So,
Let Consuelo's spendings be c and Brenda's spendings be b.
We have our first equation: c = 2b - 3
And our second equation: c = 81
Substitute 81 for c
81 = 2b - 3
Add 3 to both sides
84 = 2b
Divide both sides by 2
42 = b
Brenda spent $42.
When simplified down it would look like 12:13. This is becuase both numbers are multiples of 3.
Answer:
441
Step-by-step explanation:
If this is a rectangle, meaning the width and the legnth is different, there is no way in solving this.
However, if it is a square, meaning all the sides are the same,
we can know that every side is 21 inches long.
An area is the width times the length, which is both 21 in this case.
21 times 21 = 441.
441 inches squared.