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Setler79 [48]
3 years ago
13

A mother is three times as old as her daughter. Six years ago the mother's age was six times that of her daughter. What is their

present age?
Mathematics
1 answer:
alexandr1967 [171]3 years ago
4 0
The mum's age now = N
The daughter's age now = n
N=3n
N-6=6(n-6)
3n-6=6n-36
3n=30
n=10
The daughter's age now = 10
The mum's age now = 30

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I really don’t understand this and just need an explanation of how to do it.
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\bf ~\hspace{12em}\left( \cfrac{2n}{-3n\cdot -2n^2} \right)^4
\\\\[-0.35em]
\rule{34em}{0.25pt}\\\\
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\rule{34em}{0.25pt}\\\\
\left( \cfrac{2n}{-3n\cdot -2n^2} \right)^4\implies \left( \cfrac{1}{3n^2} \right)^4\implies \stackrel{\textit{distributing the exponent}}{\cfrac{1^4}{3^4n^{2\cdot 4}}}\implies \cfrac{1}{81n^8}

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Answer:

does NOT have right angles at the corners

Step-by-step explanation:

we are given that the sides of a table are 27" and 36" long.

If we assume the table to be rectangular, then by Pythagorean formula, we can find the diagonal and compare it to the 40" that we are given.

(refer to attached)

diagonal² = 27² + 36²

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because the diagonal that we found is not the same as the 40" that was given, we can conclude that the table is not a rectangle (i.e does not have right angles at the corners)

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