Mathematics: Jonathan is 27 years younger than Dre. Dre is two years younger than Jonathan s age doubled. How old are Jonathan and Dre? *

Jonathan is 27 years younger than Dre. Dre is two

Ответ:

konoisaa

19.03.2021

Mathematics

Dre is 56 and Jonathan is 29

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Ответ:

beanokelley

19.03.2021

Mathematics

Step-by-step explanation:

j=d-27

d=2j-2, using j from above makes this equation become

d=2(d-27)-2

d=2d-54-2

d=2d-56

-d=-56

d=56, since j=d-27

j=56-27

j=29

So John is 29 and Dre is 56

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Ответ:

jby

23.07.2020

Mathematics

$\displaystyle\bf \boxed{ V_{cylinder}=\pi r^2h \ ; \ \ V_{cone}=\frac{1}{3} \cdot \pi r^2h} \\\\\\V_0=V_{cylinder}+V_{cone}=? \\\\V_0=\frac{1}{3} \cdot 3^2\cdot 5\pi +3^2\cdot4\pi =15\pi +36\pi =\boxed{51\pi \ ft^3}$

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Jonathan is 27 years younger than Dre. Dre is two years younger than Jonathan's age doubled. How old are Jonathan and Dre? *

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