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Komok [63]
3 years ago
5

if A= (-1, -3) and B= (11, -8) what is the length of AB A) 14 units B) 11 units C) 13 units D) 12 units

Mathematics
1 answer:
Anastasy [175]3 years ago
5 0
Distance is the formula : 

DAB = \sqrt{(xA - xB)^2  + (yA - yB)^2}
 
so 

\sqrt{(-1 - 11)^2 + (-3 + 8)^2}

= 13 

Answer is C)


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find the present value of an investment that is worth $19,513.75 after earning 3percent simple interest for 5.5 years
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Answer:

present value = $16750

Step-by-step explanation:

The simple interest formula allows us to calculate A, which is the final amount. According to this formula, the amount is given by A = P (1 + r*t), where P is the principal, r is the annual interest rate in decimal form, and t is the loan period expressed in years

simple interest formula:

t: time

P: present value

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r : anual interest

A = P (1 + r*t)

P = A / (1 + r*t)

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3 years ago
3. At the start of summer, Ben has $250 . He takes a summer
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Answer:

Week 4

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Ben has $250 in the beginning.  He saves $150 per week.

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Tim has $1,650 in the beginning.  He spends $200 per week.

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We are trying to find which x-value produces the same y-value for both equations.  You can do this by setting both equations equal to each other.

150x + 250 = 1650 - 200x

(150x + 250) + 200x = (1650 - 200x) + 200x

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(350x)/350 = (1400)/350

x = 4

By week 4, they will have the same amount of money.

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