R=train speed
p=plaane speed
t=time
d=st
100=tr
350=pt
p=4r-20
ok so 100 times 3.5=350
times 1st equaton by 3.5
350=3.5tr
350=pt
sub
3.5tr=pt
divide both sides by t
3.5r=p
sub p=4r-20
3.5r=4r-20
minus 3.4 from both sides
0=0.5r-20
add 20
20=0.5r
times 2
40=r
sub
p=4r-20
p=4(40)-20
p=160-20
p=140
plane=140kmph
train=40kmph
First piece of information:
• y = 3x -4
Second piece of information:
• y = -2x + 7
Third piece of information:
• y = -2/3x + 1
Answer:
n=-2
Step-by-step explanation:
22=-11n
u divide it and u get
n=-2
and ofc u keep the negative because ur dividing
What does n equal? if you can tell me i can help more
