16 divided by 2=8 and 4 times 2= 8
2 x (multiplication sign, not an x) (x+7) or 2(x+7)
Answer:
y ≈ 16.33
Step-by-step explanation:
∆SPQ is a 30-60-90 right triangle
PS:QS:PQ = 1:2:√3
QS/PQ = 2/√3
QS/PQ = QS/10
QS/10 = 2/√3 Multiply each side by 10
QS = 20/√3
∆RSQ is a 45-45-90 right triangle.
∴ RS = QS = 20/√3
RS² + QS² = QR²
(20/√3)² + (20/√3)² = y²
400/3 + 400/3 = y²
800/3 = y² Take the square root of each side
y = √(800/3)
= 20√(2/3)
= (20√6)/3
≈ 16.33
convert 7 1/2 to a decimal which becomes 7.5 and here are the 3 different expressions to find the garden's perimeter.
1) p= 2(l + w)
2) p= 2 x 90+ 2 x 7.5
3) p= 90 + 7.5 + 90 + 7.5
