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charle [14.2K]
4 years ago
9

Jan borrowed $1200 at 11.5% interest for 3 months. How much does she have to repay under a single-payment plan?

Mathematics
1 answer:
vladimir2022 [97]4 years ago
3 0


First, convert percent to decimal:

11.5% = 0.115

Multiply by amount borrowed:

0.115*1200= 138

Multiply interest amount per month (138) by 3

138*3 =$414.00 interest 

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How many solutions does this linear system have? one solution: (0, 0) one solution: (1, –4) no solution infinite number of solut
Anna35 [415]

The system of equations has infinite solutions.

<h2>Given to us,</h2>
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<h3>Equation 2,</h3>

The value of y is already given in equation 1,

-12x-2y=-4

substituting the value of y in equation 2,

-12x-2(-6x+2)=-4\\-12x +12x-4=-4\\-12x+12x=-4+4\\0=0

The solution of the two equations is 0. Also, we can see that both the equations are in ratio.

Further, the image also shows that the line of the two equations are coinciding.

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Solve by completing the square p^2 +10p - 3 = 0
Mrac [35]

Solving p^2 +10p - 3 = 0 by completing the square method we get (p+5)^2-28=0

Step-by-step explanation:

We need to solve by completing the square method.

We are given: p^2 +10p - 3 = 0

The Completing square method is: (a+b)^2 = a^2+2ab+b^2

Solving:

p^2 +10p - 3 = 0\\For \,\,making\,\,perfect\,\,square\,\,we\,\,add\,\,and\,\,subtract\,\,(5)^2\\p^2+2(p)(5)^2+(5)^2-3-(5)^2=0\\(p+5)^2-3-25=0\\(p+5)^2-28=0

Solving p^2 +10p - 3 = 0 by completing the square method we get (p+5)^2-28=0

Keywords: completing the square method.

Learn more about completing the square method at:

  • brainly.com/question/1414350
  • brainly.com/question/5194236
  • brainly.com/question/7932185

#learnwithBrainly

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