I'm assuming you want help with numbers 7 and 8 because multiplication should be easy
so
7. rico average=15.5mph or 15.5/h
in 2.5 hours how far travel
15.5 in 1 hour
in 2 hours he will travel 2 times 15.5 miles
so in 2.5 hours he will travel 15.5 times 2.5 miles or 38.75
8. use estimation to show reasonable
15.5 can be rounded to 16
16 times 2 is 32
16 times 3 is 48
0.5 is half of 1 so the average is about the answer
(32+48)/2=80/2=40
he will travel about 40 miles (less since you rounded 15.5 up to 16)
so it is reasonable
Try this solution (the way shown is not the shortest one):
The task on the left part:
1. note, the point P and R have coordinates (-4;-4) and (-3;-2).
2. using the coordinates of points P and R it is possible to make up the equation of the required line:
The task of the right part:
1. note, the common view of the equation of the line is y=kx+b, where b - an intersection point of the Y-axis and the given line; k=QR/PQ.
2. according the picture b= -5, k=4/1=5, so <u>y= -4x-5</u>
8. line rs is perpendicular bisector of line jl because they intersect, k is the midpoint because it is where they cross each other <span />
Answer:
Step-by-step explanation:
if the question is
-7p * -4r * 39
then it's
-1*-1*7*4*39*p*r
now you just need a calculator to find the numbers that are multiplied together
-1 * -1 = 1
7*4=28
28*39*p*r
1092*p*r
1092pr
Answer: did you get the answer??????
Step-by-step explanation: