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lutik1710 [3]
3 years ago
14

Please help, What (x+y)(x-y)

Mathematics
2 answers:
ollegr [7]3 years ago
8 0

Answer:

x^{2}-y^{2}

Step-by-step explanation:

(x+y)(x-y)

Use Foil

x(x-y)=x^{2}-xy

y(x-y)=xy-y^{2}

Combine

x^{2}-xy+xy-y^{2}

-xy and xy cancel each other out so our final answer is

x^{2}-y^{2}

JulijaS [17]3 years ago
5 0

Answer:

x^2-y^2

Step-by-step explanation:

positive x * positive x = x^2

positive y * negative y = -y^2

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Any help would be appreciated
Dmitry [639]

Answer:

y-2=2(x-1)

Step-by-step explanation:

Pick any two points from the line (example: (1,2) and (2,4))

Find the slope of them

Reminder: Slope is changes in y/changes in x or y2-y1/x2-x1

In this case, m= 4-2/2-1 which is 2

Now to use slope point form, chose any point and substitute it into this equation:

y-y1=m(x-x1)

Substituting it would get

y-2=2(x-1)

Or

y-4=2(x-2)

5 0
3 years ago
What is the answer to this
guapka [62]
Alright, first blank one is 1/3, then 2/3, then 1, then 1 1/3, then 1 2/3.
Now, shade the 1/3 and 2/3 in blue.     Shade the 0, 1 and 2 in red.     
Shade the 1 1/3 and 1 2/3 in yellow.
Glad I could help, and good luck!
7 0
3 years ago
Read 2 more answers
Allyson measures her plant every year. It's now 16 years old and it measures 12 inches. What is the unit
tensa zangetsu [6.8K]

Answer:

3/4 inch per year

Step-by-step explanation:

A <em>unit </em>rate is the change in some quantity per <em>one</em> of another quantity. One common unit rate is <em>miles per hour</em>, which measure the number of miles traveled in <em>one hour</em>. Here, we're asked for the unit rate of plant growth per year, and we're told that at 16 years old, the plant measures 12 inches. Assuming this growth is <em>linear</em> (that is, it grows by the same amount each year), we can divide each quantity by the number of years (16) to find a unit rate of 12/16 = 3/4 inch per year.

5 0
3 years ago
The measure of an exterior angle of a regular polygon is 2x, and the measure of an interior angle is 4x. Using the relationship
torisob [31]

The value of x is 30

<u><em>Solution:</em></u>

Given that measure of exterior angle of regular polygon is 2x

The measure of interior angle is 4x

To find: value of x

The sum of an interior angle plus an exterior angle must be equal to 180 degrees (supplementary angles)

measure of exterior angle + measure of interior angle = 180

2x + 4x = 180

6x = 180

x = 30

<em><u>Finding the measure of an exterior angle</u></em>

measure of exterior angle = 2x = 2(30) = 60 degrees

<em><u>Finding the measure of interior angle</u></em>

measure of interior angle = 4x = 4(30) = 120 degrees

8 0
3 years ago
Find the values of x and y write your answers in simplest form.
slega [8]
X= 6
Y= 8.5
I used Tan to find X and Cos to find Y
7 0
3 years ago
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