Answer:
- plane: 530 mi/h
- wind: 40 mi/h
Step-by-step explanation:
Let p and w represent the speeds of the plane and the wind. The relation between time, speed, and distance is ...
speed = distance/time
p +w = (2565 mi)/(4.5 h) = 570 mi/h
p -w = (2205 mi)/(4.5 h) = 490 mi/h
Adding these speeds, we get ...
(p +w) +(p -w) = (570) +(490) mi/h
2p = 1060 mi/h
p = 530 mi/h
Then the speed of the wind is ...
w = 570 mi/h -p = (570 -530) mi/h = 40 mi/h
The plane's speed is 530 mi/h; the wind speed is 40 mi/h.
Answer:
-36,047.
Step-by-step explanation:
Sum of n terms = a1 .( r^n - 1) / (r - 1)
So Sum of 7 terms = -11 . ((-4)^7 - 1 / (-4-1)
= -11 * -16,385 / -5
= -36,047.
The domain of the graph is the one in option A.
D: 0 ≤ x ≤ 12
<h3>
What is the domain of the graph?</h3>
For a function f(x) = y, we define the domain as the set of the possible inputs that we can use in the function.
Here we have a graph, in the case of graphs, the inputs are represented on the horizontal axis.
If you look at the horizontal axis, you can see that the graph goes from x = 0 to x = 12.
Then the domain is [0, 12], or written as an inequality:
D : 0 ≤ x ≤ 12
If you want to learn more about domains:
brainly.com/question/1770447
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Answer:
1.275
Step-by-step explanation:
