josiahthompson712 josiahthompson712
  • 10-11-2020
  • Mathematics
contestada

Carolyn was asked to solve the following system of equations. Her work is shown.

What error did Carolyn make? Identify her mistake and explain the error.

Carolyn was asked to solve the following system of equations Her work is shown What error did Carolyn make Identify her mistake and explain the error class=

Respuesta :

musiclover10045
musiclover10045 musiclover10045
  • 10-11-2020

The mistake is on the second line of her work.

She wrote -2x + 4 when it should have been -2x -4 because she multiplied -2 by 2 the 4 would be negative: -2 x 2 = -4

Then adding 4 to the 7, x would be 11

Answer Link
camasosooshshskai camasosooshshskai
  • 17-11-2020

Answer: She’s wrong because on the second line, she should’ve put -2x-4 instead of -2x+4 . X equals 11 because if you add 4 to 7 that’s what you’ll get ,

Step-by-step explanation:

Answer Link

Otras preguntas

please solve: 1/a+1/2=2/a
What is unique about Pluto's orbit around the sun? revolves opposite to all other planets inclined more than other planets most circular orbit most elliptical
4y=x+4 X=y+2 Is there a solution
What is the unit rate if there are 1,760 calories in 8 servings
what is benvolios attitude towards love
write the percent as a fraction or mixed number in simplest form.
what were Roosevelt's most important foreign policy initiatives in Latin America
am - d = b solve for me
Which statement best illustrates the function of RNA in relation to DNA and proteins? A. RNA makes DNA, which then creates proteins. B. Proteins
A zoo has 15 emperor penguins. who make up 30% of the total numbers of penguins at the zoo. How many penguins live at the zoo?