Answer:
y^2+8y+16
Step-by-step explanation:
6y^2 +2y +5 - ( 5y^2 -6y-11)
Distribute the minus sign
6y^2 +2y +5 - 5y^2 +6y+11
Combine like terms
y^2+8y+16
Answer:
There was 62.23% change in radius as the ion formed.
Step-by-step explanation:
Given
Radius of Aluminium
atom = 143 pm
Radius of Aluminium
atom = 54 pm
Change is the radius = Radius of Aluminium
atom - Radius of Aluminium
atom = 143 -54 = 89
Now to find % Change is the radius we will divide Change is the radius by Radius of Aluminium
atom and multiply by 100 we get
% Change is the radius = ![\frac{\textrm{Change is the radius}}{\textrm{Radius of Aluminium (Al) atom}} \times 100 = \frac{89}{143}\times100= 62.23\%](https://tex.z-dn.net/?f=%5Cfrac%7B%5Ctextrm%7BChange%20is%20the%20radius%7D%7D%7B%5Ctextrm%7BRadius%20of%20Aluminium%20%28Al%29%20atom%7D%7D%20%5Ctimes%20100%20%3D%20%5Cfrac%7B89%7D%7B143%7D%5Ctimes100%3D%2062.23%5C%25)
Hence there was 62.23% change in radius as the ion formed.
Hourly wage before raise= $12.25 - $0.75 = $11.50. Marietta's hourly wage before the raise was $11.50
Answer:
<u>f(x) = x² - 4x + 2 or f(x) = (x - 2)²</u>
Step-b<u>y</u>-step explanation:
- The parabola touches the x-axis at only one point
- If we use y = a(x − h)² + k, we can see from the graph that h = 2 and k = 0
- This gives us y = a(x − 2)²
What is the value of "a"?
- We also see that the y-intercept is (0, 4)
- We can plug it into the equation
- 4 = a(0 - 2)²
- 4a = 4
- a = 1
<u>So, our quadratic equation will be</u> :
- y = 1(x - 2)²
- <u>y = x² - 4x + 2 or y = (x - 2)²</u>
3 fifths as a decimal would be .6, converting it to a percentage would make it 60%
77% as a decimal would be .77 and in a fraction as 77 over a hundred