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3 years ago

Which point represents the value of -(-2) on the number line

Mathematics

2 answers:

Nata [24]3 years ago

6 0

Answer:

the answer should be c Point C

Step-by-step explanation:

Anvisha [2.4K]3 years ago

5 0

Answer:

Point C.

Step-by-step explanation:

We are given that a number

-(-2)

We have to find the point that represents the value of -(-2) on the number line

We have a figure in which point A, B,C and D are represented .The point A is represents (-4) , B represents (-2), C represents positive 2 and D represents positive 4.

When we have (-2) and negative sign

It means we have to multiply (-2) with negative sign

We know that when we multiply a negative number with negative sign then the value of a negative number should be positive.

Therefore, When we multiply (-2) and negative sign then we get the value is 2.

-(-2)=2

Therefore, the point C represent the value of -(-2).

Answer : Point C.

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2 years ago

PLEASE HELP/ANSWER! From 1980 to 1990, Lior’s weight increased by 25%. If his weight was k kilograms in 1990, what was it in 198

Elena-2011 [213]

The weight in 1980 is $\frac{4k}{5}$ kilograms

Solution:

From 1980 to 1990, Lior’s weight increased by 25%

His weight is "k" kilograms in 1990

To find: weight in 1980

This is a percentage increase problem

Let "x" be the weight in kilograms in 1980

The percentage increase is given by formula:

$\text{Percentage increase } = \frac{\text{Final value - initial value}}{\text{initial value}} \times 100$

Here,

Initial value in 1980 = x

Final value in 1990 = k

Percentage increase = 25 %

Substituting the values in formula,

$25 = \frac{k-x}{x} \times 100\\\\25x = 100(k-x)\\\\x = 4(k-x)\\\\x = 4k - 4x\\\\5x = 4k\\\\x = \frac{4k}{5}$

Thus the weight in kilograms in 1980 is $\frac{4k}{5}$

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3 years ago

What is an equation of the line that passes through the point (−1,6) and is parallel to the line 2x+y=9

Alex73 [517]

Answer:

2x + y = 4

Step-by-step explanation:

2x + y = 9 => y = -2x + 9

Parallel lines have the same slope so m = -2

Given (-1,6)

y = mx + b

6 = -2(-1) + b

6 = 2 + b

b = 4

so y = -2x + 4 or 2x + y = 4

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2 years ago

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noname [10]

Step-by-step explanation:

oyasumi..................

3 0

3 years ago

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