3 years ago

Two-dimensional objects are measured

Mathematics

1 answer:

balandron [24]3 years ago

6 0

It’s either length or area.

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What is the following product 3/x^2 4/x^3??

Alborosie

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Answer:

12/x^5

Step-by-step explanation:

The fractions are multiplied in the usual way. The applicable rule of exponents is ...

(x^a)(x^b) = x^(a+b)

$\dfrac{3}{x^2}\cdot\dfrac{4}{x^3}=\dfrac{3\cdot4}{x^2\cdot x^3}=\dfrac{12}{x^{2+3}}=\boxed{\dfrac{12}{x^5}}$

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3 years ago

Evaluate the expression (2x + y) - z when x= 3, y = 4, z =5

Lapatulllka [165]

Answer:

Step-by-step explanation:

(2x + y) - z

Let x=3 y=4 and z=5

2*3 +4 -5

Multiply and divide first

6 +4 -5

Then add and subtract

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3 years ago

- Rachel earned $54.79 last week. Morgan earned $50.23. About how much more did Rachel earn?

katovenus [111]

Answer:

Step-by-step explanation:

4.56 $

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Todd buys 3 CDs at $16.99 each and a DVD that costs $24.99. He pays

VikaD [51]

Answer:

$24.04

Step-by-step explanation:

3 x $16.99 = $50.97

1 x $24.99 = $24.99

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3 years ago

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What is 2x+1+7x=-8? Could you show work, please?

eduard

Answer:

Step-by-step explanation:

2x + 1 + 7x= -8

~2x + 7x = 9x

9x + 1 = -8

move 1 to the other side

9x = -1 -8

9x = -9

divide

X = -1

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