2 years ago

Robert is 14 years old and his dad is 38 years old. How many years ago was his dad exactly 7 times as old as Robert

Mathematics

1 answer:

evablogger [386]2 years ago

7 0

When robert was 4 years old so 10 years ago, i’m not that good at math but i’m pretty sure that’s the answer

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marissa [1.9K]

Answer:

exactly 12 !

Step-by-step explanation:

3/4 is the length need, times 12, which is the end result of scarves, equals 9, the yards of fabric !!

3/4 x 12 = 9

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2 years ago

3. A piece of white oak has a densityof 0.77 g/cm and a mass of 100 g,what would be the volume of thesample? PLEASE HELP!

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$\text{Volume}=129.87cm^3$

Explanation

Step 1

the density of an object is given by:

$\text{density}=\text{ }\frac{mass}{\text{volume}}$

Step 2

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Step 3

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$\begin{gathered} \text{density}=\text{ }\frac{mass}{\text{volume}} \\ 0.77\frac{g}{cm^3}=\frac{100g}{\text{volume}} \\ \text{volume}\cdot0.77\frac{g}{cm^3}=\text{1}00\text{ g} \\ \\ \text{Volume}=\frac{100\text{ g}}{0.77\frac{g}{cm^3}} \\ \text{Volume}=129.87cm^3 \end{gathered}$

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11 months ago

Which of the following pairs of fractions are equivalent?

AlekseyPX

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2 years ago

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kozerog [31]

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