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
valentina_108 [34]
2 years ago
9

the value of a varies directly as the square of the value of b, and b=3 when a=10. Find the value of a when b=9.

Mathematics
1 answer:
Charra [1.4K]2 years ago
4 0

Answer:

answer = 90

Step-by-step explanation:

General equation:  a = k*b^2

Specifically:          10 = k*(3)^2 = 9 k

Solving for k:  k = 10/9

Then a = (10/9)b^2.    If b = 9, then a = (10/9)(9)^2 = 90 (answer)

You might be interested in
Explain why the product of a nonzero rational number and an irrational number is irrational
spayn [35]

Answer:

If you multiply any irrational number by the rational number zero, the result will be zero, which is rational. Any other situation, however, of a rational times an irrational will be irrational.

3 0
3 years ago
Which equation describes the line graphed above? JUST NEED ANSWER NO NEED FOR EXPLANATION
Zolol [24]

Answer:

B.

Step-by-step explanation:

We can use a graphing calc to determine which line is the correct one.

4 0
3 years ago
Read 2 more answers
Du/dr=(1+sqrt(r))/(1+sqrt(u))_
Maslowich
Solution is supposed to be as follows
<span>u+<span>2 / 3</span><span> u<span>^3/2</span></span>
=r+<span>2 / 3</span><span> r^<span>3/2</span></span> + <span>c</span></span>
4 0
3 years ago
Find x for equation 10 points
alexgriva [62]

Hi!

3x - 30 = x + 10

<h3>Solve by isolating x on one side. </h3><h3>Add 30 to both sides. </h3>

3x - 30 + 30 = x + 10 + 30

3x = x + 40

<h3>Subtract x from both sides. </h3>

3x - x = x - x + 40

2x = 40

<h3>Divide by 2 on both sides</h3>

2x/2 = 40/2

<u>x = 20</u>

<h2>The answer is x = 20</h2>

Hope this helps! :)

-Peredhel

6 0
4 years ago
A 2-inch-wide frame is to be built around theregular decagonal window shown. At what angles a and bshould the corners of each pi
OLEGan [10]
Right angles is one angle.
7 0
3 years ago
Other questions:
  • 35÷(-7)+6 how do i do this prob.
    14·2 answers
  • The base charge of a cab in New York is $2.50 as soon as you enter the cab. There is an additional charge of $2.50 per miles tra
    10·1 answer
  • Determine the present value P you must invest to have the future value A at simple intrest rate r after time t. A=$14,000, r=9.5
    7·1 answer
  • Encuentra las expresiones para los factores 361+19
    5·1 answer
  • What is the answer to numbers 2,3,4,5 and 6
    10·2 answers
  • Use the distributive property to remove the parentheses. 5(8+x)
    14·2 answers
  • Find the domain for the rational function f of x equals quantity x plus 1 end quantity divided by quantity x minus 2 end quantit
    7·1 answer
  • Lucy has $55 to buy a new pair of shoes. Macy’s sells the shoes for $60, but Lucy has a 20% off coupon. Sales tax is 7%. How muc
    13·1 answer
  • Opposite = 1.5. <br><br>adjacent = 4. <br><br>find the acute angle​
    6·2 answers
  • What is the missing fifth term in the<br> pattern below?<br> 1,8, 27, 64, ___
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!