Question

Kira is making ribbon bracelets She makes 4 bracelets on Thursday and 3 bracelets on Friday. She uses yard of ribbon for each bracelet. Part A Which of the following equations can Kira use to find how much ribbon she used? Select all that apply

A. (4x5/6) + ( 3x5/6) = r
B. (4+5/6) + (3+5/6) = r
C. (7x5/6) = r
D. 5/6 x (4+3) = r
E. (4x5/6) x (3x5/6) = r

Answer 1

Kira used (4x5/6) + (3x5/6) or (7x5/6) or 5/6 x (4+3) to find the total amount of ribbon used for the bracelets. Equations B and E are not correct for this calculation.

Step-by-step explanation:

To determine how much ribbon Kira used for her bracelets, we need to find the total amount of ribbon used over Thursday and Friday. She made 4 bracelets on Thursday and 3 on Friday, and each bracelet requires 5/6 of a yard of ribbon.

Considering the variables and operations involved, we can look at the given equation options:

• (4×5/6) + (3×5/6) = r: This shows separately the amount of ribbon for Thursday's bracelets and Friday's bracelets before summing them, which is a correct method.
• (7×5/6) = r: Adding the total number of bracelets first, then multiplying by the ribbon per bracelet also gives the total amount of ribbon used, so this method is correct as well.
• 5/6 × (4+3) = r: This is another correct form of the previous equation, using distributive property to get the same result.

Equations B and E are incorrect because they involve arithmetic operations that do not correspond to calculating the total amount of ribbon used.