Answer:
Step-by-step explanation:
If you drive straight north then turn and drive straight east, you have driven 2 sides of a right triangle. The straight line distance from where you are to where you started from is the hypotenuse of the right triangle. Use Pythagorean's Theorem to solve:
and
and
That means that length of the hypotenuse is 45.
45 miles is the distance.
Answer:
b = 40
Step-by-step explanation:
A heater repairman charges $40 to visit a home, plus $70 per hour for the time he spends on the repair.
This situation can be described by an equation of the form y=mx+b , where
x = the time in hours
y = the cost in dollars.
What is the value of b in this equation?
A heater repairman charges $40 to visit a home, plus $70 per hour for the time he spends on the repair
Writing the above in an equation =
y = $70 × x + $40
y = 70x + 40
Therefore, the value of b in the expression = 40
They both have no whole number
Answer:
t = 3.4285 or 24/7
Step-by-step explanation:
Sub f = 2t + 1 into the other equation
7(2t + 1) = 55
Expand
14t + 7 = 55
Rearrange
14t = 55 - 7
14t = 48
t = 3.4285 or 24/7
Answer:
y-3 = 2(x-1)
Step-by-step explanation:
Point slope form is
y-y1 = m(x-x1)
where m is the slope and (x1,y1) is a point on the line
y-3 = 2(x-1)