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3 years ago

Worksheet

Mathematics

1 answer:

Y_Kistochka [10]3 years ago

7 0

Answer:

45/47

Step-by-step explanation:

The entire tank will hold 47 litres, but it contains only 45 of those. The fraction is "45 out of 47" -- 45/47.

That does not simplify because 45 and 47 have no factors in common other than 1.

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Nine years ago, a woman was three times as old as her son. In eight years from now, the sum of

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Answer:

she would would be about 61 years and her son about 20 years

Step-by-step explanation:

78-9=69

70-8=61

61/3=20.3

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3 years ago

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Answer:

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3 years ago

A town has a population of 8000 in Groves at 4.5% every year to the nearest year how long will it be until the population will r

VashaNatasha [74]

Answer:

It takes 10 years approximately for the population to reach 22,500

Step-by-step explanation:

Given:

Initial population = 8000

Population growth rate 4.5 %

Future population = 22500

To Find:

Time taken to reach a population of 22500

Solution:

The population growth can be identified by using

$N = N_0e^{(rt)}$

where

N is future popluation

$N_0$ is the initial population

t is the time taken

r is the rate of the growth

Here we have to find the time t, rephrasing the formula

$log(\frac{N}{N_0}) = rt$

$\frac{log(\frac{N}{N_0})}{r} = t$

Substituting the values we get,

$t = \frac{log(\frac{22,500}{ 8000})}{ 0.045}$

$t = \frac{log(2.8125)}{ 0.045}$

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t = 9.97

t=10(approx)

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4 years ago

X4(1-x)+3=-2x-2 what the answer?

Oliga [24]

Answer:

x=9/2

Step-by-step explanation:

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