12edonoghue 12edonoghue

10-03-2017
Mathematics

contestada

Solve the simultaneous equations 7x+5y=32
3x+4y=23

Respuesta :

nick321 nick321

10-03-2017

3(7x+5y=32) and -7(3x+4y=23)
To make 21x+15=96 and -21x-28y=-161
Then add them to be -13y=-65
So y=-5
The substitute y
3x-20=23
3x=3
So x=1

Answer Link

Otras preguntas

The Chinese believed that family members were united forever through their... a.language. c. ideologies. b.education. d. dynasty.

If two terms of an arithmetic sequence are a11 = 23 and a15 = −5, what is a28?

what does hov stand for

excerpt from Walden economy. commonlitt assessment.

Complete the following paragraph about the temperance movement. One accomplishment of FDR's First 100 Days was the National Industrial Recovery Act, which grant

A person who is thinking critically might ask: why something happened. how something happened. what the consequences of an event are. All of these choices

the term ""gangsta rap"" held no varying definition than regular ""rap."" it was solely a title created by concerned parents to justifiably shun the style.

!!SOMEBODY PLEASE HELP ME OUT!!What is the slope of the line??

manpreet experiences high levels of anxiety about exposure to germs. as a result, he typically washes his hands more than 100 times a day. what is the clinical

Which of these could be a consequence of a mutation in one of an organism's sex cells? O A. The loss of the organism's ability to reproduce B. The disruption of

good job