There are 21 wheels at the bike shop. The wheels will be used to build tricycles and bicycles. Some day, the owner would like to build unicycles , too. There will behalf as many tricycles as bicycles. How many of each type of bike will be built?

There are 3 tricycles and 9 bicycles.

Step-by-step explanation:

Since we have given that

Number of wheels at the bike shop = 21

Number of wheels bicycle has = 2

Number of wheels tricycle has = 3

Let the number of tricycle be 'x'.

Let the number of bicycle be '2x'.

According to question, we get that

So, Number of bicycle would be

Hence, there are 3 tricycles and 9 bicycles.

most likely linear (proportionate)

step-by-step explanation:

as time increases heart rate increases

a

step-by-step explanation:

given the 2 equations

- x + y = - 2 → (1)

2x - 3y = 4 → (2)

multiplying (1) by 2 and adding to (2) will eliminate the x- term

- 2x + 2y = - 4 → (3)

add (2) and (3) term by term

(2x - 2x) + (- 3y + 2y) = (4 - 4), simplifying gives

- y = 0 ⇒ y = 0

substitute y = 0 in either of the 2 equations for corresponding value of x

substituting in (2) gives

2x = 4 ( divide both sides by 2 )

x = 2

solution is (2, 0 ) → a