1. we can add them to eliminate y's
3x-4y=-16
<u>-x+4y=24 +</u>
2x+0y=8
2x=8
divide by 2
x=4
sub back
-x+4y=24
-4+4y=24
add 4 both sides
4y=28
divide by 4
y=7
(x,y)
(4,7)
3.
add them to eliminate y's
-5x+3y=12
<u>-2x-3y=-33 +</u>
-7x+0y=-21
-7x=-21
divide both sides by -7
x=3
sub back
-2x-3y=-33
-6-3y=-33
add 6 to both sides
-3y=-27
divide both sides by -3
y=9
(x,y)
(3,9)
1. (4,7)
3. (3,9)
It will have 2 solutions because, if you take out the (-) it will be a whole diffrent answer!
Answer:
I'm sorry I can help you maybe a little bit if that's okay. Btw what grade are you in?
Step-by-step explanation:
Since her velocity or speed is 4.1 mile per hour
the distance traveled can be found using
d=vt
d=(4.1)(0.85)=3.485 miles
is our answer logical if she travels 4.1 miles in a single hour that means in less than an hour she will travel less than 4.1 which is true for our answer.