Answer:
7/15
Step-by-step explanation:
7+8=15
there's 7 girls so you have 7/15 chance of getting a girl
T=time
d=st
r=train speed
p=plane speed
<span>160=rt
</span><span>720=pt
speed of plan is 20kmph less than 5 times speed of train
p=5r-20
we notice that 160 times 4.5=720
times first equaton by 4.5
720=4.5rt
720=pt
set equal
4.5rt=pt
divide both sides by t
4.5r=p
sub </span><span>p=5r-20 for p
4.5r=5r-20
minus 4.5r from both sides
0=0.5r-20
add 20 to both sides
20=0.5r
times 2 both sides
40=r
sub back</span><span>
p=5r-20
p=5(40)-20
p=200-20
p=180
plane is 180kmph
train is 40kmph
</span>
Answer:
a reflection will never change the orientation of a figure
<span>Negative 1/4 multiplied by negative 6/11:
(-1/4) * (-6/11) = 6/44 = 3/22</span>
Answer:
A
Step-by-step explanation:
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