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Xelga [282]
3 years ago
7

How do you get 40y from the difference of 2 squares with the problem (5y+4+3x)(5y+4-3x)? I understand distribution method. I don

't know where the 40y comes from using the special product method.
Mathematics
1 answer:
otez555 [7]3 years ago
3 0

Answer:

Step-by-step explanation:

(5y+4+3x)(5y+4-3x) = (5y+4)² - (3x)²......(from the difference of 2 squares )

by identity : (a+b)(a-b) = a² - b²

in this exercice ; a = 5y+4 and b  = 3x

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NO.4:X=38

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Use the distributive property to rewrite the algebraic expression.<br> 3(x + 7)
Oksana_A [137]
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Larger two degit number is --------
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99

Step-by-step explanation:

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telo118 [61]

Answer:

!. Scale factor = 5

2. Scale factor = \frac{1}{5}

Step-by-step explanation:

scale = \frac{length in drawing}{actual length}

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0.05 x 5 = 0.25

\frac{1}{2} x 5 = 0.5 x 5 = 2.50

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0.05 x \frac{1}{5} = 0.01

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6 0
3 years ago
Premises: All good students are good readers. Some math students are good students. Conclusion: Some math students are good read
just olya [345]

Answer:

Therefore, the conclusion is valid.

The required diagram is shown below:

Step-by-step explanation:

Consider the provided statement.

Premises: All good students are good readers. Some math students are good students.

Conclusion: Some math students are good readers.

It is given that All good students are good readers, that means all good students are the subset of good readers.

Now, it is given that some math students are good students, that means there exist some math student who are good students as well as good reader.

Therefore, the conclusion is valid.

The required diagram is shown below:

3 0
3 years ago
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