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2 years ago

15

hana paid 1,200 for the carpet in her living room. the room has an area of 251.2 square feet. what was her unit cost of carpetin

g in dollars per square foot. round to neaest cent

1 answer:

rosijanka [135]2 years ago

8 0

Itd be $4.78
1200/251.2=4.77707006, rounded to the nearest cent would be $4.78 :)

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mrs_skeptik [129]

Answer:

2:15 PM

Step-by-step explanation:

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Find the first three terms of the sequence below. Tn=n2+2n+9

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$\\ \bull\tt\longrightarrow T_1=1^2+2(1)+9=1+2+9=12$

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2 years ago

Math help please (80 points)

Inga [223]

Answer:

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Step-by-step explanation:

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I like to line them up vertically

x^4 -x^2 +9

- x^3 -3x^2 -12

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x^4 -x^3 -4x^2 -3

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2 years ago

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kvasek [131]

Answer:

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2 years ago

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Dahasolnce [82]

Volume of a sphere and a cone

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$V=\frac{4}{3}\pi r^3$

We have that the radius of a sphere is half the diameter of it:

Then, the radius of this sphere is

r = 6cm/2 = 3cm

<h2>Finding the volume of a sphere</h2>

We replace r by 3 in the equation:

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Since 3³ = 3 · 3 · 3 = 27

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If we use π = 3.14:

$\begin{gathered} V=\frac{4}{3}\pi\cdot27 \\ \downarrow \\ V=\frac{4}{3}\cdot3.14\cdot27 \\ \downarrow \\ V=4.18\bar{6}\cdot27 \end{gathered}$

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4.18666... ≅ 4.19

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Then, we have that:

<h2>Finding the volume of a cone</h2>

We have that the volume of a cone is given by:

$V=\frac{1}{3}\pi r^2h$

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$\begin{gathered} V=\frac{1}{3}\pi r^2h \\ \downarrow \\ V=\frac{1}{3}\cdot3.14\cdot3^2\cdot6 \end{gathered}$

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Answer: the volume of the cone that has the same circular base and height is 56.52 cm³

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4 months ago