<span>f x=0 ==>x^4+400=0+400=400</span>
Answer:
60/96
Step-by-step explanation:
Answer:
£14.85
Step-by-step explanation:
The total number of tiles needed
= 5 × 3
= 15
∴ The total cost of the tiles
= £0.99 × 15
= £14.85
Step 1: convert the equation into fhe vertex form
To do you can complete squares:
y = - [x^2 + 4x + 3]
y = - [ (x + 2)^2 - 4 + 3]
y = - [ (x + 2)^2 - 1] = - (x+2)^2 + 1
Then the vertex is (-2, 1)
Now you can drasw the vertex
Step 2: Find the roots (zeros)
y = - [ (x + 2)^2 - 1] = 0
(x + 2)^2 - 1 = 0
(x+2)^2 = 1
(x+2) = (+/-) √1
x + 2 = (+/-1)
x = - 2 +/- 1
x = -1 and x = -3
Now you draw the points (-1,0) , (-3,0)
Step 3: find the interception with the y-axis.
That is y value when x = 0
y = - (0)^2 - 4(0) - 3 = -3
Then draw the point (0, -3)
Step 4: given that the coefficent of x is negative (-1) the parabola is open downward.
So, with those four points: vertex (-2,1), (-1,0), (-3,0) and (0,-3), you can sketch the function.
Step-by-step explanation:
- Since,in question 21 the trspezium is an isoseles tapizium
- therefore,9x-17=4x+28
- 5x=45
- x=9
- therefore q=9x-17
- =9*9-17
- =81-17
- q=64
- therefore 2t=360-128(since its isoseles triangle therefore adjacent base angles are equal)
- 2t=23
- t=116
- 2(K+M)=360
- 2(3x+16 + 11x-18)=360
- 2(14x-2)=360
- 28x-4=360
- 28x=364
- x=13
- J=K
- Isoleses angles are equal
- 3x+16=J
- 39+16=J
- J=55
- Bd=Ec (Congeruent sides of congurent trisnle are equal,BED~=CDE)
- 8x-27=2x+33
- 6x=60
- x=10
- Therefore,Bd=8x-27
- Bd=80-27
- Bd=53
