Brenewhitchra Brenewhitchra

23-09-2016
Mathematics

contestada

If you add 15 to 3 times the mystery number you get 78 was the mystery number

Respuesta :

hangingbyathread hangingbyathread

23-09-2016

so the equation looks like this : 15*3x=78
subtract 15 from both sides: -15 -15
then divide by 3 from both sides
to isolate the variable: 3x=63
3/3x=63/3
x=21 (your mystery number is 21)

Answer Link

Otras preguntas

how to write the introduction of essay plastic pollution

Andrew’s parents are very strict. They expect andrew to obey them, and he is not allowed to question what they say or he is punished. His parents yell at him of

Vector has 4 orange picks for every 3 green picks if 8 of the picks are orange how many are green

The Scientific Method is an organized way of A Making observations B Testing a hypothesis C collecting data and presenting results. D All of the above

Audra was drawling a picture

Need urgent help in mathematics!! Will mark brainliest!!!! PLEASE look at the photo to answerthe question ..... In the photo you will find the question and the

what was paul revere side of american revolution

PLEASE HELP ME, THANKS:) If M is the set of all square of integers that are less than 100 and N is the set of all positive even numbers that are under 30, writ

How can you get fat from eating too many carbohydrates

simplify and preform the operation indicate. 2^3x3^2