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Anit [1.1K]
3 years ago
11

Ishaan is 2 times as older as Chris. 35 years ago, ishaan was 7 times as old as Chris. How old is Chris?

Mathematics
1 answer:
den301095 [7]3 years ago
4 0

Answer

42

Step-by-step explanation:

Let x be Chris's age before, x+35 be Chris's age now.

2(x+35) = 35+7x

2x+70 = 35 +7x

35=5x

7=x

7+35=42

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Answer:

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3 years ago
Prove that (4n+1)^2(4n-1)^2 is a multiple of 8 for all integers of n.<br><br> thanks.
azamat

Answer: i think  (4n+1)^2(4n-1)^2 isnt a multiple of 8 for all integers of n because:

(4n + 1)²(4n - 1)²

= [(4n + 1)(4n - 1)]²

= (16n² - 1)²

= 16².n².n² - 2.16.n² + 1

= 8n²(32n² - 4) + 1

can see 8n²(32n² - 4) is a multiple of 8 but 1 isnt a multiple of 8

=> (4n + 1)²(4n - 1)² isnt a multiple of 8 for all integers of n.

Step-by-step explanation:

6 0
3 years ago
Examine the system of equations.
11Alexandr11 [23.1K]
<h3><u>Explanation</u></h3>
  • Given the system of equations.

y =  -  \frac{1}{4} x - 2  \\ x = 4

  • Substitute x = 4 in the first equation.

y =  -  \frac{1}{4} (4) - 2 \\ y =  - 1 - 2  \\ y =  - 3

We have both x and y values. Therefore, we can answer in coordinate point form.

<h3><u>Answer</u></h3>

<u>\large \boxed{(4, - 3)}</u>

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Step-by-step explanation:

It is given that,

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To make the relationship proportional, he must start with zero balance and then should have deposited $20 every month.

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3 years ago
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