Answer:
Step-by-step explanation:
Độ dài vecto a= căn bậc hai của (-3)*(-3)+4*4=5
Answer:(6,8)
Step-by-step explanation: I didn't use a formula, but since (3,4) was the midpoint I went out three more and up four more, which got me to (6,8).
Simple...
you have:
-2x+5y=10
re-write in y=mx+b form...
-2x+5y=10
+2x +2x
5y=2x+10
Now divide....
5y=2x+10

y=

Now it's easy to see the slope and y-intercept...
Slope:

Y-intercept:2
Thus, your answer.
Answer:
1. $2.50
2. 2/5lb
Step-by-step explanation:
1. 2lbs=$5.00 so that means 1lb=$2.50.
2. 1lb=$2.50 so that means 1/5lb=$0.50 which you can then conclude that 2/5lb=$1.00