Answer:

Step-by-step explanation:

Subtracting 5 from both sides.

Adding fractions since denominators are equal.

Multiplying x on both sides.

Dividing both sides by -2.

Answer:

Step-by-step explanation:
The perpendicular bisector of a line passes through the mid-point of the line and the product of slopes of the line and perpendicular bisector will be -1.
So,

The line will pass through (7,6)
Now,

Let
m_2 be the slope of perpendicular bisector
So,
m_1*m_2 = -1
-2 * m_2 = -1
m_2 = -1/-2 = 1/2
The standard equation of line is:
y=mx+b
Where m is slope
So putting the value of slope and point to find the value of b

..
Answer:
it takes the commuter train 60 seconds to go 3 feet
3/8=x/20
Multiply both sides by 20.
20(3/8) = 60/8 = 15/2 = 7.5
7.5 = x
The thousand if this number is 533,736.
So we need to round by that place.
The answer is 534,000 because since the 7 is greater than 5, we need to round up.