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
kramer
3 years ago
10

81^1/2 / 3^-1 = A. 9 B. 3 C.(81/3)^-1/2 D. 27

Mathematics
2 answers:
Vinvika [58]3 years ago
8 0

Answer:C

Step-by-step explanation:

81^½÷3^-1=√81÷(1/3)

=9÷3=3

OlgaM077 [116]3 years ago
8 0
The answer is D.

When something is set to a fraction of a power, it makes the base a square root. And since 81 is going to the power of 1/2 it is just squaring it. The square root of 81 is 9.

Next, anything to a negative power turns the base number into a fraction, so 3^-1 turns into 1/3^1 or 1/3.

Finally, you solve: 9/ 1/3. Fractions take the reciprocal of themselves when they are being divided so the equation is more like 9*3. And 9*3 is 27. So the answer is D, 27.

Hope this helps!
You might be interested in
17. Find the height of a rectangular room that
vichka [17]

Answer:

the height: h=2,25

Step-by-step explanation:

volume of rectangular box = wide*long*the height

----> the height = volume of rectangular box / ( wide*long) = 2,25

give me 5 stars and hearts^^

4 0
2 years ago
Read 2 more answers
Help . pls LANAHJAGAHGHAA
Bond [772]

Answer:

2:3

Step-by-step explanation:

7 0
3 years ago
My sister is 6 1/2 years old. My brother is 4 3/4 years younger than my sister. How old is my brother? Plz help
chubhunter [2.5K]
Your bother is 2 1/2 years old
 
hope this helps :)
6 0
3 years ago
Read 2 more answers
Square ABCD has side length a. Half circles with
Inga [223]

The area of the shaded region is 0.215a^2

<h2>Area of composite objects</h2>

The area of the shaded region is expressed according to the formula:

  • A = A_s - A_c

Get the area of the square As

As = a²

A_c = \pi (0.5a)^2\\&#10;A_c = 0.785a^2

Take the difference in the areas

Area of the shaded part = a^2-0.785a^2\\&#10;

Area of the shaded part = 0.215a^2

Hence the area of the shaded region is 0.215a^2

Learn more on area of composite objects here: brainly.com/question/22716761

7 0
3 years ago
Need help with this asap please
Rainbow [258]
Since they are similar, that means they are proportionally the same.
So KL is similar to PN
JL is similar to PM

So,
You need to find how much bigger is the second triangle from first.
It is proportionally scaled up.

KL/JL = PN/ PM

You basically put in order of triangles. Left triangle on left side of equal sign and right triangle on right side of equal sign. You put in denominator the similar sides and numerator the similar sides (the side that is similar to the side of the other triangle)

5/6 = PN / 9
Cross-multiply
PN * 6 = 5*9
6PN = 45
PN =45/6

PN =7.5
5 0
2 years ago
Other questions:
  • Missing fraction<br> blank + 1/16 = 3/2
    5·1 answer
  • If x to the power of 2 = 10 what is the value of x?
    7·2 answers
  • I buy 5 apples on Monday, and 7 more on Tuesday. How many have I bought in total?
    14·2 answers
  • What is the least 10 digit whloe number
    14·2 answers
  • You are at a concert and the seating area is shown below. Suppose you think each person takes up 2 square feet, estimate the att
    5·1 answer
  • II. Using Radians to Measure Arcs and Angles
    15·1 answer
  • Find (4 × 105) − (9 × 102).
    7·1 answer
  • The student council is selling tickets to a school dance. One teacher decides to pay $10 for his class, and the students in the
    10·1 answer
  • Solve the logarithmic equation<br><br> log(3x)+log(2x)=3
    11·1 answer
  • Question
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!