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diamong [38]
4 years ago
15

Marked out of 1.00

Mathematics
1 answer:
grin007 [14]4 years ago
7 0

Answer:

\large \boxed{\sf \ \ 64 \ \ }

Step-by-step explanation:

Hello,

2(a+b+c)=(a+b)+(b+c)+(c+a)=4+5+7=16\\\\\text{*** divide by 2 both sides ***}\\\\(a+b+c)=\dfrac{16}{2}=8 \ \ \text{ so...}\\\\(a+b+c)^2=8^2=\large \boxed{64}

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

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Sorry the format dident turn out how i wanted it to be, I hope this helps.

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What are the coordinates of each point after quadrilateral ABCD is reflected across the y-axis and then translated 2 units down?
dezoksy [38]

Answer:

A" = (3,2)\ \ B" = (-1,1)\ \ C" =(-3,4)\ \ D =(-1,4)

Step-by-step explanation:

Given [Missing]

A = (-3,4)

B = (1,3)

C =(3,6)

D =(1,6)

The first transformation: reflection across the y-axis.

The rule is: (x,y)==>(-x,y)

So:

A = (-3,4) ==>A' = (3,4)

B = (1,3) ==> B' = (-1,3)

C =(3,6) ==> C' = (-3.6)

D =(1,6) ==> D' = (-1,6)

Translation 2 units down

The rule is: (x,y)==>(x,y-2)

So:

A' = (3,4) ==> A" =(3,4-2) =(3,2)

B' = (-1,3) ==> B" = (-1,3-2) = (-1,1)

C' = (-3.6) ==> C" = (-3,6-2) = (-3,4)

D' = (-1,6) ==> D" =(-1,6-2) = (-1,4)

Hence:

A" = (3,2)\ \ B" = (-1,1)\ \ C" =(-3,4)\ \ D =(-1,4)

4 0
3 years ago
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