3 years ago

Solve this clue: My age is 10 more than one-tenth of one-tenth of 3,000

1 answer:

7 0

Ten percent of 3000 is 300 ten percent of that is 30 add ten and it's 40

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scoundrel [369]

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Marrrta [24]

Complementary angle

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larisa86 [58]

£1=100p
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madam [21]

Answer:

Step-by-step explanation:

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leonid [27]

25 = 5*5 and 9 = 3*3, which we can exploit to write

$25^x-9^y=(5^2)^x-(3^2)^y=5^{2x}-3^{2y}=(5^x)^2-(3^y)^2$

so that this expression is actually a difference of squares. We can factorize this to get

$(5^x-3^y)(5^x+3^y)=18$

and given that $5^x-3^y=3$ , we divide both sides by this to get

$5^x+3^y=\dfrac{18}3=\boxed{6}$

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2 years ago