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3 years ago

5

Mary and her brother John collect foreign coins. Mary has twice the number of coins that John has. Together they have 105 foreig

n coins. Find how many coins Mary has.

2 answers:

igor_vitrenko [27]3 years ago

6 0

John has 35 coins and Mary has 70.

I am Lyosha [343]3 years ago

5 0

Mary has 70 coins while her brother has 35. 70+35=105

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I am Lyosha [343]

The coordinates of polygon ABCD are:

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and

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To understand the transformed rule, just remove the coordinates of the actual polygon from the transformed polygon.

A' - A = (1, 1) - (4, 3) = (1 - 4, 1 - 3) = (-3, -2)

Similarly,

B' - B = (1, -2) - (4, 0) = (1 - 4, -2 - 0) = (-3, 2)

The same result will be obtained from other points (C and D). Therefore, the first option (-3, 2) is correct.

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