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4 years ago

Solving systems by elimination 9x+3y=-3 2x-3y=-8

Mathematics

1 answer:

Alona [7]4 years ago

5 0

Answer:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

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Step-by-step explanation:

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Solve 9 - c = 17d for c

k0ka [10]

Answer:

c = 9 - 17d

Step-by-step explanation:

9-c = 17d

9-c+c= 17d + c (add c to both sides)

9 = 17d + c (Simplify)

9 - 17d = 17d - 17d + c (subtract 17d from both sides)

9 - 17d = c (Simplify)

5 0

3 years ago

Read 2 more answers

suppose the population of a town is growing exponentially. the population was 4,636 in 2008 and grew to 5,508 in 2018. what is t

Sloan [31]

Step-by-step explanation:

The standard equation used to model a exponential growth is given by $f(t)=Ae^{Bt}$

Given two data points, which are both explicitly a function of time, it is easy to solve the two equations,

$4636=Ae^{2008B} ,5508=Ae^{2018B}$

Dividing the second equation by the first,

$\frac{5508}{4636}=\frac{Ae^{2018B} }{Ae^{2008B} }$

$e^{10B}=\frac{5508}{4636}$

$10B=ln(\frac{5508}{4636} )=0.17235$

$B=0.017235$

Substituting in first equation, $A=4.32645\textrm{x}10^{-12}$

Growth model : $f(t)=(4.3265\textrm{x}10^{-12} )e^{0.017235t}$

Growth rate= $ABe^{Bt}$ = $94.93$

∴Approximate growth rate as of 2018 = 95

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3 years ago

Find the 46th term 10,17,24

notsponge [240]

Answer:

325

Step-by-step explanation:

Notice you are adding 7 everytime.

So the sequence would be:

a(n) = 10 + 7n

n=0 gives a(0)=10, which is the first term.

so the 46th term has n=45.

a(45)=10 + 7*45=325

6 0

3 years ago

Read 2 more answers

Find the value of x =

Maksim231197 [3]

Line TU is 2 times OL, so 2(2x-14) = x+2.
4x-28 = x + 2
4x=x+30
3x=30
x=10

4 0

3 years ago

Can someone help me with this question thanks! : )

Alexxx [7]

Answer:

C) $x^7-x^6+2x^5-3x^4+4x^3+6x-3$

Step-by-step explanation:

$x^3+2x-1(x^4-x^3+3)\\x^7-x^6+3x^3+2x^5-2x^4+6x-x^4+x^3-3\\x^7-x^6+2x^5-3x^4+4x^3+6x-3$

6 0

3 years ago