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suter [353]
3 years ago
8

Helpppp ! expand and simplify (x+y) (x+y)

Mathematics
2 answers:
DaniilM [7]3 years ago
4 0

Answer:

Step-by-step explanation:

(x+y) (x+y)

=x^2+xy+yx+y^2

=x^2+2xy+y^2

Hope it helps

pls mark as Brainliest

VLD [36.1K]3 years ago
3 0
(x+y)(x+y)
= x*x +xy +yx + y*y
= x^2 + 2xy + y^2
Hope can help you
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G a survey of property owners' opinions about a street-widening project was taken to determine if owners' opinions were related
Naily [24]

Answer:

The expected frequency for people against the project and who have over 120 feet of property foot frontage is 3.9.

Step-by-step explanation:

The data provided is:

                                                   Opinion    

Front Footage   For       Undecided Against    Total

Under 45 feet    12                4              4              20

  45-120 feet           35                5             30      70

Over 120 feet     3                2              5              10

       Total           50                11             39    100

The formula to compute the expected frequency is:

E(X)=\frac{\text{Row Total}\times \text{Column Total}}{\text{TOTAL}}

Compute the expected frequency for people against the project and who have over 120 feet of property foot frontage as follows:

E(X)=\frac{\text{Row Total}\times \text{Column Total}}{\text{TOTAL}}

E(5)=\frac{10\times 39}{100}=\frac{39}{10}=3.9

Thus, the expected frequency for people against the project and who have over 120 feet of property foot frontage is 3.9.

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3 years ago
46. Five people L, M, n, O and P sit in a row, not necessarily in the same order.
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Half the perimeter is the length + the width

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Answer: 20 meters x 11 meters

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3 years ago
What is 7
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Answer:17

Step-by-step explanation:17 (seventeen) is the natural number following 16 and preceding 18. It is a prime number. Seventeen is the sum of the first four prime numbers.

3 0
3 years ago
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