Answer:
The answer is C on Edge 2021
Step-by-step explanation:
In step 2 he confused the multiplication and addition signs
Hey there!
Here's you your answer: D; 12.56
How i got it: *image attached*
Hope this helps!
Answer:
Item 23 The table shows the results of randomly selecting colored marbles from ... Are you an educator? ... The marble was returned to the bag after each selection . ... results, what is the expected probability of randomly selecting a green marble ... A . 0.125 B . 0.20 C . 0.80 D . 1.0 Item 24 The six sides of a number cube are ...
Step-by-step explanation:
Answer:
1. 4
2. No solution in real numbers, in complex it is 11i and -11i
3. 4
4. 17
5. 8
Step-by-step explanation:
1. f = sqrt(16) = 4
2. No real solution
3. h^2 = 16, h = 4
4. k-4 = 13, k = 17
5. 2m-1=15, m = 8
Answer:
The speed of jet in still air is 750 miles per hour and speed of wind is 130 miles per hour.
Step-by-step explanation:
Given that:
Distance traveled by jet against the wind = 2480 miles in 4 hours
Combined speed =
= ![\frac{2480}{4}](https://tex.z-dn.net/?f=%5Cfrac%7B2480%7D%7B4%7D)
Combined speed = 620 miles per hour
Distance traveled with wind = 7040 miles in 8 hours
Combined speed = ![\frac{7040}{8}](https://tex.z-dn.net/?f=%5Cfrac%7B7040%7D%7B8%7D)
Combined speed = 880
Let,
Speed of jet = x
Speed of wind = y
When jet travels against the wind, the speed will be subtracted
x-y=620 Eqn 1
When jet travels with the wind, the speed will be added
x+y=880 Eqn 2
Adding Eqn 1 and 2
(x-y)+(x+y)=620+880
x-y+x+y=1500
2x=1500
Dividing both sides by 2
![\frac{2x}{2}=\frac{1500}{2}\\x=750](https://tex.z-dn.net/?f=%5Cfrac%7B2x%7D%7B2%7D%3D%5Cfrac%7B1500%7D%7B2%7D%5C%5Cx%3D750)
Putting x=750 in Eqn 2
750+y=880
y=880-750
y=130
Hence,
The speed of jet in still air is 750 miles per hour and speed of wind is 130 miles per hour.