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2 years ago

5

Two cArs traveled 200 miles. One car traveled at 50 miles per hours. It took the slower car 50 minutes longer to make the same t

rip. What is the speed of the slower car.

1 answer:

timofeeve [1]2 years ago

3 0

Her speed is going 129 per minute

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The mean length of 7 childrens' index finger is 9.4cm. The mean length of 5 adults' index finger is 10.2cm. What is the mean len

Deffense [45]

Answer:

9.73 cm to 2 DP

Step-by-step explanation:

Total of the lengths involved = 7*9.4 + 5*10.2

= 116.8 cm

So the mean of the 12 fingers

= 116.8/12

= 9.73 cm to 2 DP.

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2 years ago

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17) List the ways five dogs a Beagle, a Collie, a Greyhound, a Poodle and a

Gnoma [55]

Answer:

<u>10 pairs</u>

<u>It is a combination</u>

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Explanation:

This is a combination because the order does not matter: the Beagle - Collie couple is the same as the Collie - Beagle couple, so it is only counted once.

The formula for combinations is:

$C(m,n)=\dfrac{m!}{n!\cdot (m-n)!}$

For five diffferent dogs to be put in pairs, the number of different pairs is:

$C(5,2)=\dfrac{5!}{2!\cdot (5-2)!}=\dfrac{5\times 4}{2}=10$

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3 years ago

What are the values of 4?

ExtremeBDS [4]

Answer:

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2 years ago

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I need help with number 4

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3 years ago

Help please taking test right now

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3 years ago