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n200080 [17]
3 years ago
9

Long ago, people decided to divide the day into units called hours. They chose 24 as the number of hours in one day. Why is 24 a

more convenient choice than 23 or 25?
Mathematics
1 answer:
jasenka [17]3 years ago
7 0
Because 24 is an even number. This means it has more factors and is easier to divide into integers than 23 or 25.
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4073.76

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A 2-column table with 5 rows. Column 1 is labeled Days to Set Up with entries 1.5, 3, 4.5, x, 7.5. Column 2 is labeled Number of
Lorico [155]

This directly proportional relationship between p and q is written as p∝q  where that middle sign is the sign of proportionality. The value of x is 6.

<h3>What are directly proportional and inversely proportional relationships?</h3>

Let there are two variables p and q

Then, p and q are said to be directly proportional to each other if

 p = kq

where k is some constant number called the constant of proportionality.

This directly proportional relationship between p and q is written as

 p ∝ q  where that middle sign is the sign of proportionality.

In a directly proportional relationship, increasing one variable will increase another.

Now let m and n be two variables.

Then m and n are said to be inversely proportional to each other if

m = \dfrac{c}{n} \\\\ \text{or} \\\\ n = \dfrac{c}{m}

(both are equal)

where c is a constant number called the constant of proportionality.

This inversely proportional relationship is denoted by

m \propto \dfrac{1}{n} \\\\ \text{or} \\\\n \propto \dfrac{1}{m}

As visible, increasing one variable will decrease the other variable if both are inversely proportional.

Let the days to set up with entries be represented by a, while the number of concerts is represented by b. Now, It is known that the days to set up with entries and the number of the concert are in a relationship. Therefore, we can write the relationship as,

a ∝ b

a = k b

Now, if we substitute the values from the first row, we will get,

1.5 = k × 1

1.5 = k

Thus, the value of k is 1.5.

Now, if we substitute the entries from the 4th row, we will get,

a = k × b

x = 1.5 × 4

x = 6

Hence, the value of x is 6.

Learn more about Directly and Inversely proportional relationships:

brainly.com/question/13082482

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8 0
2 years ago
Alexandra has $15 to buy drinks for her friends at the baseball game. Soda costs $2.75 and bottled water costs $2.00. This relat
prisoha [69]

Answer:

2.75s+2w\leq 15

Step-by-step explanation:

Let

s-------> the number of sodas

w-----> the number of bottled water

we know that

The inequality that represent the situation is equal to

2.75s+2w\leq 15

using a graphing tool

The solution is triangular shaded area

see the attached figure

The domain (number of sodas) is all positive whole numbers belong to the interval [0,1,2,3,4,5]

The range (number of bottled water) is all positive whole numbers belong to the interval [0,1,2,3,4,5,6,7]

6 0
3 years ago
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