Answer:
What's the picture?
If you provide the picture of the graph I can help
Title:
<h2>Check the explanation.</h2>
Step-by-step explanation:
The standard form of an ellipse is 
.
The span of the river is 20 meters. As per the given condition, y-axis will pass through the middle point of the river. That is why, the value of a will be 
.
Since the height of the arc is 6, the value of b is 6.
The equation of the arc will become 
.
Answer:
5 = side a
3 = side c
angle B = 62 degrees
JK is side b
Use the Law of Cosines to find the length of side b.
b^2 = a^2 + c^2 − 2ac cos(B)
b^2 = (5^2 + 3^2) − ( 2 x 5 x 3) cos(62°)
b^2 = (25 + 9) − 30 x 0.469
b^2 = 34 - 30 x 0.469
b^2 = 34 - 14.084
b^2 = 19.916
b = √19.916
b = 4.463
Rounded to the nearest tenth is 4.5 mm.
Hope this helps!
Step-by-step explanation:
The formula for infinite geometric series is equal to a1 / (1-r) where in this problem a1 is equal to 8 and r is equal to 4. In this case, r is not equal to less than 1. This means the sum should be infinity and cannot be determined definitely.
6c+24=4c-18
-4c on both sides
2c+24=-18
-24 on both sides
2c=-42
divide by 2
=-21
