X = +12 in equation 9. Does that help?
B.
X-17=-5
Add 17 to both sides
-5+17=12
Answer:
x is 6
look at the ratio of 2.1 to 21
2.1 is multiplied by 10 to get 21 and therefore since these fractions are equal, x would have to be 6 in order for the equation to work
Step-by-step explanation:
Given:
6 out of 15 customers order a chicken sandwich
270 customers
This is a problem of ratio and proportion:
a/b = c/d where ad = bc
6/15 = x/270
6 * 270 = 15x
1,620 = 15x
1620 / 15 = x
108 = x
The restaurant should predict to serve 108 chicken sandwich to the 270 people.
