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xenn [34]
3 years ago
12

The owner of a bike shop sells unicycles and bicycles and keeps inventory by counting seats and wheels. One day, she counts 21 s

eats and 30 wheels. The equation representing the total number of seats is u + b = 21 where u is the number of bicycles and b is the number of bicycles.
A. 2u + b = 21
B. u + 2b = 30
C. 2u + b = 30
D. u + 2b = 21
Mathematics
2 answers:
Sholpan [36]3 years ago
8 0

Answer:

The correct option is:

B. u + 2b = 30

Step-by-step explanation:

The owner of a bike shop sells unicycles and bicycles and keeps inventory by counting seats and wheels. One day, she counts 21 seats and 30 wheels.

u is the number of unicycles and b is the number of bicycles.

There are total 21 seats

⇒  u+b=21

unicycle has 1 wheel and bicycle has 2 and total there are 30 wheels

⇒ u+2b=30

Hence, the correct option is:

B. u + 2b = 30

bearhunter [10]3 years ago
5 0
The wheels function is:

w=2b+u and w=30 so

u+2b=30


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Question 2(Multiple Choice Worth 1 points)
Tomtit [17]

The sequence is " Algebraic, common difference = −10 " ⇒ 1st answer

Step-by-step explanation:

Let us revise the algebraic and geometric sequences

  • The Algebraic sequence is the sequence that has a common difference between each two consecutive terms, like 2 , 5 , 8 , 11 , 14 , .......... the difference between the 5 and 2 is equal to the difference between 8 and 5, and the difference between 11 and 8 and the difference between 14 and 11
  • The geometric sequences is the sequence that has a common ratio between each two consecutive terms, like 3 , -9 , 27 , -81 , ...... the ratio between -9 and 3 as the ratio between 27 and -9 as the ratio between -81 and 27

→  x   :    1    :    2    :    3    :    4

→ f(x) :    5   :   -5    :    -15  :    -25

x represents the positions of the terms

f(x) represents the value of each term

∵ 1st = 5 and 2nd = -5

∵ -5 - 5 = -10

∵ 2nd = -5 and 3rd = -15

∵ -15 - (-5) = -15 + 5 = -10

∵ 3rd = -15 and 4th = -25

∵ -25 - (-15) = -25 + 15 = -10

∴ There is a common difference -10 between each two

   consecutive terms

∴ The sequence is algebraic with common difference -10

The sequence is " Algebraic, common difference = −10 "

Learn more:

You can learn more about the sequences in brainly.com/question/1522572

#LearnwithBrainly

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