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Anit [1.1K]
1 year ago
5

Bella bought 3.2 meters of ribbon to decorate her pencil case. each meter cost $0.46. how much did the ribbon cost?

Mathematics
2 answers:
zlopas [31]1 year ago
8 0

we know that

Each meter of ribbon cost \$0.46  

so

by proportion

Find the cost of 3.2 meters of ribbon

\frac{0.46}{1} \frac{\$}{meter} =\frac{x}{3.2} \frac{\$}{meter} \\ \\x=3.2*0.46 \\ \\x=\$1.472

therefore

<u>the answer is</u>

The ribbon cost \$1.472


Alex1 year ago
5 0

Answer:  The cost of the ribbon is $1.472.

Step-by-step explanation:  Given that Bella bought 3.2 meters of ribbon to decorate her pencil case and each meter cost $0.46.

We are to find the cost of the ribbon.

We have

the cost of 1 meter of ribbon = $0.46.

So, the cost of 3.2 meters of the ribbon will be

\$(3.2\times 0.46)=\$1.472.

Thus, the total cost of the ribbon is $1.472.

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Jonathons piggy bank contains 20 nickels 30 quarters and 50 one dollar coins. He picks 20 coins from the bank at random
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Answer:

All in all, Jonathan's piggy bank contains 100 coins. Among these coins, only 50 are one-dollar coins. Therefore, the theoretical probability of picking one-dollar coin from the piggy bank is equal to 50/100 or 1/2.  

Similarly, from the experiment, 20 coins were picked and among these there are 12 one-dollar coins. The answer to the second question is therefore 12/20 or 3/5.

Step-by-step explanation:

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2 years ago
A turtle walks 7/8 of a mile in 50 minutes. What is the unit rate when the turtle’s speed is expressed in miles per hour?
yKpoI14uk [10]

Answer:

21/20

Step-by-step explanation:

a) One hour is equivalent to 60 minutes.

So we can multiply 50 minutes by the fraction \frac{1 hour}{60 minutes}, so we could convert 50 minutes to hours.

It is:

50 minutes * \frac{1 hour}{60 minutes}=\frac{50}{60}hours

If we simplify the fraction, we have:

50 minutes = \frac{5}{6}hours

b) In order to express the turtle's speed in miles per hour, we have to divide

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So:

\frac{\frac{7}{8}miles }{\frac{5}{6}hours }

We simplify the expression by multiplying 7 mile by 6 and 8 by 5 hours:

\frac{\frac{7}{8}miles }{\frac{5}{6}hours}=\frac{42 miles}{40 hours} =\frac{21 miles}{20 hours}

4 0
1 year ago
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Jose rides his bicycle for 5 minutes to travel 8 blocks. He rides for 10 minutes to travel 16 blocks.
kolbaska11 [484]

Answer:

A=8 B=15 C=40

Step-by-step explanation:

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Shen’s mother gave him $10 to go buy groceries. He picked up a gallon of milk for $3.49, three pounds of oranges that cost $1.14
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Answer:

He estimated there were about $10.40 worth of groceries

Step-by-step explanation:

You want to round the prices up to the nearest tenth and then add them all.

3.50

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1.15

1.15

1.15

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10.45

So 10.45 is closest to 10.40 and you have to remeber that this is just an estimate so it will be less because we rounded the answer up.

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1 year ago
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If a random variable X is exponentially distributed with parameter λ=2, then P(X≥1) is equal to
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Answer:

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Step-by-step explanation:

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7 0
2 years ago
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