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Varvara68 [4.7K]
3 years ago
7

The flower shop sold roses and tulips. The number of roses sold was 5 less than twice the number of tulips sold. If the shop sol

d 106 flowers in total, how many of each kind of flowers were sold?
Mathematics
1 answer:
LenaWriter [7]3 years ago
7 0

Answer: the number of roses sold is 69 while number of tulips is 37

Step-by-step explanation:

Let x represent the number of roses that the flower shop sold.

Let y represent the number of tulips that the flower shop sold.

The number of roses sold was 5 less than twice the number of tulips sold. This means that

x = 2y - 5 - - -- -- - - - - - ;1

If the shop sold 106 flowers in total, it means that

x + y = 106

Substituting x = 106 - y into equation 1, it becomes

106 - y = 2y - 5

3y = 106 + 5 = 111

y = 111/3 = 37

x = 106 - y = 106 - 37

x = 69

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Classrooms on one side of the science building are all numbered with consecutive odd integers. If the first​ room, the room with
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Answer:

The sum of the first five classroom numbers in a row is 5k + 20

Step-by-step explanation:

Since the smallest classroom​ number on the side of the building is numbered k​ and each consecutive odd integer is separated by a difference of  

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Therefore:  

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The sum of the five consecutive class rooms are given as:

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3 years ago
a coin lands on heads 200 times. the relative frequency of heads is 0.4. how many times was the coin thrown?
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Answer:

The number of times coin thrown was <u>500</u>.

Step-by-step explanation:

Given:

A coin lands on heads 200 times. the relative frequency of heads is 0.4.

Now, to find the times coin was thrown.

Let the number of times coin thrown was be x.

Relative frequency = 0.4.

Number of lands on heads = 200.

So, to get the number of times coin was thrown we put formula:

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<em>By cross multiplying we get:</em>

0.4x=200

<em>Dividing both sides by 0.4 we get:</em>

x=500.

Therefore, the number of times coin thrown was 500.

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