Answer:
Step-by-step explanation:
Subtract:- 15- 0.05= 14.95
Multiply:-
The least and highest value of the house before being rounded are £184999 and £175000 respectively.
The initial value of Sue's house before the increase is £205,000
£180,000 correct to 2 significant figures :
The greatest value of the house would be a sum in which the third significant figure is a value less than 5 and the succeeding values are highest
The least value of house would be a sum in which the third significant value is 5 and the succeeding values are lowest.
2.)
Let the price before the increase = p
- Price after increase = £219350
7% of p = 219350
(1+7%) × p = 219350
1.07p = 219350
p = 219350 / 1.07
p = £205,000
Therefore, the price of the house before the increase is p = £205,000
Learn more : brainly.com/question/25338987
Answers:
- Vertex form: y = -2(x-1)^2 + 8
- Standard form: y = -2x^2 + 4x + 6
Pick whichever form you prefer.
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Explanation:
The vertex is the highest point in this case, which is located at (1,8).
In general, the vertex is (h,k). So we have h = 1 and k = 8.
One root of this parabola is (-1,0). So we'll plug x = -1 and y = 0 in as well. As an alternative, you can go for (x,y) = (3,0) instead.
Plug those four values mentioned into the equation below. Solve for 'a'.
y = a(x-h)^2 + k
0 = a(-1-1)^2+8
0 = a(-2)^2+8
0 = 4a+8
4a+8 = 0
4a = -8
a = -8/4
a = -2
The vertex form of this parabola is y = -2(x-1)^2+8
Expanding that out gets us the following
y = -2(x-1)^2+8
y = -2(x^2-2x+1)+8
y = -2x^2+4x-2+8
y = -2x^2+4x+6 .... equation in standard form
3)
(x/3)+(2/5)
(5x/15)+(6/15)
(5x+6)/15
4)
(2/x)+(3/7)
(14/7x)+(3x/7x)
(3x+14)/(7x)
5)
(x/2)+(1/3)+(x/4)
(6x/12)+(4/12)+(3x/12)
(9x+4)/12
