30 miles/hour * x hours= 40 miles/hour * (x-4) hours
Distribute the 40, so you get
30x=40x-160
Subtract 40x from both sides
-10x=-160
Divide both sides by -10
x=16
They drove 16 miles
Translate the English to Math language:
Let x be that number
2x -3 = x-6 solve for x ; x=-3
Step-by-step explanation:
y = ax + b => ax +b = y
-5= a.1+ b => a + b = -5
-9= a.2+b => 2a+b = -9
________-
-a = 4
=> a = -4
a+b=-5 => b = -5 -a
b = -5+4 = -1
so, the Equation : y = -4x -1
Answer:
by alternate interior angles
Step-by-step explanation:
see the attached figure to better understand the problem
we know that
<u><em>Alternate interior angles</em></u> are formed when a transversal (in this problem line T) passes through two lines (line L1 and line L2) . The angles that are formed on opposite sides of the transversal and inside the two lines are alternate interior angles. When the lines are parallel, the alternate interior angles are congruent.
so
----> by alternate interior angles
----> by alternate interior angles
we have that
therefore
Answer:
1
Step-by-step explanation:
the greatest common factor of 9 and 22 is 1.