3. A chef bought $17.01 worth of ribs and chicken. Ribs cost 1.89 per pound and chicken costs 0.90 per pound. The equation 0.9c + 1.89r = 17.01 represents the relationship between the quantities in this situation. Show that each of the following equations is equivalent to. 0.9c + 1.89r = 17.01 Then, explain when it might be helpful to write the equation in these forms. A. c = 18.9 - 2.1r
B. r = - 10/21 c + 9

Step-by-step explanation:

Given equation:

Make c the subject:

Divide all terms by 0.9:

Now make r the subject:

Divide all terms by 1.89:

Confirmed that both equations are equivalent with the initial one.

These are helpful when finding one of the variables if the value of another variable is given.

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

a

step-by-step explanation: