O.9c + 1.89r = 17.01 c=18.9 - 2.1r equation answer
1 answer:
Answer:
Step-by-step explanation:
The entire question is
A chef spent $17.01 on ribs and chicken. The cost per pound for ribs is 1.89, while chicken is 0.90. The equation 0.90 +1.89r = 17.01 signifies the relationship between the quantities in this scenario.
Demonstrate that the following equations are equivalent to 0.9c + 1.89r = 17.01.
Furthermore, explain when these forms of the equation would be useful.
a. c=18.9-2.1r. b. r= -10÷2c+9
We know that
The standard form for the linear equation is
where
c is the pounds of chicken
r is the pounds of ribs
step 1
Rearrange the equation to isolate c
This implies ----> make c the subject
Subtract 1.89r from both sides
Divide both sides by 0.90
Simplify
step 2
Rearrange the equation to solve for r
This implies ----> make r the subject
Subtract 0.90c from both sides
Divide both sides by 1.89
Simplify
Thus
The equation is equivalent.
This equation is practical since it allows me to find the number of pounds of chicken by substituting the amount of ribs into the equation to get my answer.
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