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
aev [14]
3 years ago
10

Which of the equations are true identities?

Mathematics
1 answer:
Klio2033 [76]3 years ago
6 0

Answer:

Equation A is true; Equation B is not

Step-by-step explanation:

There is a standard formula for the "difference of cubes" that is:

x^3 - y^3 = (x - y)(x^2 + xy + y^2)

and this perfectly matches equation A.

Equation B has the square of n (n^2) on the left side but not on the right side.  Thus this is not an identity.

You might be interested in
There is 2 and 3/4 punds of roast beef and 1 and 7/8 pounds of turkey and 2 1/16 pounds of salami if you must put 1/4 of pound o
rosijanka [135]
<span>2 and 3/4 punds of roast beef   2  3/4 =  (4x2) + 3 /4=  11/4 roast beef

</span><span>1 and 7/8 pounds of turkey     1  7/8 =  15/8 </span>turkey 

2 1/16 pounds of salami     2 1/16      33/16 <span>salami

</span><span>if you  put 1/4 of pound of meat 
</span>then 11/4 roast beef   divided by 1/4 = 11/4 x4 = 11 sandwiches roast beef 

15/8 turkey<span> divided  1/4 = 15/8   x 4 = 15/2  = 7 sandwishes
</span>
 33/16 salami divided <span> 1/4  = 33/16 x 4 = 33/ 4 = 8 sandwiches</span>
8 0
4 years ago
I need help with this
Softa [21]
Nothing can be done with this question!
8 0
4 years ago
<img src="https://tex.z-dn.net/?f=15%20%2B%205x%20%20%5C%5C%2014x%20-%206" id="TexFormula1" title="15 + 5x \\ 14x - 6" alt="15
olga_2 [115]

Reorder the terms:

6 + 14x = 15x

Solving

6 + 14x = 15x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-15x' to each side of the equation.

6 + 14x + -15x = 15x + -15x

Combine like terms: 14x + -15x = -1x

6 + -1x = 15x + -15x

Combine like terms: 15x + -15x = 0

6 + -1x = 0

Add '-6' to each side of the equation.

6 + -6 + -1x = 0 + -6

Combine like terms: 6 + -6 = 0

0 + -1x = 0 + -6

-1x = 0 + -6

Combine like terms: 0 + -6 = -6

-1x = -6

Divide each side by '-1'.

x = 6

Simplifying

x = 6


4 0
4 years ago
Please help on number 15
malfutka [58]
76 because what u do to one number is done to the other so u have to subtract 24 to both numbers.    Can u mark me as brainliest??
3 0
3 years ago
The triangles are similar by??
allsm [11]

the SAS similarity theorem

8 0
3 years ago
Other questions:
  • Which table shows a proportional relationship?
    7·1 answer
  • How to turn 3x = -2y into standard form
    11·1 answer
  • The value of x is _____.
    5·2 answers
  • The set of integers is not closed for
    8·1 answer
  • What is 0.8 as a fraction
    5·2 answers
  • Choose the equation of the line that is parallel to the x-axis.
    6·2 answers
  • Please help due soon
    6·2 answers
  • If you could please help with both!! i’m having trouble understanding:0
    14·1 answer
  • Order from least to greatest.<br> 18.186; 18.1806; 18.085; 18.0728; 18.1472
    11·1 answer
  • PLEASE HELP THIS IS MY IXL FOR EXTRA CREDITTTT<br> I NEED #3 &amp; #4
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!