The equation of a circle is always the same:
where (h, k) is the center of a circle and r is its radius. So, we have:
The answer is
the last one.
Answer:
the span of the bridge is 73.7 feet
Step-by-step explanation:
The equation of an ellipse with a vertical major axis(i.e major axis parallel to y axis) is given by:
a>b
where (h,k) are the coordinates of the center of the ellipse, a is the length of the major axis and b is the length of the minor axis
For this problem, the center of the ellipse (h,k) = (0,0)
Therefore:
The top of the arch is 20 feet above the ground level (the major axis), therefore a=20
length of the major axis = 2a= 2*20 = 40
The coordinates of the ellipse (x,y) = (28,13)
b² ≅ 1358
b≅36.85
Length of minor axis (2b) = 73.7 feet.
the span of the bridge is 73.7 feet
Answer:
1,436 with a remainder of 4
Step-by-step explanation:
The first step is to see how many times 6 goes into 8
It goes in 1 time so you write 1 at the top and subtract 6 from 8
This gives you 2, and then you bring down the 6 from the 8,620
Now you have 26, and you see how many times 6 goes into 26
It goes in 4 times giving you 24 so you write 4 at the top
Then you subtract 24 from 26 giving you 2 and you drop down the 2
This gives you 22 and 6 goes into 22 3 times giving you 18
So you write 3 at the top and subtract 18 from 22 giving you 4
then you drop down the 0 from the 8,620 giving you 40
Then you evaluate how many times 6 goes into 40, it goes in 6 times
this gives you 36 and then you writes a 6 at the top and subtract 40 and 36
this gives you a remainder of 4
C ( To make things simple, let's turn 80% into a fraction, 8/10. To get a common denominator let's turn 8/10 into 4/5. Since they are both of equal size, the first group would have 2/5 left-handed people and the second 1/5 left-handed people. Let's imagine that each group has 5 people in it. There would be 10 people in total. There is 1 person for each fifth so we can add now. 4 + 3 = 7 right handed people. To check, 2 + 1 = 3 and 3 + 7 = 10. so 7/10 of the class is right-handed. )