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Irina18 [472]
3 years ago
8

David’s age is four times Alisa’s age. In eight years, David will be twice as old as Alisa. How old is each now?

Mathematics
1 answer:
Andreas93 [3]3 years ago
6 0

David is 16 years old.

Alisa is 4 years old.

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Answer:

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(1 2/7-3/14)/8/15trying to remember how to do this
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We will write it as a fraction in ordet to solve, that is:

\frac{(1\frac{2}{7}-\frac{3}{14})}{(\frac{8}{15})}

We then operate as follows:

\frac{((\frac{7}{7}+\frac{2}{7})-\frac{3}{14})}{(\frac{8}{15})}\Rightarrow\frac{(\frac{9}{7}-\frac{3}{14})}{(\frac{8}{15})}\Rightarrow\frac{(\frac{15}{14})}{(\frac{8}{15})}\Rightarrow\frac{15\cdot15}{14\cdot8}\Rightarrow\frac{225}{112}

We have this, since 1 integer will be equal as a numerator divided by a denominator with equal values. Examples 1 = 2/2, 1 = 45/45, ...

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TiliK225 [7]

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Step-by-step explanation:

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3 years ago
Find the inequality represented by the graph.
iris [78.8K]

Answer:

<h2>x \geqslant  \frac{y + 4}{3}</h2>

Explanation;

Associated line with this equation is:

y=mx+c

when,

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- 1 = m- 4 \\  - m =  - 4 + 1 \\  - m =  - 3 \\ m =3 \\

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x \geqslant  \frac{y + 4}{3}

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The inputs are 1 and -1 when the output is 2.

Step-by-step explanation:

The given function is

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Then we set y = f (x)

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By dividing each side by 10 we get

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Then we solve for x

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Now we have to find the input(s) when the output is 10

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