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3 years ago

How much time does it take for a bird flying at a speed of 45 kilometers per hours to travel a distance of 1,800 kilometers

Mathematics

1 answer:

____ [38]3 years ago

4 0

Step-by-step explanation:

This is simply a case of division. since you already know that the bird is flying at 45 kilometres per hour, you should be able to devise that every hour the bird is going 45km

we are gonna use ratio for this

1:45

?:1800

first of all divide 1800 by 45, to find the number you are gonna multiply the other number by, secondly multiply ur answer by 1 since that is the number of hours it takes to for the bird to travel 45km, after u have suceeded in doing this, you already have ur answer which is 1800 divide by 45 times 1

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What is 2. 3/6 +1/6 +1 2/3

Kaylis [27]

3/6+1/6+1 2/3
Make 1 2/3 into an improper fraction:
5/3
Give them all common denominators by multiplying both sides of 5/3 by 2:
10/6
Then the question becomes:
3/6+1/6+10/6
Now you add the numerators and the denominator stays the same:
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Now you can simplify by dividing both sides by 2:
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Now you can make it a mixed number:
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Hope this helps :)

8 0

3 years ago

Read 2 more answers

Express 1/10 cm as a fraction of 3 metres

Liula [17]

Answer:

1/3000

Step-by-step explanation:

3 meters to centimeters:

3 × 100 = 300

= 1/10 ÷ 300

= 1/10/300

= 1/(10×300)

= 1/3000

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3 years ago

A roller coaster can accommodate 18 riders in 8 minutes. Complete the table with equivalent ratios.

12345 [234]

Answer:

36 riders in 16 minutes, 54 riders in 24 minutes, and 72 riders in 32 minutes.

Step-by-step explanation:

The roller coaster can accommodate 9 riders every 4 minutes. 36 riders in 16 minutes, 54 riders in 24 minutes, and 72 riders in 32 minutes all follow the common ratio.

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3 years ago

What is the coefficient of the second term in the expression 2n+7m+6

Nady [450]

Answer:

the answer is seven.

Step-by-step explanation:

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2 years ago

Suppose n(x)= 22 and n(y) is 13 what is the maximum number of elements X ∪Y can have ?

Nikolay [14]

The inclusion/exclusion principle states that

$|X\cup Y|=|X|+|Y|-|X\cap Y|$

That is, the union has as many members as the sum of the number of members of the individual sets, minus the number of elements contained in both sets (to avoid double-counting).

Therefore, $|X\cup Y|$ will have the most elements when the sets $X$ and $Y$ are disjoint, i.e. $X\cap Y=\emptyset$ , which would mean the most we can can in this case would be

$|X\cup Y|=|X|+|Y|=22+13=35$

(Note that $n(X)=|X|$ denotes the cardinality of the set $X$ .)

3 0

3 years ago