victoria38baby victoria38baby

03-06-2018
Mathematics

contestada

the difference of a number and twice another number is 12. The sum of the two numbers is -27. What are the two numbers?

Respuesta :

altavistard altavistard

13-06-2018

Let the numbers be x and x. Then x-2y=12. Also, x+y= -27, so that x = -27 - y.

Subbing the 2nd equation into the first gives us -27 - y - 2y = 12, or

-39=3y, or y = -13 (answer). Now find x from x = -27 - y.

Answer Link

Otras preguntas

Which of these is the basic unit of mass? a. L b. kg c. cm d. mL

In a sample of 75 randomly selected students at school, 32 are female. There are 1, 371 students in the school. Using these results, predict the number of fema

Dylan’s essential (fixed) expenses are $900 per month, his essential (flexible) expenses are $400 per month, and his non-essential expenses are $295 per month.

Solve for x. Show all steps: 1/5x+1/4x=1/2x+2 Simplify. -2/5(15x-20y+5) BTW how do you add pictures?

What is 123.5 as a fraction?

What was the Demascus Protocol?

This man seized power when President Paul von Hindenburg died. Stalin Hitler Mussolini Chamberlain

In modern times, do you think Americans have gained/maintained liberty in the way the Founding Fathers described it in the Constitution? Why or why not?

A globe is more accurate than a map because a globe can show _____.

I do not want to _______ a feud, said the duke. [L.11-12.2.b] a. instegate b. instigate c. instagate d. instaegate