Seth is trying to find the unit price for a package of blank compact discs on sale at 10 for $5.49. Find his mistake and correct
2 answers:
Answer:
The unit price of disc is $0.55
Step-by-step explanation:
Seth is trying to find the unit price for a package of blank compact discs on sale at 10 for $5.49.
∵ The price of 10 blank compact discs = $5.49
∴ The price of 1 blank compact disc =
= $0.549 ≈ $0.55
The unit price for a blank compact disc would be $0.55
If Seth got the same answer, he is correct.
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Answer:
Step-by-step explanation:
Area of triangle = 0.5 × Base × Height
→ Substitute in the values
200 = 0.5 × 5x × 5x
→ Simplify
200 = 12.5x²
→ Divide both sides by 12.5
16 = x²
→ Square root both sides
4 = x ∴ x = 4