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adelina 88 [10]
3 years ago
12

Each side of a square is x meters long. Each side of the square is increased by 10%.

Mathematics
2 answers:
postnew [5]3 years ago
6 0
Increase by 10% is time 1.10

so

area=side^2
sidenew=1.1x
so


(1.1x)^2=44 is equation
san4es73 [151]3 years ago
4 0
4x = 39.6 would be the equation
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Please answer this correctly
marusya05 [52]

Answer:

662

Step-by-step explanation:

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4 0
3 years ago
A person invests $2,740 in an account that earns 4.3% annual interest. Find when the value of the investment reaches $7,000. If
Juli2301 [7.4K]

So, to set up your equation is the hardest part. If you remember the basic format, you're set.

I(t) = P * (1+r%)^t

t= time and this will be our variable

Initial amount P = $2740

Rate = 4.3% which converts numerically into .043

I(t) = 7000

Before we get to find out how to find how many years it takes to get to $7000, set up the basic equation by plugging in what we know.


I(t) = $2740(1+4.3%)^t

I(t)=2740(1.043)^t

Now plug in for $7000 for I(t)

7000=2740(1.043)^t                 Divide both sides by 2740

7000/2740 = 2740/2740(1.043)^t

2.55474453=(1.043)^t

Now you can solve for t in two ways. You can either use the natural log or graph it on your graphing calculate and see when the two equations meet.

In your calculator you can set up:

ln(2.55474453)/ln(1.043) = t                 which is the method I prefer since it's much simpler

t=22.278528

but you can also graph it in your ti-84

with

y1=2.55474453

y2=(1.043)^x

and find where they intersect on the graph.

either way it'll be the same answer

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3 years ago
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Vikki [24]

Answer:

answer is D

Step-by-step explanation:

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