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mr_godi [17]
3 years ago
13

Solve for x. -1/2 (x+5)=2x -3/2

Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
4 0

Start from

-\dfrac{1}{2}(x+5)=2x -\dfrac{3}{2}

It may be useful to multiply the whole expression by 2, in order to get rid of denominators:

-(x+5)=4x -3

Distribute the negative sign in the left hand side:

-x-5=4x -3

Move all terms involving x to the left, and all constants to the right:

-x-4x=-3+5

Sum like terms:

-5x=2

DIvide both sides -5:

x = -\dfrac{2}{5}

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The correct scientific notation for the number 500.0 is
marishachu [46]

Answer:

The correct scientific notation for the number 500.0 is 500=5.0\times10^2

Step-by-step explanation:

While writing a large number in scientific notation we do below mentioned two things.

  • We take any number between 1 and 10
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Hence, any number in scientific notation is in the form a\times10^b

Here a is any number between 1 and 10.

b is exponent of 10.

Now, writing 500 in scientific notation, we take a = 5

Hence, we have to take b = 2, since 5 multiplied by 100 equas 500.

Thus, we have

500=5.0\times10^2

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