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kondor19780726 [428]
4 years ago
9

2.

Mathematics
1 answer:
Sidana [21]4 years ago
5 0
Present Value: P=?
Amount per Payment at the end of each year: A=$1,000
Number of years: n=8
Interest rate: i=6%=6/100→i=0.06
Compounded Annually

P=A{[1-(1+i)^(-n)]/i}
P=$1,000{[1-(1+0.06)^(-8)]/0.06}
P=$1,000{[1-1.06^(-8)]/0.06}
P=$1,000[(1-0.627412371)/0.06]
P=$1,000(0.372587629/0.06)
P=$1,000(6.209793811)
P=$6,209.793810
P=$6,209.79

Answer: Present Value is $6,209.79
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Find parametric equations for the path of a particle that moves along the circle x2 + (y − 3)2 = 16 in the manner described. (en
sveticcg [70]

Answer:

x(t) = 4 cos(-t)\\y(t) = 4 sin(-t) + 3\\

and t ∈ [0,2π]

Step-by-step explanation:

The standard equation for circle is:

(x-h) ^2 + (y-k)^2 = r^2

Comparing our equation with standard

x^2 + (y-3)^2 =16

h= 0,

k= 3

r= 4 (as in standard r², so r =√ r²)

Required:

Parametric equations of the circle

Formula:

x = r cos(t) + h\\y= r cos(t) +k

Putting values of r and h and k we get

x= 4 cos(t) + 0 \\x= 4 cost(t) \\y= 4 sin(t) + 3

As we need to start the object at (4,3)

x(0) = 4 and y(0) = 3

and the period is 2π

As the rotation is starting clock wise we will invert the value of t i.e -t

x(t) = 4 cos(-t)\\y(t) = 4 sin(-t) + 3\\

and t ∈ [0,2π]

5 0
3 years ago
The Y axis is named first in a coordinate pair.<br> O True<br> False<br> Help pls
babymother [125]

Answer:

false

Step-by-step explanation:

4 0
3 years ago
1. Solve by factoring and using the zero product property. (Diamond &amp;<br> x2 – 2x – 15 = 0
Harlamova29_29 [7]

The factors are: x-5 and x+3

Step-by-step explanation:

Given

x^2-2x-15 = 0

Simplifying

x^2-5x+3x-15 = 0\\x(x-5) + 3(x-5) = 0\\(x+3)(x-5) = 0

Let us define the zero product property first

The zero product property states that

if ab=0 then either a=0 or b=0

So,

x+3 = 0\\x+3-3 = 0-3\\x = -3\\AND\\x-5 = 0\\x-5+5 = 0+5\\x = 5

Hence,

the factors are: x-5 and x+3

Keywords: Factorization, Zero product property

Learn more about factorization at:

  • brainly.com/question/10978510
  • brainly.com/question/11007026

#LearnwithBrainly

3 0
3 years ago
Please help !!!
77julia77 [94]
I think it might be C
3 0
3 years ago
Read 2 more answers
. Con la finalidad de conservar el medio ambiente una de las docentes del 2do grado solicita
emmasim [6.3K]

Respuesta: 12 estudiantes trajeron pilas

Solución:

Numero total de estudiantes: 30

Sea:

x: numero de estudiantes que trajeron pilas

y: numero de estudiantes que no trajeron pilas

x+y=30 (1)

La razón entre los estudiantes que trajeron pilas y los que no trajeron es como 2 es a 3:

Razón: r=x/y=2/3 (2)

Cuantos estudiantes trajeron pilas?

x=?

Tenemos un sistema de 2 ecuaciones con 2 incógnitas:

(1) x+y=30

(2) x/y=2/3

Vamos a resolver para x. Multiplicando en cruz en la segunda ecuación:

(2) 3x=2y

Depejando y: Dividiendo ambos lados de la ecuación entre 2:

3x/2=2y/2

3x/2=y

y=3x/2

Sustituyendo y por 3x/2 en la primera ecuación:

(1) x+y=30

x+3x/2=30

Sumando los términos en el lado izquierdo de la ecuación:

(2x+3x)/2=30

5x/2=30

Despejando x:

x=30*2/5

x=60/5

x=12

5 0
4 years ago
Read 2 more answers
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