Answer:
................................................
Step-by-step explanation:
Answer:
6 ft
Step-by-step explanation:
Since the shape of the cables on the bridge are to open up, the standard equation of the parabola produced is given as:
(x - h)² = 4p(y - k)
Where (h, k) is the vertex and focus is at (h, k+p)
From the question, the point (0, 2) is the vertex and point (50, 27) lie on the parabola. Hence:
(x - 0)² = 4p(y - 2)
x² = 4p(y - 2).
Sinc the tower is 100 ft apart and 27 ft height, hence the point 100/2 = 50 ft and 27 ft lie on the parabola
To find p, use (50, 27)
50² = 4p(27 - 2)
2500 = 4p(25)
100p = 2500
p = 25
hence:
x² = 4(25)(y - 2)
x² = 100(y - 2)
At a point of 20 feet (i.e x = 20), y is the height of the cable, hence:
20²=100(y-2)
400 = 100y - 200
100y = 600
y = 6
The height is 6 ft at a point of 20 ft
Answer:
The total value is £268.20.
Step-by-step explanation:
Given : There are 495 coins in a bottle.
1/3 of the coins are £1 coins.
124 of the coins are 50p coins.
The rest of the coins are 20p.
To find : Work out the total value of the 495 coins?
Solution :
According to question,
Total coins = 495
of the coins are £1 coins.
i.e. The number £1 coins are

So, We have £165
124 of the coins are 50p coins.
50p=£0.50
Number of coins were

So, We have £62 .
Remaining coins were,

i.e. remaining coins are 206 are of 20p.
20p=£0.20
Number of coins were

So, We have £41.20 .
Now, Adding all of them together,
i.e. £165+£62+£41.20=£268.20
So, The total value is £268.20.
Answer:
975 feet
Step-by-step explanation:
1 inch = 150 feet
6.5 inches = 10 x 6.5 = 975 feet
Hope this helps!