Hope this helps but I think the answer is -33/20 which simplifies to -1 13/20
Answer:
d
Step-by-step explanation:
The speed is the independent variable because when it changes all the others change because it changed
20. 3 notebooks
21. 2ab, the coefficient is 2
22. t = 16
Hope this helps! :)
Y= -7x +9 to graph plot point (0,9) and then go down 7 and to the right 1 (plot another point and connect line)
Recall your d = rt, distance = rate * time
let's say we have two cars, A and B, B has a speed rate of "r", so A is the faster one and has a speed rate of " r + 10 "
they both are 300 miles apart after 3hrs, after 3hrs, car has been running for 3hrs, and car B has also been running for 3hrs, so their time is the same
we know their distances added up, is 300miles, so if car B covered say, "d" distance on those 3hrs, car A covered the slack, " 300 - d "

solve for "r"