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
Leona [35]
3 years ago
7

Rewrite the following expression with rational exponents. 3 sq root -27x^2 y^7 Show your work

Mathematics
1 answer:
andrew-mc [135]3 years ago
7 0

Answer:

Step-by-step explanation:

The square root is possible only if y≤0

if y>0 the expression lose meaning, in fact (-)(+)(+) = (-) and a square root of a negative number doesn’t exist. x^2 is a square so it is ever positive if x is not 0

if y≤0 can be rewritten as:

3(-27x^2y^7)^1/2

or if we want simplify the expression:

3 \sqrt{3^2 * (-3) * x^2 * y^6 * y} = 3^2|x||y|^3 (-3y) ^1/2

we have to put the symbol of absolute value between x and y because a x^2 and y^6 are numbers that are ever positive, while x and y^3 can be also negative. Thanks to the simbol of absolute value we can “force” them to be positive

You might be interested in
Ummm can u plz tell me what u put in these boxes and um answer 4 pls ​
Lorico [155]

Well your answer for problem 4 is 28. IM not sure what the boxes are for though...

7 0
3 years ago
Please explain to me what the Law Of Syllogism is. 100pts... Explain it well please...
3241004551 [841]
The Law Of Syllogism, which is also called Reasoning by Transitivity, is basically if a = b and b = c, then a = c, which is also the transitive property. Hence the alternate name. It can be used for mathematical deductions and is mainly used in the unit of logic statements, such as conditional and inverse statements. Here is an example:
If it is raining today, then I will wear my raincoat.
If I wear my raincoat today, then I will wear my boots.
When we use the Law of Syllogism, we get:
If it is raining today, then I will wear my boots.

Hope this helps and have a nice day!
7 0
3 years ago
Read 2 more answers
How many sixths are in 3 and 1 third ??
lorasvet [3.4K]
1 whole thing = 6 sixths
3 whole things = 18 sixths

1 third of a whole thing = 2 sixths of it

3 wholes plus 1 third = 18 sixths plus 2 sixths = 20 sixths
6 0
3 years ago
Read 2 more answers
Please, please help. Answer the question, then explain how you got your answer. <br><br> a= -3
Mice21 [21]
3.5*(-3)///////3.5*(-3)//////all of this parts same
3 0
3 years ago
A diver went 25.65 feet below the surface of the ocean and then 16.5 feet further down he then rose 12.45 feet write and solve a
Anastaziya [24]
So a diver went 25.65 ft BELOW so it's negative.
then he went 16.5 ft further down, so that's negative also.
he then rose 12.45 ft, so that's positive.
so the expression is: -25.65+-16.5+12.45, the answer is 23.7
8 0
3 years ago
Other questions:
  • What are common factors of 14 and 30
    6·1 answer
  • Can someone tell me the answer to this question
    14·1 answer
  • Please help! Graph the line for y+1=−3/5(x−4) on the coordinate plane. I just need help with the coordinates. 
    8·1 answer
  • Please solve both step by step I'll mark you as brainliest
    13·2 answers
  • Find y. A. √22 B. 8 C. √42 D. 4
    9·1 answer
  • Can a linear graph bend?
    6·1 answer
  • Find the equation of the axis of symmetry of the following parabola algebraically.
    15·1 answer
  • What whole number comes right before 105?
    15·2 answers
  • 8 1/4 pt is how many cups
    7·2 answers
  • Factor x^2+5x+2 trinomial
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!