Answer:
2172 is the total cost
Cost for tiles: 1800
cost of paint: 372
Find the surface area of the wall without floor:(for cost of paint)
40 x 15 + 40x3x2 + 15x3x2 = 600 + 240 + 90 = 930
Cost: 930/25 x 10 = 372
Find area of floor:(to find cost of tiles)
40 x 15 = 600m^2
cost: 600 x 3 = 1800pounds
add them if needed
Hope this helps
Good Luck
Answer:
C. 2, -1, -5, -8.
Step-by-step explanation:
a = first term = 2
second term, a2n-1) - 3 = 2 - 3 = -1
third term = -2 - 3 = -5
fourth term = -5 - 3 = -8.
Answer:
<h2>SA = 5645cm²</h2>
Step-by-step explanation:
We have three pairs of congruent rectangles
9cm × 4m; 9cm × 5cm and 4m × 5cm
We know 1m = 100cm, therefore 4m = 400cm
The formula of an area of a rectangle l × w:
A = l · w
Substitute:
A₁ = 9cm · 4m = 9cm · 400cm = 3600cm²
A₂ = 9cm · 5cm = 45cm²
A₃ = 4m · 5cm = 400cm · 5cm = 2000cm²
Calculate the surface area:
SA = A₁ + A₂ + A₃
SA = 3600cm² + 45cm² + 2000cm² = 5645cm²
Answer:
74 pages/hour
Step-by-step explanation:
The average rate of change is the difference in the numbers of pages divided by the difference in the numbers of hours.
At the end of 3 hours, 90 pages were read.
At he end of 5 hours, 238 pages were read.
Difference in hours: 5 hours - 3 hours = 2 hours.
Difference in pages: 238 pages - 90 pages = 148 pages
The average rate of change is the difference in pages divided by the difference in hours.
average rate of change = (148 pages)/(2 hours) = 74 pages/hour