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tigry1 [53]
1 year ago
9

Number 13. Multiply please.

Mathematics
1 answer:
Dafna11 [192]1 year ago
8 0

(x-y)^2 \\\\\\= (x-y)(x-y)\\\\= x * x + (x)(-y)+(-y)(x) +(-y)(-y)\\\\ = x^2 -xy-xy + y^2\\\\=x^2-2xy + y^2

Hope that helps!

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Which is the graph of -5h + 3 < -7?
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Answer:

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What is the best estimate for the product of 289 and 7
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~~~~~~~~~~ 
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What is the area of a cirlcle that's 4cm ​
Elena-2011 [213]
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3 years ago
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3 0
3 years ago
Read 2 more answers
Tom is making a rectangular garden. he decides to make the garden 30 ft long by 15 ft wide. Later, tom decides to keep the lengt
OleMash [197]

Yes.  Changing the the word problem into a function, you get 30x=y.

30 = Fixed Length

x = width

y = area

No matter what width (x) you choose, the area (y) is going to be a multiple of 30 (the fixed length) because with two numbers being multiplied, if there is a fixed number that will always be the multiple and not the multiplier.  For example, 10 multiplied by every number 1-10 is going to be a multiple of 10.

10x1=10, 10x2=20, 10x3=30, etc

So if Tom chooses any of these widths (x) 5, 10, or 15, y (the area) will be a multiple of 30.

30(5)=150

30(10)=300

30(15)=450

So as we double 5 to get 10, our outcome is doubled 150 to 300 and so forth.  Hope this helps.

7 0
3 years ago
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