xbolden0239 xbolden0239

19-02-2021
Mathematics

contestada

Solve the system of equations using elimination. SHOW WORK!!!!!!!!!!!!!

15q – 4r = 62
5q + 8r = 86

Respuesta :

mommylovesyou mommylovesyou

19-02-2021

q= 6

r= 7

work--

Multiply 1st column by -2:

-30q+8r=-124

5q+8r=86

Subtract 2nd column from the first column:

-35q= -210

Solve for q:

q=6

Subtract q=6 by any of the two equations, so:

-30q+8r=-124

-30*6+8r=-124

Solve for r:

r=7

Answer Link

zoeyy2005 zoeyy2005

19-02-2021

That person is correct! Good luck

Answer Link

Otras preguntas

Need help with 8,12!!!!!!!!

3 x 19 x 14 + 18 ÷ 2

The American colonists became more and more unhappy with British rule in the years leading up to the American Revolution. Which statement best explains this?

Hydrogen atom number 1 is known to be in the 4f state. Hydrogen atom number 2 is in the 5d state. Required: a. What is the energy of the atom? b. WHat is the m

Carper Company is considering a capital investment of $390,000 in additional productive facilities. The new machinery is expected to have useful life of 6 years

What is the vertex of the graph of f(x) = |x - 13|+ 11

Evaluate the line integral ∫CF⋅dr, where F(x,y,z)=−xi−2yj−zk and C is given by the vector function r(t)=⟨sint,cost,t⟩, 0≤t≤3π/2.

A toy uses a spring to shoot an arrow with a suction cup on the end. The toy shoots a 34.2 g arrow and gives it a speed of 5.50 m/s. If the efficiency of the to

HELP ME PLZZ asap I really need it

Question 5(Multiple Choice Worth 4 points) (02.01)A class has 9 boys and 15 girls. What is the ratio in simplest form that compares number of boys to total numb