total he has 21 items in stock with a total of

51 wheels. Can you tell Mongoose McHuffy how many bicycles and tricycles he has?
Mathematics
1 answer:
olasank [31]3 years ago
5 0

Answer:

12 bikes

9 tricycles

Step-by-step explanation:

x+y=21

2x+3y=51

x=-y+21

2(-y+21)+3y=51

-2y+42+3y=51

y+42=51

y=9

x=12

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Step-by-step explanation:

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Suppose P(C/D)=0.34, P(D)=0.11 , and P(D/C)=0.09. What is P(C) rounded to two decimal places?
Olegator [25]

So C/D=.34 And D=.11, now just plug D into the first equation.

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3 0
2 years ago
Read 2 more answers
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Umnica [9.8K]

Answer:

x=7

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Step-by-step explanation:

x + y + z = 25

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Step-by-step explanation:

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