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podryga [215]
3 years ago
15

(X1+X2/2). (Y1 + Y2/2) what is this equation called. its 16 letters long plz help need for 10th grade semester finals.​

Mathematics
1 answer:
Degger [83]3 years ago
8 0

Answer:

midpoint equation

Step-by-step explanation:

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In this question, it is given that the diagonal of the board is 18 inches long and one side of the board is 12 inches long.

Let the other side is of length b inches .

Now we use pythagorean identity, which is

a^2 + b ^2 = c^2

Here, a = 12 and c=18

Substituting these values, we will get

12^2 + b^2 = 18^2 \\ 144 + b ^2 = 324 \\ b^2 = 324-144 \\ b^2 = 180 \\ b= \sqrt{180} \\ b = 13.4164 inches

And the formula of perimeter is

Perimeter = 2(Sum\ of \ legs)

Substituting the values of the two legs, we will get

Perimeter = 2(12+13.4164) = 50.83 inches


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How do you turn 245/360 into a decimal
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68.06%;

Step-by-step explanation:

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What is 59424.77 rounded to the nearest square mile
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59,424.77 rounded to the nearest square mile is 59,425.
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How many years will it take for the account to reach $18,600? Round your answer to the nearest hundredth
Margarita [4]
 <span>it depends how the interest is calculated, but there's not much of a difference 

assuming its continuously compouned, you use this formula: A(t)=Pe^(rt), where A is the final amount, P is the initial investment, r is the interest, and t is the time in years 

you want to find t such that A(t)=18,600 so 18,600=1000e^(.0675t) 

you need to use logarithm to figure it out, take the natural log of both sides 

the following properties will come into use: 

ln(a*b)=ln(a)+ln(b) 
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taking the natural log 

ln(18,600)=ln(1000e^(.0675t)) 

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ln(18600)=ln(1000) + .0675t 

now solve for t: t= (ln(18600)-ln(1000))/.0675 

t=43.31</span>
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3 years ago
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