Answer:

Step-by-step explanation:
Remember that 
Then,

But
and 
Then

Answer: -38
Step-by-step explanation:
First he would have to walk back 19 steps to get back to his orginal position, then he would have to further go back another 19 steps.
The answer is 8km.
1:100,000 = 1.6 miles = 1 kilometer x 8 = 8 km
Answer:
x + 2y = -1
Step-by-step explanation:
First, we'll find the slope.
Slope = (2 - (-3)) / (-5 - 5) = 5 / -10 = -1/2
Since we know the slope and a point that belongs to the line, we can write this in point-slope form which will be:
y - 2 = -1/2(x - (-5)) *I used (-5, 2) but it doesn't matter which point you use
y = -1/2(x + 5) + 2
y = -1/2x - 1/2
Standard form:
1/2x + y = -1/2
x + 2y = -1
Answer:
x = 24
Step-by-step explanation:
using the rule of exponents
×
= 
consider left side
× 
=
× 
= 
then
= 
since the bases on both sides are equal, both 5 then equate exponents
= 16 ( multiply both sides by 6 )
4x = 96 ( divide both sides by 4 )
x = 24