If the length of the floor is 14 feet, convert it into inches to match the units of the tile. 14 feet is 168. So the floor is 168 inches long. Because we know it's a square and all sides are the same length, find the area of the floor by doing 168x168. This equals 28224 square inches. Then, divide by the area of one tile. 28224/192=147. So you need 147 Tiles.
Step-by-step explanation:
Above expressions represent rational numbers.
Answer: hii
<em> 1 is the only correct expression.</em>
Step-by-step explanation:
Anything raised to 0 is 1.
Hopefully this helps <em>you</em>
- Matthew <3
Answer:
d =
Step-by-step explanation:
Use the distance formula: d =
A (0, 0)
B ( 1, 3)
d =
d =
d =
d =
Answer:
The dimensions that minimize the cost of materials for the cylinders have radii of about 3.628 cm and heights of about 7.256 cm.
Step-by-step explanation:
A cylindrical can holds 300 cubic centimeters, and we want to find the dimensions that minimize the cost for materials: that is, the dimensions that minimize the surface area.
Recall that the volume for a cylinder is given by:
Substitute:
Solve for <em>h: </em>
Recall that the surface area of a cylinder is given by:
We want to minimize this equation. To do so, we can find its critical points, since extrema (minima and maxima) occur at critical points.
First, substitute for <em>h</em>.
Find its derivative:
Solve for its zero(s):
Hence, the radius that minimizes the surface area will be about 3.628 centimeters.
Then the height will be:
In conclusion, the dimensions that minimize the cost of materials for the cylinders have radii of about 3.628 cm and heights of about 7.256 cm.