Step-by-step explanation:
Area of triangle = 1/2 × the width × the length
42 = 1/2(x+3)(2x+8)
42 = 1/2×2×(x+3)(x+4)
42 = (x+3)(x+4)
(x+3)(x+4) = 42
x² + 7x + 12 = 42
x² + 7x + 12 - 42 = 0
x² + 7x - 30 = 0
(x-3)(x+10) = 0
x = 3, -10
x can't be -10 because the width and the length should be only + values
x = 3
Answer: $10.56
Step-by-step explanation:
Original price of the shirt = $16
From the question, Sale price = 34% of the original price
If original price = $16, Sales price will be 34% of original price - original price
= 0.34 × 16 - 16;
Apply BODMAS; multiply before subtracting
=16 - 0.34 × 16
=$16 - $5.44
Sales price= $10.56
Answer:
Step-by-step explanation:
x² + y² = 81
x + y = √81
x + y = 9
x ≥ 9
y ≤ 9
Answer: A
Step-by-step explanation: Edge 2020