Mathematics
11 Online
OpenStudy (volleyballlover55):
helppp!
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OpenStudy (volleyballlover55):
OpenStudy (volleyballlover55):
@karim728
OpenStudy (sshayer):
what do you think?
OpenStudy (sshayer):
\[\sqrt{9}=3\]
\[0.333...=\frac{ 1 }{ 3 }\]
OpenStudy (volleyballlover55):
A?
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OpenStudy (sshayer):
correct
OpenStudy (karim728):
cant be A
OpenStudy (rayep12):
all rational number are repeating decimals, terminating decimals or whole numbers
OpenStudy (triciaal):
rational means it can be expressed as the ratio of 2 integers
OpenStudy (rayep12):
-2/5 is rational because it is teminating
-0.4
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OpenStudy (volleyballlover55):
but 7 is an irrational number...
OpenStudy (rayep12):
1.5 is also teminating
OpenStudy (sshayer):
according to me A is correct.
OpenStudy (rayep12):
0.33333... is repeating
OpenStudy (rayep12):
\[\sqrt{9}\] is a whole number which is 3
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OpenStudy (karim728):
ts qrt(9) a rational number?
OpenStudy (karim728):
therefore option A and b are out
OpenStudy (sshayer):
\[\sqrt{9}=3=\frac{ 3 }{ 1 },ratio~of~two~integers.\]
OpenStudy (triciaal):
@karim728 why do you think A is out
OpenStudy (rayep12):
\[\sqrt{7}\] is not rational because the decimal is not repeating itself.
Therefore A could be the only logical answer
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OpenStudy (volleyballlover55):
yay! anyways next! :)
OpenStudy (volleyballlover55):
@sshayer ? :)
OpenStudy (sshayer):
think about last option.
OpenStudy (volleyballlover55):
D?
OpenStudy (volleyballlover55):
@sshayer
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OpenStudy (sshayer):
|dw:1469847235000:dw|
correct
OpenStudy (volleyballlover55):
yay! next :)
Which of the following is equivalent to (ab)^4?
a^ 4b
a^4b^4
ab^4
4ab
OpenStudy (sshayer):
\[\left( xyz \right)^n=x^ny^nz^n\]
OpenStudy (volleyballlover55):
B?
OpenStudy (sshayer):
correct.
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OpenStudy (volleyballlover55):
ok next!
OpenStudy (rayep12):
think about the space between the big triangle and the little triangle
divide the number of squares between AC in the big triangle by he smaller one
OpenStudy (volleyballlover55):
C?
OpenStudy (rayep12):
no it would be a
OpenStudy (volleyballlover55):
ok...
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OpenStudy (sshayer):
A is correct.
OpenStudy (volleyballlover55):
ok next!
OpenStudy (rayep12):
because the big triangle has 9 spaces in between AC and the small triangle has 3 spaces
OpenStudy (volleyballlover55):
i clicked b by accident.. :)
OpenStudy (sshayer):
from Ato C 9 squares from A' to C' 3 squares
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OpenStudy (rayep12):
correcto volleyball
OpenStudy (rayep12):
B is correct
OpenStudy (volleyballlover55):
really! B is correct?
OpenStudy (rayep12):
yep
OpenStudy (sshayer):
i think A is correct
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OpenStudy (rayep12):
you are adding the expression 4 times
OpenStudy (sshayer):
it is rotation by 180 degree
OpenStudy (rayep12):
?wait for which one
OpenStudy (sshayer):
for A
OpenStudy (volleyballlover55):
are we talking about this problem?
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OpenStudy (rayep12):
thats what i am talking about
OpenStudy (sshayer):
here B is correct.
OpenStudy (volleyballlover55):
ohh ok perfect!!! thats what i wanted to know :)
OpenStudy (volleyballlover55):
ok next!
OpenStudy (volleyballlover55):
??
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OpenStudy (evoker):
Hmm they look identical except for the primes
OpenStudy (volleyballlover55):
@rayep12 ?
OpenStudy (rayep12):
yeah?
OpenStudy (volleyballlover55):
what do you think the answer is.. ?
OpenStudy (rayep12):
A
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OpenStudy (volleyballlover55):
ok..
OpenStudy (volleyballlover55):
next!
OpenStudy (rayep12):
bring it
OpenStudy (volleyballlover55):
OpenStudy (rayep12):
D
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OpenStudy (rayep12):
next hurry
OpenStudy (volleyballlover55):
OpenStudy (rayep12):
C