Answer:
4
Step-by-step explanation:
Let the value of BD be x.
Therefore, CD=6 - BD=6-x
As, speed is same, so the distance will be equal
Thus, 5+x=7+(6-x)
x=4
BD=4
Answer:
(3, -1), 7
Step-by-step explanation:
To find the center of this circle: compare the given equation
(x - 3)^2 + (y + 1)^2 = 7^2 to the standard equation of a circle with center at (h, k):
(x - h)^2 + (y -k)^2 = r^2
From this comparison we see that the center is at
h = 3 and k = -1, and also that r must be 7: (3, -1), 7
We want to find the speed of the hyper loop if it takes 11 minutes from Dubai to Abu Dhabi. We will find that the speed is 761.75 km/h
<h3>
Working with speeds.</h3>
Remember the relation:
speed = distance/time.
Here we know that the time is 11 minutes (the time in which the distance is traveled) and the distance will be the distance from Dubai to Abu Dhabi, which we can find online.
The distance is 139.4 km
Now, we know that:
1 hour = 60 minutes.
Using this we can write the time in hours.
11 min = (11 min/60min) hours = 0.183 hours
Now we can just compute the speed:
S = (139.4 km)/(0.183 h) = 761.75 km/h
If you want to learn more about speeds, you can read:
brainly.com/question/4931057
Answer:
Step-by-step explanation:
Answer:
n= 26, so the answer would be 'B'.
Step-by-step explanation:
n-8=18
n=18+8
n=26