Answer:
-7/4
Step-by-step explanation:Slope (m) =
ΔY
ΔX
=
-7
4
= -1.75
θ =
arctan( ΔY ) + 360°
ΔX
= 299.74488129694°
ΔX = 2 – -2 = 4
ΔY = -4 – 3 = -7
Distance (d) = √ΔX2 + ΔY2 = √65 = 8.0622577482985
Equation of the line:
y = -1.75x – 0.5
or
y =
- 7 x
4
– 1
2
When x=0, y = -0.5
When y=0, x = -0.28571428571429
Answer:
−
6
√
2
Step-by-step explanation:
Answer:
Ratios are proportional if they represent the same relationship. One way to see if two ratios are proportional is to write them as fractions and then reduce them. If the reduced fractions are the same, your ratios are proportional.
Step-by-step explanation:
Answer:
The speed of the airplane in still air is 550 mph.
The speed of the wind is 50 mph.
Step-by-step explanation:
speed = distance / time
distance = speed * time
or simply
d = st
Let v be the speed of the airplane with no wind.
Let w = speed of wind
With the wind:
d = 1800; s = v + w; t = 3
1800 = 3(v + w)
Against the wind:
d = 1800; s = v - w; t = 3.6
1800 = 3.6(v - w)
We have a system of two equations:
3(v + w) = 1800
3.6(v - w) = 1800
Divide both sides of the first equation by 3. Divide both sides of the second equation by 3.6.
v + w = 600
v - w = 500
Add the equations.
2v = 1100
v = 550
The speed of the airplane in still air is 550 mph.
v + w = 600
550 + w = 600
w = 50
The speed of the wind is 50 mph.
Answer:
4- -1=3
Step-by-step explanation:
7. m=3 (4,-1)
do the () inside first so
4- -1 = 3
hope this helps for number 7