Answer:
- Option A
- Speed of plane is 240 km/h, speed of wind is 50 km/h
Step-by-step explanation:
With the tail wind the total speed is the sum of the speeds of plane and wind.
When into wind the total speed is the difference of speeds of plane and wind.
The first equation is
The second equation is
Simplify both equations and solve the system
- r + w = 1740/6 ⇒ r + w = 290
- r - w = 570/3 ⇒ r - w = 190
Solve by elimination, add up the equations
- r + w + r - w = 290 + 190
- 2r = 480
- r = 240
Find the value of w
- 240 + w = 290
- w = 290 - 240
- w = 50
Answer:
If Hunter is right beneath Graham ( 18ft-5ft=13ft) and G's arms are 18ft above ground ( and going up, no bending) the question would be at what hight would Graham catch the ball and and how soon.
The maximum hight that the ball can reach before falling ( when the vector F - force of throwing the ball to Graham, would be equal in module to gravitational force - considering gravitational velocity of 13ft/s^2
Answer:
Step-by-step explanation:
Put x = -2, x = -1, ... , x = 2 to the equation of the function y = -4x + 5 and calculate the values of y:
for x = -2
y = -4(-2) + 5 = 8 + 5 = 13
for x = -1
y = -4(-1) + 5 = 4 + 5 = 9
for x = 0
y = -4(0) + 5 = 0 + 5 = 5
for x = 1
y = -4(1) + 5 = -4 + 5 = 1
for x = 2
y = -4(2) + 5 = -8 + 5 = -3
Answer: All of the above?
Step-by-step explanation:
The concentration of solution would be the amount of the molecule divided by the volume. In this case, the solution concentration is 36% and the volume is 4 quarts + 1 quarts= 5 quarts. You are asked the concentration before 1 quarts added. The alcohol content should be same for both solutions. The answer should be:
concentration = alcohol content/ volume
alcohol content =concentration * volume
alcohol content1 =alcohol content2
36% * 5 quarts = concentration2 * 4quarts
concentration2= 36% * 5 quarts / 4 quarts= 45%
