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
Aleks04 [339]
3 years ago
8

What does the denominator of a rational exponent represent

Mathematics
2 answers:
Daniel [21]3 years ago
7 0

The denominator of a rational exponent represents a root.

For example, the exponent \frac{1}{2} represents a square root. Likewise, an exponent of \frac{1}{3} represents a cube root.

_____

You can understand this if you recall what a root means, and what the rules of exponents are. A square root multiplied by itself gives the original value. Consider ...

\displaystyle\left(x^{\frac{1}{2}}\right)\left(x^{\frac{1}{2}}\right)=x^{\left(\frac{1}{2}+\frac{1}{2}\right)}\\\\=x^{1}=x

For other denominator values, the number of factors that must be multiplied to get x is the number in the denominator—just as you expect for a root.

Lunna [17]3 years ago
6 0

So here's the rule from fractional exponents to radicals: x^{\frac{m}{n}}=\sqrt[n]{x^m}

<u>Looking at this rule, the denominator represents the root.</u>

You might be interested in
Jamie has -$48 in her bank account. She saves $9.60 per week from her allowance. How many weeks
lora16 [44]

Answer:

20

Step-by-step explanation:

9.60 × 15= 144 9.60×5=48 15+5=20

4 0
2 years ago
Esther drove to work in the morning at an average speed of 45 miles per hour. She returned home in the evening along the same ro
nydimaria [60]
The key is Esther travelled the same distance - x - in both her morning and evening commute.

45(time she took in the morning, or p) = x
30(time she took in the evening, or q) = x

Therefore 45(p) = 30(q), or divide both sides by 5 and get 9(p) = 6(q). I know you can divide it further, but these numbers are small enough and it's not worth the time.

Since the whole trip took an hour, (p + q) = 60min, and so, p = 60-q.

Therefore 9(60-q) = 6q or 540-9q = 6q. So 540 = 15q, which makes q = 36. If q = 36, then by (p+q)=60, p (the time she took in the morning) must equal 24.

45 miles per hour, her speed in the morning, times (24/60) hours, her time, makes 18 miles travelled in the morning. If you check, 30 miles per hour times (36/60) hours also makes 18 miles in the evening.

<span>Hope that makes a little sense. And I also hope it's right</span>
7 0
3 years ago
Read 2 more answers
Evaluate the expression 2ab^3 + 6a^3 - 4ab^2 when a = 2 and b = 4.
Lady bird [3.3K]
The answer is A) 176 
4 0
3 years ago
Mr Tarun earns dollar $12.50 a day how much would he earn if he works for 6 days​
WARRIOR [948]

Answer:

$75

Step-by-step explanation:

Question:Mr Tarun earns dollar $12.50 a day how much would he earn if he works for 6 days?

Solution:$12.50 in a day

12.50 multiple by 6

=75

Ans.$75

HOPE IT HELPS

CARY ON LEARNING

8 0
2 years ago
Read 2 more answers
18. Jameson and Quincy each deposit $7,000 into accounts that earn 6%
mina [271]

Answer:

Jameson will have about $267.58 less in his account than Quincy

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Helppppppppp asappppppppppppppppp​
    8·2 answers
  • Chase rode his roller skates around the block 5 times for a total of 1 mile yesterday. Today he wants to ride his roller skates
    10·1 answer
  • 35 POINTS PLUS BRAINLIEST
    9·1 answer
  • Algebra 2 help please
    6·1 answer
  • Multiple the following:(x2+4x-3)(x2-6x+7)
    11·1 answer
  • What are the leading coefficient and degree of the polynomial <br><br> 6x^2-10+18x^3+x
    5·1 answer
  • Samantha correctly answered 36 out of 48 questions on a test. She must score 70% or greater to pass the test. Did she pass?
    9·1 answer
  • Find the greatest common factor of the monomials.<br><br> 20x², 36x =
    11·2 answers
  • IXL -8th grade math W.14
    11·1 answer
  • I need help with c please.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!