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3241004551 [841]

3 years ago

15

An irregular parallelogram rotates 360° about the midpoint of its diagonal. How many times does the image of the parallelogram c

oincide with its preimage during the rotation? A. 2 B. 4 C. 6 D. 8

1 answer:

Solnce55 [7]3 years ago

7 0

The answer is 2 only

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9. The Strawberry Festival is finally here! Mrs.

chubhunter [2.5K]

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Step-by-step explanation:

a)

x= gourmet pretzels

y= boxes of strawberries

system will be:

$\left \{ {{2x+4y=43 \atop {2x+2y=30}} \right.$

b)

$\left \{ {{2x+4y=43 \atop {2x+2y=30}} \right.$ $\left \{ {{x=21.5-2y \atop {2x+2y=30}} \right.$ $\left \{ {{- \atop {2(21.5-2y)+2y=30}} \right.$ $\left \{ {{- \atop {43-4y+2y=30}} \right.$ $\left \{ {{- \atop {-4y+2y=30-43}} \right.$ $\left \{ {{- \atop {-2y=-13}} \right.$ $\left \{ {{- \atop {y=\frac{13}{2} }} \right.$ $\left \{ {x=21.5-2(6.5)}} \atop {y=6.5}} \right.$ $\left \{ {{x=8.5} \atop {y=6.5}} \right.$

a box of strawberries is 6.5

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3 years ago