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3 years ago

Leah has three fewer than 4 times as many DVDs as Sonia has. Leah has 37 DVDs how many DVDs does sonia have

Mathematics

1 answer:

VashaNatasha [74]3 years ago

4 0

X = sonias dvds

37 = 4x - 3
+3 +3

40 = 4x

10 = x

sonia has 10 dvds

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Answer:

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Fundamental Theorem of Calculus

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$\boxed{\textsf{For }\sqrt{a^2-x^2} \textsf{ use the substitution }x=a \sin \theta}$

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$\textsf{Substitute back in }3 \cos \theta=\sqrt{9-x^2}:$

$\implies \dfrac{x}{9\sqrt{9-x^2}} +\text{C}$

Learn more about integration by substitution here:

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