S=d/t ⇒d=s*t
s=speed
d=distance
t=time
The first train :
d=x
x=70 miles/h*t ⇒ x=70t (1)
The second train
d=360 miles - x
360 miles - x=80 miles/h*t ⇒360-x=80t ⇒ x=360-80t (2)
therefore, with the equations (1) and (2) we have a systeme of equations:
x=70t
x=360-80t
we can solve this system of equations by equalization method.
70t=360-80t
70t+80t=360
150t=360
t=360/150=2.4 (≈2 hour 24 minutes)
Answer: the first train meet with the second train in 2 hour 24 minutes.
I think the problem is
2X+20=400
You just have to answer I think X and X equals that two numbers I’m not 100% sure but I’m trying to help
Answer: 117 degrees
Step-by-step explanation:
Answer:
m
=
4
Step-by-step explanation:
Given -
8
x
−
2
y
=
14
It is in the form
a
x
+
b
y
=
c
If a linear equation is in this form, then -
It slope is
−
a
b
In our case, we shall use this formula
m
=
−
8
−
2
=
4
To find the y-intercept put
x
=
0
8
(
0
)
−
2
y
=
14
−
2
y
=
14
y
=
14
−
2
=
−
7
To find the x-intercept put
y
=
0
8
x
−
2
(
0
)
=
14
8
x
=
14
x
=
14
8
=
7
4
Answer:
a = b + k + u
Step-by-step explanation:
hope this helps
