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Romashka [77]
3 years ago
12

Write an inequality that expresses the reason the lengths 5 feet, 10 feet, and 20 feet could not be used to make a triangle. Exp

lain how the inequality demonstrates that fact.
Mathematics
1 answer:
Nadusha1986 [10]3 years ago
7 0
Pythagoreon theorem
a^2+b^2=c^2
5^2+10^2=125 not 20^2
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Find the squares of (y+3) ​
emmasim [6.3K]

Answer:

Since we know that

(a+b)

2

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(a−b)

2

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−2ab+b

2

Now,

(i)

(x+3y)

2

=x

2

+2×x×3y+(3y)

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2

+6xy+9y

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(ii)

(2x−5y)

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2

−2×2x×5y+(5y)

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−20xy+25y

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(iii)

(a+

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1

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2

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+(

2a

1

)

2

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2

+1+

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1

(iv)

(2a−1a)=(1a)

2

(1a)

2

=1a

2

Answer

8 0
2 years ago
LOOK AT PICTURE,THEN ANWSER QUESTION, WHOEVER ANSWERS CORRECT I WILL MARK BRAINIEST!!
Gnom [1K]
Answer:
B. 4/11

Solution:
Gradient=(y1-y2)/(x1-x2)
Gradient=(6-2)/(4-(-7)) =4/11
3 0
3 years ago
If Quadrilateral Q is a scaled copy of Quadrilateral P created with a scale factor of 3
Stolb23 [73]
I don't see a drawing of the quadrilaterals, so I don't know what the perimeter of quadrilateral P is. But whatever the perimeter of P is, Q will be 1/3 of that. Perimeter is a length, so even though it may pertain to a 2-dimensional object, it is still a 1-dimensional, linear measure. When two objects are similar (same shape, but scaled up or down by a scale factor), all corresponding linear measures have the same scale factor.

If you were asked about area or volume, that would be a different matter. In the case of area, you would square the scale factor, and in the case of volume, you would cube the scale factor.
7 0
3 years ago
If a piece of cardboard is 6 in long and I line up a hundred and ten of them what would be the length of my row and feet
Alex
6in x 110 = 660in = 55ft
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3 years ago
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SpyIntel [72]

Answer:

(0,-9)

Step-by-step explanation:

The image of a point (x,y) over a line y=x is given by the co-ordinate rule:

(x,y) → (y,x)

So, when we reflect a point over the line y=x, the x co-ordinate and y co-ordinate change their places.

Here, (x,y) is (-9,0). So, from the above rule, after reflection over the line y=x, the image has the following co-ordinates:

(0,-9)

4 0
3 years ago
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