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2 years ago

Taree fourts of the 64 books were math books. determine the percent of the books that were math books.

Mathematics

1 answer:

Volgvan2 years ago

4 0

Answer: 75% - these are books on mathematics.

Step-by-step explanation:

$\dfrac{3}{4} \cdot 64 = 48\\$

64 - 100%

48 - x%

$\dfrac{64}{100} =\dfrac{48}{x}\\\\x=\dfrac{48 \cdot 100}{64} \\\\x=75 \%$

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3 years ago

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3 years ago

An 8.0 kg block is moving at 3.2 m/s. A net force of 10 N is constantly applied on the block in the direction of its movement, u

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Answer:

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Step-by-step explanation:

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2 years ago

HELP PLEASE!!! I need help with this question!

AlexFokin [52]

Answer:

$\large\boxed{PS=10\sqrt5}$

Step-by-step explanation:

ΔPQS, ΔRQP and ΔRPS are similar (AA). Therefore the sides are in proportion:

$\dfrac{QR}{RP}=\dfrac{RP}{RS}$

We have:

$QR=5,\ RS=20$

Substitute:

$\dfrac{5}{RP}=\dfrc{RP}{20}$ cross multiply

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Use the Pythagorean theorem:

$PS^2=PR^2+RS^2$

Substitute:

$PS^2=10^2+20^2\\\\PS^2=100+400\\\\PS^2=500\to PS=\sqrt{500}\\\\PS=\sqrt{100\cdot5}\\\\PS=\sqrt{100}\cdot\sqrt5\\\\PS=10\sqrt5$

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2 years ago

Taree fourts of the 64 books were math books. determine the percent of the books that were math books.​

Taree fourts of the 64 books were math books. determine the percent of the books that were math books.