3 is the first one.
-1 is the 2nd
and 7 is the 3rd
Question:
The quantities x and y are proportional.

Find the constant of proportionality (r)
Answer:

Step-by-step explanation:
Given

Required
Determine the constant of proportionality (r)
Constant of proportionality (r) is calculated as

When

Substitute these values in the given formula

Convert both fractions to improper fractions

Multiply both sides by 


Reorder


Divide the numerator and denominator by 3


Convert to mixed fraction

<em>Hence, the constant of proportionality is </em>
<em></em>
Answer:
c is what i think
Step-by-step explanation:
3/4 y= 24
Multiply both sides of the equation by 4/3 (the reciprocal of 3/4) to be left with y.
4/3 × 3/4y = 24 × 4/3
y = 24 × 4/3
y = 32
Hope this helps!
Answer:
12.22
Step-by-step explanation:
There are 360° in a full circle
The circumference of a circle is c = 2πr
----------------------------------
The lenght of the arc will be the portion of the circumferece included in the angle
l = (∅/360) * 2πr
plug in the knowns
l = (70/360) * 2π(10)
l ≈ 12.22