2(1.9) - - 8.5
2(1.9)=3.8
3.8 - - 8.5
2 minus’s equal a plus
3.8+8.5
ANSWER = 12.3
5.15 × 10^6 converted to regular form is 5,150,000, which is clearly more than 42,980. In fact, it's about 5,107,020 more.
Answer:
A) A = X^2 + 11X + 24
B) X = 18 ft
C) 414 ft^2
D) 132 ft^2
Step-by-step explanation:
A) Width W of yard and path = X + 3
Lenght L of path = X + 5 + 3 = X + 8 ft, therefore,
Area of yard and path = L x W = (X +3) x (X +8)
A = X^2 + 11X + 24
B) if area of the yard and path is 546 ft^2,
546 = X^2 + 11X + 24
X^2 +115X - 522 = 0 (quadratic equation)
Solving the quadratic equation gives
X = 18 and X = -29
Our answer can only be positive so we choose X = 18 ft
C) lenght of yard = 5 + 18 = 23 ft
Width = 18 ft
Therefore area = L x W = 23 x 18 = 414 ft^2
D) area of path = area of path and yard minus area of yard
= 546 - 414 = 132 ft^2
Answer:7
Step-by-step explanation:
3(2)+1
6+1=7
Given:
Length of the playground: 125 ft
Width of the playground: 60 ft
Depth of the mulch: 6 inches
Convert ft and inches to yards
1 yard = 3 feet
Length: 125ft/3ft = 41.67 yd
Width: 60ft/3ft = 20 yd
1 ft = 12 inches
Depth: 6 inches * 1ft/12inches = 6ft/12 = 1/2 ft
Depth: 0.5 ft * 1yd/3ft = 0.5yd/3 = 0.17 yd
Volume = Length * Width * Depth
V = 41.67yd * 20yd * 0.17yd
V = 141.68 yd³
V = 125ft * 60ft * 0.5ft
V = 3,750 ft³
1 cubic yard = 27 cubic feet
3,750ft³ * 1yd³/27ft³ = 3,750 yd³ / 27 = 138.89 or 139 yd³ LETTER B.
