An office supply store sells 12 rolls of tape for $29.88. At that rate, which proportion could be used to solve for c, the cost
1 answer:
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Answer:
Part A: 25% of 50 = 12.5
Part B: 25% of 60 = 15
Part C: 50% of 60 = 30
Part D: 75% of 60 = 45
Part E: 75% of 30 = 22.5
Part F: 100% of 22.5 = 22.5
Part G: 10% of 22.5 = 2.25
Part H: 50% of 45.7 = 22.85
Step-by-step explanation:
To find - Do you know the answer to
Part A: 25% of 50 =
Part B: 25% of 60 =
Part C: 50% of 60 =
Part D: 75% of 60 =
Part E: 75% of 30 =
Part F: 100% of 22.5 =
Part G: 10% of 22.5 =
Part H: 50% of 45.7 =
Proof -
Part A :
25% of 50 = =
= 12.5
⇒25% of 50 = 12.5
Part B :
25% of 60 = =
= 15
⇒25% of 60 = 15
Part C :
50% of 60 = =
= 30
⇒50% of 60 = 30
Part D :
75% of 60 = =
= 45
⇒75% of 60 = 45
Part E :
75% of 30 = =
= 22.5
⇒75% of 30 = 22.5
Part F :
100% of 22.5 = = 22.5
⇒ 100% of 22.5 = 22.5
Part G :
10% of 22.5 = = 2.25
⇒ 10% of 22.5 = 2.25
Part H :
50% of 45.7 = =
= 22.85
⇒50% of 45.7 = 22.85
Answer:
Sam is incorrect
Step-by-step explanation:
We can calculate the lengths of the diagonals using Pythagoras' identity.
The diagonals divide the rectangle and square into 2 right triangles.
Consider Δ SRQ from the rectangle
SQ² = SR² + RQ² = 12² + 6² = 144 + 36 = 180 ( take square root of both sides )
SQ = ≈ 13.4 in ( to 1 dec. place )
Consider Δ ONM from the square
OM² = ON² + NM² = 6² + 6² = 36 + 36 = 72 ( take square root of both sides )
OM = ≈ 8.5 in ( to 1 dec. place )
Now 2 × OM = 2 × 8.5 = 17 ≠ 13.4
Then diagonal OM is not twice the length of diagonal SQ