kalawsBridge
kalawsBridge kalawsBridge
  • 11-10-2016
  • Mathematics
contestada

i am thinking of a number. when it is increasd by 7, it equals 21. what is my number

a. n=28

b. n=14

c. n=7

d. n=147

Respuesta :

lukasshaitzma
lukasshaitzma lukasshaitzma
  • 12-10-2016
if X is increased by 7 to make 21
X + 7 = 21
then rearrange the equation to get X
X = 21-7
X = 14(b)
Answer Link
Ckaranja
Ckaranja Ckaranja
  • 15-10-2016
Let the number be x;
x+7=21
Subtracting 7 from each side,
x+7-7=21-7
x=14
Answer Link

Otras preguntas

Read the text, and then write in Spanish. You are working over the summer in Spain for a real estate agency, and you need to write a short description for a hou
Complete the given operation and write the expression in standard form.
Owen earns $27,980 per year in take-home pay. What is the most money a housing expert would advise him to spend on a monthly mortgage payment? O A. $2798.00 B.
Which environmental factor might positively impact a plant's traits
The Equator divides the Earth into Eastern and Western Hemispheres. True False
The four key steps to researching an idea are searching, finding, collecting, and: a. discovering b. guessing, c. correcting d. analyzing
hjabsjsbsjdbdajxjkfndks​
Which did Nubia and Egypt have in common? pyramids alphabet located along Nile River pharaohs participated in trade gold and ivoryPLEASE HELP I WILL MAKE YOU T
Do you think this ad is effective? Why or why not? (1-5 sentences. 2.0 points)
Give 10 reasons why the colonist wanted to protest British rule