X+y=15
2x+3y=37
15-x=y
2x+3(15-x)=37
2x+(45-3x)=37
2x-3x+45=37
-1x=-8
x=8
x is the amount of bikes, so there are 8 bikes. 8x2=16.
37-16=21
21/3=7
There are 7 tricycles.
Answer:

Step-by-step explanation:
Here, you can see every consecutive term is divided by 2. I think that's pretty obvious looking at it, but you can work it out like this if you'd like to. Divide each consecutive term by the one before it:

Each term is multiplied by 1/2 over the last, or divided by 2. In this case actually, we do want it in the form of "multiplied by 1/2", as the recursive equation is:

where x is the factor. Here, we're multiplying by x, so we want "multiplied by 1/2" as described above. x is 1/2, so you can write the equation:

You can simply interpret this as "each term is 1/2 of the term before it"
Answer:
6
Step-by-step explanation:
The ratio of
is a constant
=
=
= 
That is y =
x
When x = 21, then
y =
× 21 = 6
Answer:
lol yes?
Step-by-step explanation:
I believe it’s 275 because you would multiply 5 by 55