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3 years ago

What are the ordered pairs

Mathematics

1 answer:

neonofarm [45]3 years ago

6 0

As there is no other info given .

So we can choose any two ordered pairs whose mid point will come out to be (4,-10)

So we can one subtract a number from either x or y , and correspondingly add the same number to same variable again.

for example

we can add 2 to x and subtract 2 from x

So we get two ordered pairs as

(4-2 , -10) , (4+2, -10)

(2,-10) and (6,-10)

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Solve for x. 2/5 x = 6/5

Alexxandr [17]

Answer: 15/5 or 3

Step-by-step explanation:

2/5x =6/5

1/5x = 3/5

5/5x = 15/5 or 3

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3 years ago

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The graph of a function f(x) is shown below: plot ordered pairs negative 1, negative 3 and 0, 1 and 1, 2.2 and 2, 3

JulijaS [17]

we have the points

$A(-1,-3)\\B(0,1)\\C(1,2.2)\\D(2,3)$

Using a graphing tool

see the attached figure

the domain is the interval---------> $[-1,2]$

$-1 \leq x\leq 2$

the range is the interval--------> $[-3,3]$

$-3 \leq y\leq 3$

therefore

the answer is the option D

integers from $-1 \leq x\leq 2$

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3 years ago

8-35. Use your knowledge of polygons to answer the questions below, if possible.

Nataliya [291]

Answer:

(a)I. 13 Sides II. 7 Sides

(b) 4 Sides, Square

(c)x=52 degrees

(d)x=107 degrees

(e)1620 degrees

Step-by-step explanation:

(a)The Sum of the Interior angle of polygon with n sides is derived using the formula: (n-2)180.

I. If the Interior angle is $1980^0$

Then:

$(n-2)180^0=1980^0\\$Divide both sides by 180^0 $ to isolate n$\\n-2=11\\$Add 2 to both sides of the equation\\n-2+2=11+2\\n=13$

The polygon has 13 sides.

II. If the Interior angle is $900^0$

Then:

$(n-2)180^0=900^0\\$Divide both sides by 180^0 $ to isolate n$\\n-2=5\\$Add 2 to both sides of the equation\\n-2+2=5+2\\n=7$

The polygon has 7 sides.

(b)The sum of the exterior angle of a polygon is 360 degrees,

Each exterior angle of a n-sided regular polygon is: $\frac{360^0}{n}$

If the exterior angle of a regular polygon is 90°

Then:

$90\°=\frac{360^0}{n}\\ 90n=360\\n=4$

The regular polygon has 4 sides and it is called a Square.

(c)The Sum of the Interior angle of polygon with n sides is derived using the formula: (n-2)180.

Each Interior angle of a regular n-sided polygon is: $\frac{(n-2)180^0}{n}$

For a pentagon, n=5

Then:

$\frac{(5-2)180^0}{5}=2x+4\\108=2x+4\\108-4=2x\\104=2x\\x=52^0$

(d)The sum of the exterior angle of a polygon is 360 degrees.

If four of the exterior angles of a pentagon are 57, 74, 56, and 66.

Let the fifth angle=x

Then:

$57+74+56+66+x=360^0\\253+x=360\\x=107^0$

(e)The Sum of the Interior angle of polygon with n sides is derived using the formula: (n-2)180.

In an 11-gon., n=11

Therefore, the sum of the interior angle=(11-2)180= $1620^0$

The sum of the interior angle does not change either in a regular or irregular polygon.

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3 years ago

Which expression is equivilent to 3x/x+1 divided by x+1?

Sveta_85 [38]

Step-by-step explanation:

$\frac{3x}{x + 1} \div (x + 1) \\ \\ = \frac{3x}{x + 1} \times \frac{1}{(x + 1) } \\ \\ = \frac{3x}{ {(x + 1)}^{2} }$

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4 years ago

(4-21)(1 + 71) help plz

Alex Ar [27]

the answer would be -1,224 because the parentheses is your multiplication and the it is a negative

8 0

3 years ago

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