To turn a decimal into a percent, multiply it by 100:

5.4 is equal to 540%.
2+ 16= 18/2= 9. x= 9
10+(-4)= 6/2 = 3. y= 3.
the mid point is D. (9,3)
<span>The correct answer is n</span>²<span>+3.
Explanation<span>:
We find the first differences between terms:
7-4=3; 12-7=5; 19-12=7; 28-19=9.
Since these are different, this is not linear.
We now find the second differences:
5-3=2; 7-5=2; 9-7=2.
Since these are the same, this sequence is quadratic.
We use (1/2a)n</span></span>²<span><span>, where a is the second difference:
(1/2*2)n</span></span>²<span><span>=1n</span></span>²<span><span>.
We now use the term number of each term for n:
4 is the 1st term; 1*1</span></span>²<span><span>=1.
7 is the 2nd term; 1*2</span></span>²<span><span>=4.
12 is the 3rd term; 1*3</span></span>²<span><span>=9.
19 is the 4th term; 1*4</span></span>²<span><span>=16.
28 is the 5th term: 1*5</span></span>²<span><span>=25.
Now we find the difference between the actual terms of the sequence and the numbers we just found:
4-1=3; 7-4=3; 12-9=3; 19-16=3; 28-25=3.
Since this is constant, the sequence is in the form (1/2a)n</span></span>²<span><span>+d;
in our case, 1n</span></span>²<span><span>+d, and since d=3, 1n</span></span>²<span><span>+3.</span></span>
-12b+6c+18 would be the answer. you would simply combine like terms
Answer:
The formula for a quadrilateral depends on the shape.
Area of a Parallelogram: Base × Height
Area of a Rectangle: Length × Breadth
Area of a Square: (side)^2
Area of a Kite: (1 ⁄ 2) × Product of Diagonals
Area of a Trapezoid: (base1+base2/2) x Height
I hope this helps :)