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Liono4ka [1.6K]
3 years ago
6

Definition and example of variable

Mathematics
2 answers:
mina [271]3 years ago
7 0

Answer:

a varible is a unknown quanity that is represented by a letter for example 'x ' is an variable

Step-by-step explanation

Studentka2010 [4]3 years ago
6 0

Answer:

Step-by-step explanation:

Definition: A letter that is placed in an unknown number place.

Example: 8+B+9

        The variable would be B.

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the equation says that energy and mass (matter) are interchangeable; they are different forms of the same thing.

Step-by-step explanation:

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Derek buys a house for £150,000
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Answer:

cost price=$150,000

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profit= $154,000-$150,000=$4,000

Therfore Percentage Profit= 4,000÷15,000×100=2.7%

Percentage Profit =2.7%

7 0
3 years ago
What is 3.38 rounded to the nearest tenth of a dollar
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It would round to $3.40
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3 years ago
Julia rounded to the nearest ten to estimate the difference between two numbers. The estimated difference was 10. What are four
serious [3.7K]

To round off to 10, the difference should range from 5 to 14. If the difference between two numbers is from 5 to 14, they all are rounded to 10.

Example:

18-9=9 (near to 10)

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3 0
3 years ago
Which of the following describes the graph of y = x² - 225?
lara [203]

Answer:

option 4. The graph has zeroes at x = 15 an x = -15 and it opens upward.

Step-by-step explanation:

we have

y=x^{2} -225

This is the equation of a vertical parabola open upward (the leading coefficient is positive)

The vertex represent a minimum

The vertex is the point (0,-225)

The axis of symmetry is x=0 (y-axis)

Find the x-intercepts (values of x when the value of y is equal to zero)

For y=0

0=x^{2} -225\\x^2=225

square root both sides

x=\pm15

therefore

The graph has zeroes at x = 15 an x = -15 and it opens upward.

3 0
3 years ago
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