Answer:
The answer would be 28,800
Step-by-step explanation:
Answer:
The product of (4 +5x)(4-5x) is 16 - 25x².
Step-by-step explanation:
To find: Product of (4 +5x)(4-5x) using suitable identities.
Identity used : a² - b² = (a+b)(a-b)
Solution:
(4 +5x)(4-5x)
= (4)² - (5x)².........(using identity a² - b² = (a+b)(a-b))
(Here, a = 4 and b = 5x)
= 16 - 25x²
The given question can be solved without the use of the identity
a² - b² = (a+b)(a-b) as well.
Alternative Solution (without use of identity)-
(4 +5x)(4-5x)
(As (a+b)(c+d) = a(c+d)+b(c+d) )
= 4(4-5x) + 5x(4-5x)
= 16 - 20x + 20x - 25x²
= 16 - 25x²
Hence, the product of (4 +5x)(4-5x) is 16 - 25x².
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https://brainly.in/question/18367523
Answer:
a
Step-by-step explanation:
I think that right so let me know if It is right
Answer:
You must observe the distances from the center of the dilation at point A to the other points B, C and D. The dilation image will be 1/3 of each of these distances. AB = 6, so A'B' = 2. AD = 9, so A'D' = 3.
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Answer:
40 times
Step-by-step explanation:
Number of known species of beetles: 4 × = 400,000
Number of known species of caddis flies: about = 10,000
To compare how many times more species of beetles there are than caddies flies, you could divide 400,000 by 10,000, which gives you 40.
Therefore, there are 40 times more of beetle species than caddies flies.
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