3 years ago

Who will get the rolls done first ?

2 answers:

8 0

Nora:
8 rolls per 10 min = 8/10 roll/min
= 4/5 roll per min

Eli:
10 rolls per 12 min = 10/12 roll/min
= 5/6 roll per min

Eli is faster; 5/6 > 4/5

Gekata [30.6K]3 years ago

7 0

Hello!

Divide the amount of rolls they can make (10) and (8) by the amount of time they have (40 mins):

40/10 = 4
40/8 = 5

So, Eli will finish making the rolls first.

I hope that was helpful! c:

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

Ad libitum [116K]

Answer:

The correct options is A.

Step-by-step explanation:

The each diagonal of an irregular parallelogram divides the parallelogram in two equal and congruent parts. The diagonal bisects each other.

It means, if a irregular parallelogram rotates 180° about the midpoint of its diagonal, then the image of the parallelogram coincide with its preimage during the rotation.

If a irregular parallelogram rotates 360° about the midpoint of its diagonal, then the image of the parallelogram coincide 2 times with its preimage during the rotation.

Therefore the correct option is A.