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
Leni [432]
3 years ago
15

If x is greater than or equal to zero, then what is x plus the absolute value of x

Mathematics
1 answer:
shutvik [7]3 years ago
3 0

Answer:

2x

Step-by-step explanation:

x ≥ 0

| x | = x  .... absolute value will think all numbers are positive (or 0)

x + | x | = 2x

You might be interested in
The product of the ages of all teenagers at Joyce’s birthday party last Saturday was 2971987200. The number of 18 year olds who
Elenna [48]

Click here to see ALL problems on Age Word Problems

 Question 1128242: The product of the three ages, in years of three teenagers is 4590. None of the teens are the same ages. What are the ages of the three teen ages? (Use guess and check)

A hat and a jacket cost $100. The jacket cost $90 more than the hat. What are the cost of the hat and the cost of the jacket?

Melody picks a number. She doubles the number, squares are result, divide the square by 3 subtracts 30 from the quotient and gets 18. What are the possible numbers that Melody could have picked? What operation does Melody perform that prevents us from knowing 100% certainly which she picked?

(Scroll Down for Answer!)

Did you know that Algebra.Com has hundreds of free volunteer tutors who help people with math homework? Anyone can ask a math question, and most questions get answers!

OR get immediate PAID help on:

Type Your Question

Go!!!

Answer by greenestamps(9721) About Me  (Show Source):

You can put this solution on YOUR website!

These are three very different problems. The rules of the forum are one problem per post. Please follow those rules in the future.

(1) Certainly guess and check is the easiest way to solve this problem, since you know the three ages are whole numbers. But you should be able to get to the solution with very few if any wrong "guesses" by making your guesses logically.

The product of the three ages is a multiple of 10, and therefore a multiple of 5; since all three ages are in the teens, one of them has to be 15. Then 4590/15 = 306.

You could do guess and check again from there. However, if you note that both the other ages have to be greater than 15, and you know the last digit of the product has to be "6", then the only possible pair of ages is 17 and 18. And indeed 17*18 is 306.

ANSWER: The ages are 15, 17, and 18.

(2) Here is an informal solution method using logical reasoning.

Take away the "extra" $90 that the jacket costs; you are left with a jacket and a hat that each cost the same, and the total is now $100-$90 = $10. That means each of them costs $5. Now add those extra $90 back on to the price of the jacket.

ANSWER: The jacket costs $95; the hat costs $5.

(3) Melody picks a number: Call it x.

 

She doubles the number: It is now 2x.

She squares are result: It is now (2x)^2 = 4x^2.

She divides the square by 3: It is now 4x^2/3.

She subtracts 30 from the quotient: It is now 4x^2/3-30.

The number she ends up with is 18.

Solve the equation that says 4x^2/3-30 = 18:

4x%5E2%2F3-30+=+18

4x%5E2%2F3+=+48

4x%5E2+=+144

x%5E2+=+36

x+=+6 or x+=+-6

ANSWER: The two possible starting numbers are 6 and -6. We get two possible answers because of the step where she squares the number.

6 0
2 years ago
Read 2 more answers
PLEASE HELP I HAVE PICTURE!!!!!!!!!!
DENIUS [597]

Answer:

18 acres

Step-by-step explanation:

: ) hope it helps......

3 0
3 years ago
Andy claims that his bird can do single-digit multiplication. He shows the bird 12 cards with simple multiplication problems tha
Ray Of Light [21]
I believe the answer is 6
6 0
3 years ago
Read 2 more answers
Can someone solve this for me plsss i really need help with this no links an dno doing it just for the points need all three que
guajiro [1.7K]
The first one is A and then the next one I believe should be 210 for both
6 0
2 years ago
the derivative of the function f is given by f'(x)=x^2cos(x^2). How many points of inflection does the graph of f have on the op
Vsevolod [243]
The point of inflection is calculated by equating the second derivative to zero and determining x from there.

f"(x) = -x²2xsinx² + cosx²(2x) = 0

2xcosx² - 2x³sinx² = 0
2x (cosx² - xsinx²) = 0

2x = 0   ⇒  x = 0
cosx² - xsinx² = 0   ⇒ x = 3.82 (if you use shift+solve in your scientific calculator)

Thus, the function only has 1 point of inflection and it is at x = 0.
5 0
3 years ago
Other questions:
  • if the variance of the data values in a population is 256, what is the standard deviation of the data values?
    11·1 answer
  • How many tines greater is one mile then one foot
    5·1 answer
  • How do you solve the factoring of 3t^3-7t^2-3t+7
    5·1 answer
  • The Venn Diagram below models probabilities of three events, A,B, and C.
    8·2 answers
  • ???????????!!!!!!!! Please
    9·1 answer
  • Plot the point, (−3, 5).<br><br> Select the point tool. Then, click on the graph to plot the point
    10·1 answer
  • Y=x+3over 8 proportional or nonproportional
    11·1 answer
  • Jamal performed an experiment flipping a coin. He did 10 trials and then his arm got tired. He recorded his results in the table
    11·2 answers
  • If I have 5 and a half gallons of water and each half gallon needs a pack of salt. how many salt packs do I need?
    9·2 answers
  • Convert 3,200,000 to scientific notation.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!