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sladkih [1.3K]
3 years ago
5

How do you tell if a number is irrational or rational?

Mathematics
1 answer:
Korvikt [17]3 years ago
6 0
A rational number is any number that can be expressed as a fraction
(ex: -5/2, 4 1/7, and 8/13)

An irrational number is any number that cannot be expressed as a fraction; a non-repeating, non-terminating decimal (ex: pi, 0.121231234...)

Hope this helps! :)
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Harper works at an electronics store as a salesperson. Harper earns a 6% commission on the total dollar amount of all phone sale
agasfer [191]

<u>Answer:</u>

The system of equations are

x + y = 2600   …….equation (1)

and, 6x + 5y = 13700  ……equation (2)

<u>Explanation:</u>

Let x = amount of sales of phone;

y = amount of sales of computer

For phone, 6% of sales is 6% of x, or 6% * x = 0.06x.

Similarly for computer,

5% of y = 0.05y

Given the total sales; x + y = 2600

And commission; 0.06x + 0.05y = 137; or 6x + 5y = 13700

Therefore the system of equations are

x + y = 2600   …….equation (1)

6 x + 5 y = 13700  ……equation (2)

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a shop is having a sale. all items are reduced by 20%.work out the sale price of an item normally priced at £37​
Nookie1986 [14]

Answer:

£29.6

Step-by-step explanation:

37/5=7.4

37-7.4=29.6

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3 years ago
if a circle of radius 2 is made to roll along the x-axis, what is an equation for the path of the center of the circle?
Blizzard [7]
It would be 2 height above the x axis
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Julie wanted to earn money to attend a basketball camp. She started with a gift of money from her grandparents and then saved $2
adoni [48]
The equation would be y = 25x + 50

In order to find this equation, we need to know how much the gift from her grandparents was. To do so, we have to find out how much she's saved from dog walking. 

Since she saves $25 a month for 7 months, we can find the total amount as:

25*7 = 175

Then we can subtract that from the total she has saved to find the amount for the gift.

225 - 175 = 50

Finally, we put the amount per month in the equation with the gift as the y intercept to create the equation above. 
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Divide 42 by two and then multiply by 5
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3 years ago
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