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OpenStudy (anonymous):
Which expression is equivalent to –(–2m + 1)?
(Points : 1)
–3m
3m
–2m – 1
2m – 1
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OpenStudy (anonymous):
It would be c
OpenStudy (texaschic101):
do you know how to distribute through the parenthesis ?
OpenStudy (anonymous):
because by the distributive property -(-2m) becomes (2m) and -(+1) becomes -1
OpenStudy (texaschic101):
not C
OpenStudy (anonymous):
Why isn't it c?
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OpenStudy (anonymous):
Oh yeah
OpenStudy (anonymous):
It's D
OpenStudy (anonymous):
Thanks @texaschic101
OpenStudy (texaschic101):
- (- 2m + 1) = 2m - 1.....you have to distribute the - through the parenthesis
OpenStudy (anonymous):
What is the area of a circle whose radius is 20 meters?
(Points : 1)
20 m2
40 m2
200 m2
400 m2
could you help with this one too
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OpenStudy (anonymous):
Yeah
OpenStudy (anonymous):
so you need to use the equation
\[3.14r^2\]
OpenStudy (texaschic101):
A = pi * r^2
A = 3.14 * 20^2
you can drag out the calculator and do this
OpenStudy (anonymous):
Or\[3.14(20^2)\]
OpenStudy (anonymous):
So would it be A?
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OpenStudy (anonymous):
No it would be d
OpenStudy (texaschic101):
it is actually pi * 400...there just not putting in pi
OpenStudy (anonymous):
yea
OpenStudy (anonymous):
Medal? @NashGriersGirly
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