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kenny6666 [7]
3 years ago
10

Age Problem. Please help. I suck at these.

Mathematics
1 answer:
eimsori [14]3 years ago
7 0
Let Cynthia's age be C, then Abigail's age A

since Abigail is 8 years older, her age A = C+8.

20 years ago Cynthia's she was C-20 and Abigail was A-20=3(C-20)

A-20=3C-60
A=3C-40
but we just said A=C+8
so 3C-40=C+8
2C=48
C=24
A=24+8=32

Cynthia's age is 24 and Abigail's age is 32
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Step-by-step explanation:

we know that

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<u><em>Applying the triangle inequality theorem</em></u>

1)

ED+EF > DF\\4+9 > DF\\13 > DF\\DF < 13\ units

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ED+DF > EF\\4+DF > 9\\DF > 5\ units

so

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The triangle DEF is a scalene triangle (the three length sides are different)

therefore

<em>The statements that are true are</em>

D E + E F greater-than D F

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