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asambeis [7]
3 years ago
6

Expand and simplify (3m-2n)²​

Mathematics
2 answers:
oee [108]3 years ago
7 0

Answer:

9m^2 - 12mn + 4n^2

Step-by-step explanation:

Olegator [25]3 years ago
7 0

Answer:

9m²-12mn+ 4n²

Step-by-step explanation:

First you expand it so

(3m-2n)(3m-2n)

9m²-6mn-6mn+4n²

9m²-12mn+ 4n²

And this is the simpliest form , hope this helped:))

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Isabella uses the equation to find the volume of the cone below.
Rufina [12.5K]

Answer:

The correct answer option is: Isabella should have divided the product of 12\pi and 9 by 3 to get V=\frac{12\pi (9)}{3}

Step-by-step explanation:

We are given a diagram of a cone with height 9 cm and area of the base (circle) 12 \pi   cm^ 2.

Isabella uses the equation V = \frac { 1 } { 3 } ( 12 ) ^ 2 ( 9 ) \pi and we are to find the error that she is making in finding the volume of this cone.

The volume of a cone is given by: \pi r^2\frac{h}{3} out of which \pi r^2 represents the area of the base (circle).

Therefore, Isabella should have divided the product of 12\pi and 9 by 3 to get V=\frac{12\pi (9)}{3}.

8 0
3 years ago
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Let f(x)=2x-1 and g(x)=1/x. Find the value of f(g(7))
netineya [11]

Answer:

-5/7

Step-by-step explanation:

We need to find g(7) first

All we have to is plug 7 in the place of x

g(7) = 1/7

Now we have f(1/7) = 2x - 1

f(1/7) = 2(1/7) - 1

f(1/7) = 2/7 - 1

Don't forget about common denominators

2/7 - 7/7 = -5/7

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Find the area of the triangle
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The base here is 8 and the height is 3.
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SashulF [63]

Answer:

8xy

Step-by-step explanation:

\sqrt{(8xy)^{2}}=\sqrt{(8)^{2}x^{2}y^{2}} =8xy

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