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mart [117]
3 years ago
13

I am four times as old as my daughter. In 20 years time I shall be twice as old as her. How old are we now?

Mathematics
1 answer:
SashulF [63]3 years ago
6 0

Answer:

If x is my daughter's age now, my age now is 4x. So now my daughter is 10 years old, and I'm 40 years old, and in 20 years she'll be 30 and I'll be 60, twice as hers.

Step-by-step explanation:

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Y=6x (1)
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Substitute y into (2)
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8 0
3 years ago
Read 2 more answers
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Answer:

area = 144\pi

Step-by-step explanation:

volume =  \frac{4}{3} \pi {r}^{3}  \\  \\ 288\pi =  \frac{4}{3} \pi {r}^{3} \\  \\ 3(288\pi) = 4\pi {r}^{3} \\  \\  \frac{3(288\pi)}{4\pi}  =  {r}^{3}  \\  \\ 216 =  {r}^{3}  \\  \\ r =  \sqrt[3]{216}  \\ r = 6

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The following two-way table describes student's after school activites. Find the probability that a randomly selected student is
stiv31 [10]

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<h3>How to determine the probability?</h3>

From the table, we have the following values

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The probability is then calculated as:
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2 years ago
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