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Olin [163]
4 years ago
7

F(x)=2x^2+4x+5 Find : f(a)=

Mathematics
1 answer:
VladimirAG [237]4 years ago
7 0

Answer:

f(a) = 2a^2 + 4a + 5

Step-by-step explanation:

You just need to replace the "x" with the "a".

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Michelle is buying carpet for a room with the dimensions shown. Michelle calculates that the area she will cover with carpet is
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The area of the room is 147\frac{1}{2} square feet so Michelle's reasoning was incorrect.

Step-by-step explanation:

Step 1:

To calculate the area of the given room, we divide the unknown shape into known shapes.

The room's shape is made of 2 rectangles.

The area of a rectangle is the product of its length and its width.

One rectangle has a length of 10 feet and a width of 12\frac{1}{2} feet.

The other rectangle has a length of 15-10=5 feet and a width of 4\frac{1}{2} feet.

Step 2:

The area of the first rectangle = (10)(12\frac{1}{2} )= (10)(12.5)= 125 square feet.

The area of the second rectangle = (10)(4\frac{1}{2} )= (5)(4.5)= 22.5 square feet.

The total area of the room = 125+22.5 = 147.5 = 147 \frac{1}{2} square feet.

The area of the room is 147\frac{1}{2} square feet so Michelle's reasoning was incorrect.

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