isabella244 isabella244
  • 01-04-2019
  • Mathematics
contestada

Can someone pls help me out

Can someone pls help me out class=

Respuesta :

scribblesgalaxy
scribblesgalaxy scribblesgalaxy
  • 01-04-2019

Answer:

i think its .b.   sorry if im wrong

Step-by-step explanation:

Answer Link
wolf1728
wolf1728 wolf1728
  • 01-04-2019

Answer:

A) 5x -4y =1

B) 4x -2y = 8

Using Cramer's Rule of detrminants

a = 5 b = -4  e=1

c = 4 d = -2  f = 8

denominator = 5 * -2 -(4 *-4) = 6

x = 1 * -2 [-(8 *-4)] / denom = 30 / 6 = 5

y = 5 * 8 -(4 * 1) / denom = 36 / 6 = 6

Step-by-step explanation:

Answer Link

Otras preguntas

Susan invests twice as much money at 7.5% as she does at 6%. If her total interest after a year is $840 how much does she have invested at each rate?
There are 21 males in the algebra 1 class. If 75% is female, how many students are there in the class?
What fraction is closest to 3/4? 2/3 3/5 7/10 13/20 Show your working please
What phylum has animals with a central cavity and mouth;and most of them have tentacles?
Let E and F be independent events in a sample space S with Pr[E] = 0.4 and Pr[F] = 0.2. Find Pr[EUF] A.0.60 B.0.52 C.0.40 D.0.32 E.0.08
while your finger is still pushing the coin, there are four forces acting on the coin: what are they?
how can temperature can affect communication?
Jane watched one television program for 1/4 of an hour and then changed channels to watch another program for 20 min. Write an equation to describe the fraction
Prove the identity: cos(3x) + cos(x) = 2cos(2x)cos(x) I'm almost done with my homework, just got stuck on this one.
what does the surface area represent in a cell