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
Advocard [28]
3 years ago
8

The edge of one is 4cm longer than the edge of a second cube.The volume of the cubes differ by 316m square. Find the length of e

ach cube
Anyone that answers I will mark as brilliant
Mathematics
1 answer:
quester [9]3 years ago
5 0

Answer:

The sides are 3 and 7 cm long.

Step-by-step explanation:

Let the lengths be x and x+4 cm, then

(x + 4)^3 - x^3 = 316

x^3  + 12x^2 + 48x + 64 - x^3 = 316

12x^2 + 48x + 64 - 316 = 0

12x^2 + 48x - 252 = 0

12(x^2 + 4x - 21) = 0

12(x + 7)(x - 3) = 0

x = -7, 3

So one cube has side of length  3 cm.

The other has side 3+4 = 7 cm.

You might be interested in
your gym membership cost $33 per month after an initial membership fee. you paid a total of $228 after 6 months. writer an equat
grin007 [14]

Answer:

what i did was multiply 33*6 and got 198 and then 228-198 to find out that the initial fee was 30 dollars. then multiply 33*9+30 to get a  9-month total cost of $327

Step-by-step explanation:

cost = $33 per month + fee  

1.  c(m) = 33m + f

 33(6) + f = 228

198 + f = 228

f = $30 membership fee  

c(m) = 33m + 30

 2.  at 9 months:  33(9) + 30 = $327

hopefully this helps :)

have a nice day !!

7 0
3 years ago
Help a little eeeeeeeeeee
ozzi
0.8 or 4/5
Both are correct, but in different form.

Your welcome.
7 0
3 years ago
together Charlotte and vinny have 20 marbles. charlotte has 4 times as many as vinny. how many marbles does Charlotte have.
nadya68 [22]

Answer:

5

Step-by-step explanation:

20 divided by 4 is 5

5 0
3 years ago
PLEASE help me solve this problem. I really need help.
mote1985 [20]
When:
a = b = 0 we have point (0,0).
a = 0 and b ≠ 0 vertical line segment from (0, -b) to (0, b)
a ≠ 0 and b = 0 horizontal line segment from (-a, 0) to (a, 0)
a ≠ 0 and b ≠ 0 a ≠ b ellipse
a ≠ 0 and b ≠ 0 a = b circle
3 0
3 years ago
Are the events "selecting a female" and "selecting a students who has brown eyes" independent?​
Deffense [45]

Answer:

No, the events are not independent.

Step-by-step explanation:

Suppose that there are two events, A and B.

Such that first happens the event A and then the event B.

If the outcome of event A affects the probabilities for the different outcomes of event B, then the events are dependent.

In this case, if we have only the event "selecting a student who has brown eyes"  (at random)

The probability is equal to the quotient between the total number of students with brown eyes, and the total number of students, then this probability is:

P = 91/200 = 0.455...

Now, if we first impose the "selecting a female", now when we want to select a student with brown eyes we will look only at the female students.

In this case, there are 32 with brown eyes and a total of 90 female students, then the probability of selecting a female with brown eyes at random is:

P = 32/90 = 0.355...

So the probability is different, which means that the events "selecting a female" and "selecting a student who has brown eyes" are not independent.

4 0
3 years ago
Other questions:
  • Help!<br> What would d be?
    7·1 answer
  • Solve <br> 3/4z-1/3=2/3z+1/5
    5·1 answer
  • Okay so! This is really urgent and it’s due really soon and I really don’t understand this question, could someone please help?
    10·2 answers
  • Katoni bought 2 1/2 dozen pencils . There are 12 pencils in a dozen. How many pencils did Katoni buy?
    10·1 answer
  • How many ducks can fit in a duck pond if there are 24 ducks and 10 lakes
    6·1 answer
  • A colleague has been tutoring six students in 11th grade to prepare for the ACT. This colleague has asked you to evaluate the pe
    13·1 answer
  • Solve for x<br>2x+4(2x+7)=3(2x+4)??​
    6·1 answer
  • Need help with this one question
    11·1 answer
  • Which set of ordered pairs does not represent a function?
    10·1 answer
  • Writing the equation of the line given slope and y-intercept
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!