Answer:
a=28, b=-15
Step-by-step explanation:
![Method\ by\ linear\ combinaisons\\\left\{\begin{array}{ccc|c|c|}2a+5b&=&-19&-1&3\\3a+5b&=&9&1&-2\\\end{array}\right.\\\\\\\left\{\begin{array}{ccc}a&=&28\\5b&=&-75\\\end{array}\right.\\\\\\\left\{\begin{array}{ccc}a&=&28\\b&=&-15\\\end{array}\right.\\](https://tex.z-dn.net/?f=Method%5C%20by%5C%20linear%5C%20combinaisons%5C%5C%5Cleft%5C%7B%5Cbegin%7Barray%7D%7Bccc%7Cc%7Cc%7C%7D2a%2B5b%26%3D%26-19%26-1%263%5C%5C3a%2B5b%26%3D%269%261%26-2%5C%5C%5Cend%7Barray%7D%5Cright.%5C%5C%5C%5C%5C%5C%5Cleft%5C%7B%5Cbegin%7Barray%7D%7Bccc%7Da%26%3D%2628%5C%5C5b%26%3D%26-75%5C%5C%5Cend%7Barray%7D%5Cright.%5C%5C%5C%5C%5C%5C%5Cleft%5C%7B%5Cbegin%7Barray%7D%7Bccc%7Da%26%3D%2628%5C%5Cb%26%3D%26-15%5C%5C%5Cend%7Barray%7D%5Cright.%5C%5C)
Answer:
linear decreasing
explanation:
the line is straight so its decreasing at a LINEAR rate, and the line is going down so its DECREASING. Hope that helps have a nice day
Answer:
I think the answer is 194.6 miles on the third day
Step-by-step explanation:
Answer:
yessir
Step-by-step explanation:
Answer:
4 students sing in the class.
Step-by-step explanation:
20×.2=4