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3 years ago

Find the volume of a pyramid with a square base, where the perimeter of the base is

Mathematics

1 answer:

Liula [17]3 years ago

3 0

Answer:

33.4 m^3

Step-by-step explanation:

The edge length of the base is 1/4 of the perimeter, so is ...

(10.3 m)/4 = 2.575 m

Then the area of the base is the square of this, or ...

B = (2.575 m)^2 = 6.630625 m^2

The volume is ...

V = (1/3)Bh = (1/3)(6.630625 m^2)(15.1 m) ≈ 33.4 m^3

The volume of the pyramid is about 33.4 cubic meters.

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Scorpion4ik [409]

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2 years ago

Solve for xx. Round to the nearest tenth, if necessary.

jasenka [17]

Step-by-step explanation:

S+T+U=180°{sum of angle of triangle}

68°+90°+U=180°
U=180-158°
U=22°

sin theta= p/h

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2 years ago

If f(x) = 4(3x - 5), find f^-1(x)

Sloan [31]

Answer:

The answer is A.

Step-by-step explanation:

Lets call f(x)=y, so y= 4*(3*x-5), we want to find 'x', using 'y' as a the variable.

$y=12x-20\\ y+20=12x\\ x=\frac{y+20}{12}$

Now lets change the name of 'y' to 'x', and 'x' to f^-1(x).

f-1(x) = (x+20)/12

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2 years ago

Find the inverse of f(x)=-3x+3

kolezko [41]

To get the inverse, first off do a quick switch on the variables, and then solve for "y".

$\bf f(x)=y=-3x+3\qquad \qquad inverse\implies \boxed{x}=-3\boxed{y}+3
\\\\\\
x-3=-3y\implies \cfrac{x-3}{-3}=y\implies \cfrac{3-x}{3}=y\impliedby f^{-1}(x)$

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2 years ago

Which number is between<br> 4 1/5<br> and 4.032

guapka [62]

Answer:

4.115

Step-by-step explanation:

The final answer will be 4.115

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2 years ago