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
Alex17521 [72]
2 years ago
5

Simplify the following expression. 5^-5/2 * 5^9/2

Mathematics
2 answers:
Evgesh-ka [11]2 years ago
8 0

Answer:

C. 25

Step-by-step explanation:

When the numbers with same base are multiplied, their powers add up

5^-5/2 * 5^9/2

5^(-5/2 + 9/2)

5^(4/2)

5^2

25

saw5 [17]2 years ago
6 0

When you multiply a base with an exponent by a base with an exponent, you add the exponents together. (But you can only combine the exponents when the bases are the same)

For example:

(x^3)y^2=x^3y^2  (can't combine the exponents because they have different bases of x and y)

x^1(x^2)=x^{(1+2)}=x^3

2^2(2^2)=2^{(2+2)}=2^4=16

5^{(\frac{-5}{2} )}*5^{(\frac{9}{2} )}=5^{(\frac{-5+9}{2} )}=5^{(\frac{4}{2} )}=5^2=25    Your answer is C

You might be interested in
A chair marked with 1800 was sold to a customur for 1504 .Find the rate of discount allowed on the chair
mihalych1998 [28]

Answer:

16.44%

Step-by-step explanation:

3 0
2 years ago
If ED = x + 4 and DB = 3x - 8, find ED, DB, and EB
Tom [10]

Answer:

Part 1) ED=10\ units

Part 2) DB=10\ units

Part 3) EB=20\ units

Step-by-step explanation:

we know that

EB=ED+DB

ED=DB -----> given problem

Substitute the given values and solve for x

x+4=3x-8

3x-x=4+8

2x=12

x=6

<em>Find the value of ED</em>

ED=x+4

substitute the value of x

ED=6+4=10\ units

<em>Find the value of DB</em>

Remember that

ED=DB

therefore

DB=10\ units

<em>Find the value of EB</em>

EB=ED+DB

EB=10+10=20\ units

5 0
2 years ago
Read 2 more answers
Show that the sum of the first 2n natural numbers is n(2n+1)
Leokris [45]

Answer:

This sum is the sum of an arithmetic sequence.  There is a formula for the sum of an arithmetic sequence which can be looked up or derived by a variety of means.

A nice approach for this sequence is the following.  Notice  that the sum of first and last number in the sequence is the same as the sum of the second and second last, and also the same as the sum of the third and third last, and so on.

There are n of these pairs.  So the desired sum is n x (first number + last number).   But the first number is 1 and the last on is 2n.   Thus the desired sum is n(1 + 2n).

Hope this helps!!

Mark Brainleast!!!!!!!!!!!

7 0
2 years ago
Read 2 more answers
PlEASE HELP ME PEOPLE HUMPTH OK ILL SAY IT PEOPLE WANT MONEY TO ANSWER PROBLEMS HERE If the mean of six nu m b e rs is 48, does
SpyIntel [72]

Answer:

No, none of the number need to be 48 for the mean to be 48. To get a mean, you add up all the number and divide it by the amount of numbers.

Example:

the mean of 10, 79, 42, 88, 19, and 50 is 48, but the actual number 48 was not part of the set.

10 + 79 + 42 + 88 + 19 + 50 = 288

288 ÷ 6 = 48

6 0
3 years ago
brainly is the best app in the whole world) sam has 5 dollars he works for 5 hours and he earns 900 dollars and hour how much mo
saveliy_v [14]

Answer:

Sam has $900 more money. In total he now has $905.

5 0
2 years ago
Other questions:
  • A survey of 9,000 customers at Ron’s grocery store showed that 35% (3,150 customers) would buy Grainy-Os cereal. In the first mo
    11·2 answers
  • How do you make an equation for this?
    12·1 answer
  • an airline ramp with a base of 50 makes an angle of 27 with the ground. find the distance a person will walk on a ramp round to
    8·1 answer
  • Table is semicircle of diameter 12 feet. What is the area usin pi = 3.14
    9·1 answer
  • I WILL MARK BRAINLIEST
    14·1 answer
  • Find mZ1 and mZ2 .<br><br> I cant figure it out
    9·1 answer
  • Please help me i really need it
    10·1 answer
  • PLS HELP WHAT IS THE ANSWER?!!
    15·1 answer
  • Can you please help me​
    11·1 answer
  • The following table presents the time taken to review articles that were submitted for publication to a particular journal durin
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!