Answer:
20.5 cm
21.5 cm
Step-by-step explanation:
Length is 21 cm correct to 2 significant figures
<u>Find lower and upper bounds</u>
- The lower bound is the smallest value that will round up to the approximate value.
- The upper bound is the smallest value that will round up to the next approximate value.
<u>As per above definition:</u>
- Lower bound is 20.5 cm rounded to 21
- Upper bound is 21.5 cm rounded to 22
Frankie has 6 coins, because the ratio of coins Carmen has to Frankie's is 3:2
2x+3y=45
x+y=10
Take the bottom equation and solve for y
x+y=10
Subtract x from both sides
y=-x+10
Substitute into the top equation
2x+3(-x+10)=45
2x-3x+30=45
Subtract 30 from both sides + add like terms
-x=15
Divide both sides by -1
x=-15
Answer:
A .012 cents
Step-by-step explanation:
80 tissues x 24 cases = 1920 tissues in a case
22.56 / 1920 = .01175 (approx .012)