1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lorasvet [3.4K]
3 years ago
5

I am thinking of a positive number. If I square it, double the result, take half of that result, and then add 12, I get 21. What

is my number?
Mathematics
1 answer:
Margarita [4]3 years ago
8 0

Answer:

3

Step-by-step explanation:

work backwards.

x^2*2/2+12=21

x^2+12=21

x^2=9

x=3

You might be interested in
The figure shows a carpeted room. How many square feet of the room are carpeted?
damaskus [11]

Answer:

The answer is B. 28.

Step-by-step explanation:

Did the test and got it correct! PLEASEEE BRAINLIEST

6 0
3 years ago
Read 2 more answers
Ross and 5 of his friends are going kayaking. They rented 6 kayaks for $420. Then they bought food for all 6 people, which cost
Minchanka [31]
 $420+$144=$564
then you divide $564 by 6 which is...
$94 is how much each person payed
5 0
3 years ago
What is a stock index?
stepladder [879]
Is a measurement of the value of a section of the stock<span>market. It is computed from the prices of selected stocks (typically a weighted average). It is a tool used by investors and financial managers to describe the market, and to compare the return on specific investments. HOPE THIS HELPS</span>
7 0
3 years ago
Read 2 more answers
What is the median set of this data set 22 37 49 15 72
Alexandra [31]

Answer:37

Step-by-step explanation:

first you put them in order from least to greatest

which would be 15,22,37,49,72

then the middle number would be your answer hope this helps!

-MalStar

6 0
3 years ago
Read 2 more answers
4.) v = 3k<br>Solve for t​
qaws [65]
The whole thing flips around and ends up being t = 3k/?
7 0
3 years ago
Other questions:
  • The perimeter p of a rectangle is related to the length l and width w through the equation p=2l+2w. determine the width in terms
    13·1 answer
  • What is 1133.23 rounded to the nearest whole number
    12·1 answer
  • Write an integer to represent the following: a debt of $18 dollars
    15·1 answer
  • Point p(a,b) is in the first quadrant on the graph of the line x+y=4. A triangular region is shown on the diagram. What is the m
    5·1 answer
  • 20 POINTS - will mark brainliest!!<br><br> 4. write the following in exponential form (b only)
    8·1 answer
  • The end points of wx are w (-5,-1) and x (2,6) What is the length of wx
    12·1 answer
  • If a car travels 81
    8·1 answer
  • Tables A telephone exchange operator assumes that 8%8% of the phone calls are wrong numbers. If the operator is correct, what is
    10·1 answer
  • PLEASE HELP ME!! :(
    6·1 answer
  • Determine if the function is linear or nonlinear . EXPLAIN​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!