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Pavlova-9 [17]
3 years ago
6

Please answer ASAP. The question is down below

Mathematics
1 answer:
belka [17]3 years ago
4 0

Answer:  A

<u>Step-by-step explanation:</u>

Notes: Dividing by a fraction means to multiply by its reciprocal.

           The denominator cannot equal zero.

\dfrac{5a^3bc}{8ab^3}\div\dfrac{-ab^2}{6a^5b}\cdot \dfrac{2a^2b^3}{3b}\qquad \rightarrow a\neq 0,b\neq 0\\\\\\=\dfrac{5a^3bc}{8ab^3}\cdot\dfrac{6a^5b}{-ab^2}\cdot \dfrac{2a^2b^3}{3b}\\\\\\=\dfrac{5\cdot 6\cdot 2\quad a^3\cdot a^5\cdot a^2\quad b\cdot b\cdot b^3\quad c}{8\cdot -1 \cdot 3\quad a\cdot a\qquad  b^3\cdot b^2\cdot b \quad}\\\\\\=\dfrac{-60a^{10}b^5c}{-24a^2b^6}\\\\\\=\dfrac{-5a^8c}{2b}

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sasho [114]

Answer:

\displaystyle b=0.45\ h

\displaystyle p=0.55\ h

Step-by-step explanation:

<u>Cinematics </u>

When an object moves at a constant speed, it can be computed as

\displaystyle v=\frac{x}{t}

Where x is the distance traveled and t the time needed to complete it at the constant speed v

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Elia rode her bicycle from her house to the beach at 18 km/h and then from the beach to the park at 15 km/h, taking 1 hour in the whole travel, each distance being equal. If we call b as the number of hours it took Elia to ride from her house to the beach, and p the number of hours it took her to ride from the beach to the park, then we can compute

\displaystyle b=\frac{x}{18}

\displaystyle p=\frac{x}{15}

The question doesn't ask for something in particular, so I'm helping you by solving the complete problem. We know the total time is 1 hour, so

\displaystyle b+p=1

Replacing b and p

\displaystyle \frac{x}{18}+\frac{x}{15}=1

Multiplying by 90

\displaystyle \frac{90x}{18}+\frac{90x}{15}=90

Simplifying and solving for x

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4 years ago
Please help me with this problem
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... matches the 2nd choice

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3 years ago
WILL GIVE BRAINLYEST
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Answer:

B = \frac{4}{9}A

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Given that B varies directly as A then the equation relating them is

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B = \frac{4}{9}A ← equation of variation

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