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4 years ago

What is the value of n in the equation 1/2(n-1) - 3 = 3 - (2n + 3)?

Mathematics

1 answer:

natulia [17]4 years ago

4 0

Hey there! :)

1/2(n - 1) - 3 = 3 - (2n + 3)

Simplify.

1/2n - 1/2 - 3 = 3 - 2n - 3

Add like terms.

1/2n - 3 1/2 = -2n

Add 3 1/2 to both sides.

1/2n = -2n + 3 1/2

Then, add 2n to both sides.

1/2n + 2n = 3 1/2

Simplify!

2 1/2n = 3 1/2

Make everything into improper fractions!

5/2n = 7/2

Multiply everything by 2 to get rid of the denominators.

5/2n × 2 = 7/2 × 2

Simplify!

5n = 7

Divide both sides by 5.

n = 7/5

Hope this helped! :)

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Please help me thank you.

Georgia [21]

Question 1:

The answer is angle 4.

Just imagine that both line m and line l are the same line.

Then, just find out which angle matches with what. Angle 1 matches with angle 5. Angle 2 matches with angle 6, and so on.

Thus, angle 8 will match with angle 4.

Question 2:

From what I said about angle 2 and 6 last question, we know that angle 2 and 5 cannot be corresponding.

The answer is alternate interior angles because angles 2 and 5 match the definition for alternate interior angles.

They are not same side interior because then angle 4 would match with angle 2.

They are not alternate exterior because angle 2 and angle 5 are not above line l and below line m (exterior angles).

Have an awesome day! :)

5 0

3 years ago

What is the answer, please help!

vredina [299]

Answer:

31.14 i believe

Step-by-step explanation:

7 times 4 is 28

and 28 plus 3.14 = 31.14

31.14 rounded to the nearest hundredth is still 31.14 because there is nothing after the hundredths

7 0

3 years ago

Drag and drop each expression into the box to correctly classify it as having a positive or negative product

AfilCa [17]

Following expressions will have negative product

$(\frac{1}{2})(-\frac{1}{2})\ and\ (-\frac{1}{2})(\frac{1}{2})$

Following expressions will have positive product

$(-\frac{1}{2})(-\frac{1}{2})\ and\ (\frac{1}{2})(\frac{1}{2})$

Further explanation:

We will see at each expression one by one

First expression is:

$(-\frac{1}{2})(\frac{1}{2})$

In the given expression one term is positive and one term is negative. The product of negative and positive terms is negative.

Second Expression is:

$(-\frac{1}{2})(-\frac{1}{2})$

Both terms are negative and the product of two negative terms is positive.

Third Expression is:

$(\frac{1}{2})(-\frac{1}{2})$

The expression has one positive and one negative term so the product will be negative

Fourth Expression is:

$(\frac{1}{2})(\frac{1}{2})$

Both terms are positive so the product will also be positive

Keywords: Product, Expressions

Learn more about expressions at:

#LearnwithBrainly

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4 years ago

Answer number 4 for slope puzzle

Norma-Jean [14]

Can you give me a picture to see it

7 0

3 years ago

Do these ratios form a proportion?

telo118 [61]

Answer:

No, because both of them will never be able to match; become equivalent. You would have to multiply 2 different numbers to make them match, meaning they would not be proportional. For a comparison to be proportional, the ratio you are trying to simplify to must be achieved by multiplying 2 numbers from the previous ratio by one LCD.

$\frac{3\cdot 4}{7 \cdot 3} = \frac{12}{21}$

They are<em> able</em> to make 12/21, but that does not mean they are proportional.

6 0

2 years ago