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Kay [80]
3 years ago
6

A5. a) If (x - y) = 2 and xy = 3 Find the value of x + y​

Mathematics
1 answer:
Sonja [21]3 years ago
8 0

Answer:

4, x=3, y=1

Step-by-step explanation:

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Find a5, when a1 =4, r=5
sasho [114]

Answer:

Answer: a5 = 2500

Step-by-step explanation:

For a geometric sequence:  

First term = a0  

Second term = a1 = a0*r  

Third term = a2 = a0*r^2  

Fourth term = a3 = a0*r^3  

....  

nth term = a(n-1) = a0*r^(n-1)  

Given: a1 = 4 = a0*r  

Also: r = 5  

So, a0*5 = 4 => a0 = (4/5)  

a5 = a(6-1) = Sixth term = a0*r^5 = (4/5)*5^5 = 2500  


Hope this helps

correct me if im wrong☺


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4 years ago
What value of n makes the equation true?
goldenfox [79]

Answer:

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Step-by-step explanation:

You need n to be 10 because: y^20= (y^10)^2

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Step-by-step explanation:

Difference of two squares is breaking down numbers into pieces and using the distributive property to solve. The pieces should be in the form (a-b)(c+d).

Write 22 as (20 + 2) and 18 as (20-2).

(20+2)(20-2) = 400 + 40 - 40 - 4 = 400 - 4 = 396

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Step-by-step explanation:

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Please answer this question...
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Answer:It should be x=1 not sure thought.

Step-by-step explanation:

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