What is the graph of the system y= -2x + 3 and 2x + 4y= -8
Answers
y = -2x + 3 2x + 4y = -8
y = -2x + 3 y + 2x = 3
2x + 4y = -8
Subtract those equations 3y = -11 y = -11/3
y = -2x +3 -11/3 = -2x + 3 2x = 3 + 11/3 x = 3/2 + 11/6 x = 20/6 x = 10/3
therefore above lines will intersect in this ( 10/3 , -11/3 ) coordinates
Answer: C (third)
Step-by-step explanation:
Towns A and B are 400 miles apart. If a train leaves A in the direction of B at 50 miles per hour, how long will it take before that train meets another train, going from B to A, at a speed of 30 miles per hour?
Answers
from A :50/hour. *x(hour) From B : 30/hour *x(hour) 50 *x +30 *x =400 80 *x=400 x=5(hour) Then the train from A will make 50 *5=250 miles (These is fisik)
Find a cubic function with the given zeros. 7, -3, 2