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
Galina-37 [17]
2 years ago
9

. The volume of a box is 405 cubic units. The length is x units, the width 4 units greater than the length, and the height is 9

units. Find the length and width of the box.
Mathematics
1 answer:
lukranit [14]2 years ago
3 0

Answer:

length = 5

width = 9

Step-by-step explanation:

V = lwh

let 'x' = length

let '4+x' = width

9 = height

405 = 9x(4+x)

405 = 36x + 9x²

this is a quadratic equation:  9x² + 36x - 405 = 0

factor out a 9 to get:

9(x² + 4x - 45) = 0

9(x-5)(x+9) = 0

one root is 5 and the other is -9

since distance cannot be negative we use 5 as the length and 9 is the width

You might be interested in
How many times does the 8 fit into the 49
Vlada [557]

Answer:

6.125

Step-by-step explanation:

49 divided by 8

49÷8=6.125

4 0
3 years ago
Read 2 more answers
No need to show work only need answer thx!
Stella [2.4K]
X=-5, X=4 hope this helps
5 0
3 years ago
Find the circumference of a circle with a diameter of 15 inches... Round to the nearest tenth and include units in your answer..
rosijanka [135]

Answer:

<em>47. 1 inches ; where inches ⇒ units</em>

Step-by-step explanation:

Consider the Circumference as such;

Diameter - 15 inches,\\Circumference - 2\pi r, r - radius,\\\\2\pi r = \pi d, d - diameter ( considering, 2 * r = diameter )\\\\Circumference = \pi * d = \pi * diameter = \pi * 15 = ( About ) 47.1 inches\\Solution; Circumference = ( About ) 47.1 inches

<em>From this we can tell that ⇒ Answer; 47. 1 inches, where inches - units</em>

6 0
3 years ago
Read 2 more answers
Plz help ❤️ 2 questions worth 13 points! Thanks!! :)))
bazaltina [42]

Question 1 might be B. 0.3

Question 2 might be D.TW, TM, CW, CM, HW, HM

I'm not 100% sure though

8 0
3 years ago
) How long does he travel at 30 km/h, if he travels 1.2 h at 20 km/h?​
GREYUIT [131]

Step-by-step explanation:

please mark me as brainlest

4 0
2 years ago
Other questions:
  • Please help me thank you. :)
    6·1 answer
  • Help!! Need this question done in 20mins. I don't have a graphing calculator to give me the window screen!
    15·1 answer
  • You are going to build a new garage similar to the rectangular one you currently have. The current dimensions are 25 feet wide b
    7·1 answer
  • The exchange rate of U.S. dollars to British pounds (£) .63. You have $4000 to convert to British pounds. How many british pound
    11·2 answers
  • In a​ company, ​55% of the workers are men. If 1,350 people work for the company who​ aren't men ​, how many workers are there i
    9·1 answer
  • Solve the following equaion.<br><br> 6x - 4 = 2 + 3x
    15·2 answers
  • The decorating committee for a
    14·1 answer
  • 90% of 60,000,000 <br><br> Please help soon
    9·2 answers
  • A circle with a radius of One-half ft is dilated by a scale factor of 8. Which statements about the new circle are true? Check a
    12·1 answer
  • Whats the two correct answers???<br><br><br><br>will give brainliest
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!