A semi-truck has 18 tires. A bike has 2 tires. How many fewer tires does a bike have than semi-truck?

Mathematics

2 answers:

stepan [7]3 years ago

4 0

18 - 2= 16

a bike has 16 tires fewer than a semi-truck

Agata [3.3K]3 years ago

3 0

16 tires because 18-2=16. The bike has 16 less tires than the truck.

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Santa gave kittens to 13 boys and girls. What is the ratio of kitten ears to kitten tails?

SVEN [57.7K]

Answer:

$Ratio = 2 : 1$

Step-by-step explanation:

Given

$Population = 13$ --- Boys & Girls

Required

Determine the ratio of the kitten ears to the tails

A kitten has 1 tail and 2 ears.

Assume each individual got 1 kitten each

This implies that,

$Number\ of\ tails= 1 * 13$

$Number\ of\ tails= 13$

$Number\ of\ ears= 2* 13$

$Number\ of\ ears= 26$

The ratio of ears to tail is then calculated as follows:

Ratio = Number of ears : Number of tails

This gives

$Ratio = 26 : 13$

Divide by 13

$Ratio = 26/13 : 13/13$

$Ratio = 2 : 1$

8 0

3 years ago

A lock has a three number code made up of 17 numbers if none of the numbers are allowed to repeat how many different ways can yo

Marrrta [24]

Answer:

680

Step-by-step explanation:

Use the binomial coefficient where you choose $k=3$ numbers out of $n=17$ possible numbers and find the total amount of combinations since order does not matter:

$\displaystyle \binom{n}{k}=\frac{n!}{k!(n-k)!}\\ \\\binom{17}{3}=\frac{17!}{3!(17-3)!}\\\\\binom{17}{3}=\frac{17!}{3!(14)!}\\\\\binom{17}{3}=\frac{17*16*15}{3*2*1}\\\\\binom{17}{3}=680$