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
Maslowich
2 years ago
5

If x varies inversely with y², and x=10 when y=7. find x when y=10

Mathematics
2 answers:
yulyashka [42]2 years ago
7 0

Answer:

  • 4.9

Step-by-step explanation:

<u>Given</u>

x varies inversely with y², then the function is:

  • x = k/y²

<u>x = 10, y = 7, find the value of k by substituting the values of x and y:</u>

  • 10 = k/7²
  • 10 = k/49
  • k = 10*49
  • k = 490

<u>The function is:</u>

  • x = 490/y²

<u>When y = 10, the value of x is:</u>

  • x = 490/10² = 490/100 = 4.9
astraxan [27]2 years ago
6 0

Answer:

Statement says that,

<em>x varies inversely with y²</em>

According to the above problem,we get

x=k/y², where k is a constant

Now, x=10 when y=7, so the value of k is

10=k/7²

k=10×7²

k=10×49

<u>k=490</u>

Hence, when y=10,

we have to find the value of x

So by putting the value of k, we get

x=490/(10)²

x=490/100

<u>x=4.9</u>

★ <em><u>x</u></em><u><em>=4.9</em> is the right answer.</u>

You might be interested in
Use the calculator to graph the functions y = -x + 5 + 2 and y=-(x - 1)2 + 3. Which statement is true?
Nitella [24]
The y is greater than the function
5 0
3 years ago
Graph the solution of −5a+6&gt;11.<br> Please, I need help!!!
horsena [70]

Answer:

\large\boxed{a

Step-by-step explanation:

-5a+6>11\qquad\text{subtract 6 from both sides}\\\\-5a>5\qquad\text{change the signs}\\\\5a

4 0
3 years ago
Is the real number √1.21 rational or irrational<br><br> SOMEONE PLEASE HURRY FAST !!!
Colt1911 [192]
Rational. This simplifies to 1.1

Irrational numbers <span>Cannot Be Written as a Fraction.</span>
4 0
3 years ago
Read 2 more answers
A dress in a store costs x dollars. After a sale, the dress is reduced by 20%. Then, when it still isn't sold, it is reduced by
skelet666 [1.2K]

Answer:

64%

Step-by-step explanation:

Just trust me I did multiple examples to make sure

3 0
2 years ago
Please help me on this question
ozzi
I think A is 57.6 (1.2 times 2 and then times 24)
4 0
3 years ago
Other questions:
  • Express 754,000,000 in scientific notation
    14·1 answer
  • Which doubles fact helps you solve 8+7=15? Write the number sentence.
    11·2 answers
  • If f(x) = –4x2 – 6x – 1 and g(x) = –x2 – 5x + 3, find (f – g)(x).
    6·2 answers
  • How do I find B??????
    14·1 answer
  • It takes a graphic designer 1.5h to make one page of a website. Using a new software, the designer could complete each page in 1
    6·2 answers
  • PLEASE HELP! WILL UPVOTE!
    12·1 answer
  • Personal Statement
    13·1 answer
  • Solve the following System Of Equations Using Substitution or Elimination Methods. Show Work.
    7·1 answer
  • The number 512 is a perfect cube because 512 = 83.
    9·2 answers
  • Need answers for this
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!