3 years ago

What is a mathmatical expression? give an example

1 answer:

5 0

Answer:

In algebra, we begin to see variables or letters that are used to represent numbers. An example of a mathematical expression with a variable is 2x + 3. In the expression 2x + 3, the coefficient of x is number 2, and it means 2 times x plus 3.

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A railroad crossing sign has a diameter of 30 inches. what is the area of the sign?

Anna007 [38]

Answer:

706.5m^2

Step-by-step explanation:

The sign is a circle

Area of a circle is (pi)r^2

d = 30 in -> r = d/2 = 30/2 = 15

Area = 3.14 x (15)^2 = 706.5m^2

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2 years ago

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Ymorist [56]

Answer:

Is this

Step-by-step explanation:

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What is the coefficient of x in 4x/5 a)1/5 b.5 c.4/5 d.4 e.-0.8

almond37 [142]

Answer:

$\frac{4}{5}$

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3 years ago

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Solve the equation a=m-n for the variable n

Bogdan [553]

Answer:

m-a = n

Step-by-step explanation:

a=m-n

Subtract m from each side

a-m = m-n-m

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7 0

2 years ago

All right guys help me out a little bit no jokes this is worth 13 points I need help with 432 / 73

Vesna [10]

Answer:

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Step-by-step explanation:

432/73 is the same as 432 ÷73=5.91780821918

Hope this helps ∞<3

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