Cross multiply:
30n = 2400. Then n = 80.
Midpoint formula
mid of (x1,y1) and (x2,y2) is
so
(22,15)=
therefor
22=
and
15=
slv each
22=
times both sides by 2
44=18+x1
minus 18 both sides
26=x1
15=
times both sides by 2
30=6+y1
minus 6
24=y1
the other point is (26,24)
Answer:
3 miles per hour
Step-by-step explanation:
We know that distance over time, d/t, is equal to rate, r.
By knowing this, we can substitute in the distance and time given into the formula:
d/t = r
15/5 = r
To solve this, we just need to simplify 15/5 to give us our answer:
15/5 = r
3 = r
This means that our rate is 3 miles per hour.
In order to find the slope of the line, we can pick two points on the line and plug them into the slope equation (y2-y1)/(x2-x1)
two points could be (-3,-3) and (0,-1)
slope = (-1 - -3)/(-3-0) = 2/3
an equation for the line can be written using the slope and the y intercept (y value when x=0)
y = (2/3)x - 1
to find the a and b values look at the graph along the x and y axis. you can also count 2 points up and 3 points left from (0,-1) until you reach that point since it has the same slope. a=3, b=1
the y coordinate when x=0 is -1 because that is the y intercept
Answer is -23
Explaination:
-9z is the same thing as -9 times x, and we need to use the inverse operation to isolate the variable. So we would divide -9 on both sides, -9 divided by -9 is 0 and -207 divided by -9 is 23.
