2 * plane speed in still air = 289mph + 257mph = 546
plane speed in still air = 273 mph
plane speed in still air + wind speed = 289
273 + wind speed = 289
Therefore, wind speed = 16 mph
Answer:
zero
Step-by-step explanation:
The line is a horizontal line
Horizontal lines are of the form y= constant
This means they have zero slope
So the formula for this type of question is a(square) + b(square)=c(square)
so it would be x+30x30 = 50x50
x+900= 2500
x= 2500-900
x= 1600
since it’s you want to find the length without the root , do square root of 1600 , which is 40
So it’s B
Answer:
<u>y = x/2</u>
Step-by-step explanation:
y = -x has a negative slope so cross this one out.
y = 2x has a steeper slope that would be above the black line so cross this one out
y = 0.001x has a slope that acends very slowly so cross this one out.
y = x/2 is the best match.
If you have
y = 3/5 x + 4 you need to multiply by 5 - no fractions
5y = 3x + 20
5y - 3x = 20
-3x +5y =20, 3x -5y =-20
(ax + by = c)