Solve: 10 sin^2(X) - 3sin(X) - 1 = 0
1 answer:
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The missing figure is attached
Answer:
The sheet steel costed $22.41 per square meter
Step-by-step explanation:
<em>To find the cost per square units find the lateral area (they will made the walls only) of the rectangular prism and divide the cost of the steel sheet by it</em>
The formula of the lateral area of the rectangular prism is:
LA = perimeter of base × height
∵ The length of the base is 9 m
∵ The width of the base is 5 m
∵ The height of the prism is 7 m
- Find the perimeter of the base
∵ Perimeter of base = 2(length + width)
- Substitute the values of the length and the width
∴ Perimeter of base = 2(9 + 5) = 28 m
Now use the formula of the lateral area to get it
∵ LA = 28 × 7
∴ LA = 196 m²
Let us find the cost per square meter
∵ The total cost of the sheet steel was $4392
∵ The lateral area of the container is 196 m²
- Divide the cost by the lateral area
∴ The unit cost = 4392 ÷ 196
∴ The unit cost = 22.41 dollars to the nearest cent
The sheet steel costed $22.41 per square meter
Answer:
Base price: $13.
Surcharge: $2 per additional pound.
Step-by-step explanation:
The base price can be considered a constant, while the surcharge is a function of the additional weight of the package, over 1 pound.
Then, we can model this as a linear function, with additional weight as the independent variable.
being b: base price, and s: surcharge for each additional pound.
The 7-pound package cost $25. The additional weigth in this case is 7-1=6 pounds.
The 22-pound package cost $55. The additional weigth is 21 pounds.
So we have the first point (6, 25):
Then, for the second point (21, 55) we have:
Then, the prices are:
Base price: $13.
Surcharge: $2 per additional pound.