Tanyam01 Tanyam01

25-02-2016
Mathematics

contestada

Seven times a number is equal to 9 more than 4 times the number. find the number

Respuesta :

apologiabiology apologiabiology

25-02-2016

represent 'a number' by x
7 times x equals 9 more than 4 times x
7 times x=9+4 times x
7x=9+4x
subtract 4x from both sides
3x=9
divide 3
x=3

the number is 3

Answer Link

Otras preguntas

True or False. The splitting of an ATP molecule (energy release: ATP - ADP + P + energy ) requires O2.

Gene mutations can be passed on to future generations and drive natural selection. Choose the best description of how gene mutations are involved in evolution

A box has 14 camera of which 6 are refurbished and 8 are new. If four of these 14 cameras are selected at random without replacement, what is the probability th

Which is the best way to assess the credibility of a source? A) from determining how other people feel about it B) from determining whether or not it sounds "u

The volume of water flowing through a pipe varies directly wlth the square of the radius of the pipe. If the water flows at a rate of 80 liters per minute throu

What is a function library?

Can i get someone’s help ? !

Which sentence is punctuated correctly? The shoes normally cost 40 dollars however we got them on sale. The shoes normally cost 40 dollars, however; we go

For two functions, a(x) and b(x), a statement is made that a(x) = b(x) at x = 2. What is definitely true about x = 2? Both a(x) and (x) have a maximum or minimu

Which of the following is a characteristic of protein synthesis in prokaryotes?