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brilliants [131]
3 years ago
10

7. {MCC.7.G.3} Name the cross sectional area below. *

Mathematics
1 answer:
Rzqust [24]3 years ago
5 0
It’s an isosceles Triangle.

Looking at the picture it seems that both slant height are the same.
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Help plz! (a + b - c)(a + b + c) multiplying polynomials
saul85 [17]

Answer:

a^2 + 2ab + b^2 - c^2

Step-by-step explanation:

When you multiply all the terms together you get a^2 + ab + ac + ab + b^2 + bc - ac - bc - c^2. Then you can just combine like terms and simplify it to a^2 + 2ab + b^2 - c^2. Hope this helps :)

5 0
3 years ago
The function f(x) = (x - 4)(x - 2) is shown.
mash [69]

Answer:

My answer

Step-by-step explanation:

The range of the function is :

all real numbers less than or equal to - 1

7 0
3 years ago
Use an angle sum identity to derive each double-angle identity.
Simora [160]
\ [cos(2\theta)]'=(2cos^2\theta-1)'=2(cos^2\theta)'-(1)'\\\\=2\cdot2cos\theta\cdot(-sin\theta)-0=-2\cdot2sin\theta cos\theta=\boxed{-2sin2\theta}\\\\Used:\\\ [f(x)-g(x)]'=f'(x)-g'(x)\\\{f[g(x)]\}'=f'[g(x)]\cdot g'(x)\\(cosx)'=-sinx\\sin2x=2sinxcosx
4 0
3 years ago
PLEASE HELP ASAP!!!!!!
Katena32 [7]
1. - Since a cube is all the same lengths on all sides you would want to find the area of one of the sides. You would do this by multiplying 3.8 by 3.8.
3.8*3.8=14.44
Since you have six faces on a cube you want to multiply this by 6.
14.44*6=86.64
So your answer for 1. is 86.64 in^2 of glass

3. Same thing as number one. Find the face of one side:
1 1/3*1 1/3 is about 1.7777
Multiply this by the six faces. 
1.7777*6 is about 10.66666
So your answer for 3. is about 10.666 (repeating) in^2

4. For this one, you want to follow the surface area formula for a cylinder. Which is - A=2πrh+2πr^2
When you put all your numbers in it would look like this: 
2*3.14*2*22+2*3.14*2^2
Once you do that equation you will get 301.44
So that should be your answer 301.44 cm^2

Hope this helps!
8 0
3 years ago
If Two-thirds = x over 12 , what is the value of x?
SVEN [57.7K]

Answer:x=8

Step-by-step explanation:

3×4 = 12 so 2×4 = 8

6 0
3 years ago
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