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jarptica [38.1K]
3 years ago
12

Question 1: Assume that y varies inversely with x. If y=9 when x=7, find y when x=2. Enter in any fractions using a / (e.g. "1/2

" is the same as 12 and 1 1/2 is the same as 112).
Question 2:Assume that y varies directly with x. If y=9 when x=−3, find x when y=6. Enter in any fractions using a / (e.g. "1/2" is the same as 12).




Question 3:Assume that y varies directly with x. If y=−4 when x=2, find y when x=−6. Enter in any fractions using a / (e.g. "1/2" is the same as 12).
Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
6 0

Answer:

3

Step-by-step explanation:

trust me

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If 30 buses can carry 1,500 people, how many people can 5 buses carry? A 200 © 500 B 250 D 750​
maksim [4K]

Answer:

\boxed {\boxed {\sf 250 \ people}}

Step-by-step explanation:

Let's set up a proportion using the following setup.

\frac {buses}{people}=\frac {buses}{people}

We know 30 buses can carry 1,500 people.

\frac {30 \ buses}{1500 \ people}=\frac {buses}{people}

We don't know how many people 5 buses can carry, so we say 5 buses carry x people.

\frac {30 \ buses}{1500 \ people}=\frac {5 \ buses}{x \ people}

\frac {30 }{1500 }=\frac {5 }{x }

Cross multiply. Multiply the numerator of the first fraction by the second fraction's denominator. Then, multiply the first denominator by the second numerator.

30*x=1500*5\\30x=7500

Solve for x. It is being multiplied by 30. The inverse of multiplication is division. Divide both sides by 30.

30x/30=7500\\x=250

5 buses can carry 250 people.

7 0
3 years ago
Three friends collected aluminum cans from the neighborhood to recycle in total they receive 300 cans many collected 90 Jim coll
spin [16.1K]

Given

Total cans = 300

Manny= 90

Jim =100

Bob=110

Now their percentage

Manny percentage

\begin{gathered} manny=\frac{90}{300}\times100\text{ \%} \\  \\ Manny\text{ percentage=}\frac{90}{3}\text{ \%} \\  \\ Manny\text{ percentage =30  \%} \end{gathered}

Jim Percentage

\begin{gathered} Jim=\frac{100}{300}\times100\text{ \%} \\ Jim\text{ percentage=}\frac{1}{3}\times100\text{  \%} \\ Jim\text{ percentage=33.333\%} \end{gathered}

Bob percentage

undefined

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