Answer:
the answer is option 1
Step-by-step explanation:
Answer:
3.69 (rounded)
Step-by-step explanation:
Substitute x for "a number".
New equation: x(x + 2) = 21
Distribute and combine to form a single equation: x^2 + 2x - 21 = 0
Use quadratic formula, factoring, or graphing to get all possible answers.
Quadratic formula: 
, where A = x^2 coefficient, B = x coefficient, and C = constant.
-5.69, 3.69
Eliminate an incorrect answer that does not line up with the above equation.
3.69
Rigid mapping is used to illustrate rigid transformation.
The rigid mapping rules are:
- <em>(a) (x, y)->(y,x)
</em>
- <em>(c) (x, y)->(-y, x)
</em>
- <em>(d) (x, y)-> (-y +4, X-6)
</em>
- <em>(e) (x, y)->(x + 4, y-5)
</em>
- <em>(f) (x, y)->(x, x+y)
</em>
<em />
All transformations are rigid except dilation.
This is so, because dilation <em>changes the size </em>of the function that is being transformed, while others do not.
Dilations are represented by scale factors (<em>product or division</em>)
From the list of given options
<em>(b) (x, y)->(3x, y) and (c) (x,y)-> (3)</em> are non-rigid mapping because they represent dilations.
Hence, the rigid mapping rules are:
- <em>(a) (x, y)->(y,x)
</em>
- <em>(c) (x, y)->(-y, x)
</em>
- <em>(d) (x, y)-> (-y +4, X-6)
</em>
- <em>(e) (x, y)->(x + 4, y-5)
</em>
- <em>(f) (x, y)->(x, x+y)
</em>
<em />
Read more about transformation at:
brainly.com/question/13801312
Do 11 times 3.14 the divide what you get by 2
1200 milligrams. There are 24 hours in a day. 24/8 is 3. You multiply 400 by 3 and you get 1200
