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vladimir2022 [97]
2 years ago
9

If (2x,3y) =(8, 9),find x and y​

Mathematics
1 answer:
solong [7]2 years ago
5 0

Answer:

x = 4, y = 3

Step-by-step explanation:

Equating corresponding coordinates , gives

2x = 8 ( divide both sides by 2 )

x = 4

and

3y = 9 ( divide both sides by 3 )

y = 3

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The population of a colony of mosquitoes obeys the law of uninhibited growth. If there are 1000 mosquitoes initially and there a
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Answer:

24761 mosquitoes

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Step-by-step explanation:

Let the equation that shows the population of the mosquitoes after x days,

A=P(1+r)^x

Where,

P = Initial population,

r = rate of increasing per day,

Here, A = 1000, when x = 0,

1000=P(1+r)^0\implies P = 1000

A = 1900 when x = 1,

1900 = P(1+r)^1\implies 1900 = 1000(1+r)\implies 1.9 = 1 + r\implies r = 0.9

Thus, the required function that represents the population after x days,

A=1900(1+0.9)^x=1900(1.9)^x

If x = 4,

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A=1900(1.9)^4 = 24760.99\approx 24761

If A = 60,000,

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\frac{600}{19}=1.9^x

Taking log both sides,

\log(\frac{600}{19})=x\log 1.9

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6 0
3 years ago
70%of it is 14 min find the valy ofx
astra-53 [7]

<em>Note:</em>

<em>Your questions sound a little unclear.</em>

<em>But, I am assuming your questions as:</em>

<em>''70% of x is 14 min. Find the value of x''.</em>

<em>So, I will solve assuming this statement which anyways would clear your concept. </em>

Answer:

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Step-by-step explanation:

Given

<em>''70% of x is 14 min. Find the value of x''.</em>

Thus,

70% of x = 14

70/100 × x = 14

0.7x = 14

divide both sides by 0.7

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Therefore, we conclude that the value of x = 20.

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3 years ago
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Answer:

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Step-by-step explanation:

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2 years ago
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