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
Viefleur [7K]
2 years ago
14

What is 3n² = 243 I NEED THIS ANSWER QUICKLY!!!!

Mathematics
1 answer:
viva [34]2 years ago
8 0

Answer:

n=9

Step-by-step explanation:

You use reverse PEMDAS.

First you would divide by 3 on both sides. This should give you:

n²=81

Then you would find \sqrt{81}. Which is 9.

You might be interested in
The cone in the figure below has a volume of 722 cubic centimeters and a height of 6
azamat

Answer:

r = 10.72 cm

Step-by-step explanation:

h = 6 cm

Volume of cone = 722 cubic cm

\frac{1}{3}\pi r^{2}h=722\\\\\frac{1}{3}*3.14*r^{2}*6=722\\\\r^{2}=\frac{722*3}{3.14*6}\\\\r^{2}=114.97\\\\r = \sqrt{114.97}\\\\r = 10.72

4 0
2 years ago
The legth of a rectangle is the same as the legth of each side of a square. The legth rectangle is 4 cm more than 3 times the wi
ankoles [38]

Let, length and breadth of rectangle is L and B respectively.

It is given that :

The length rectangle is 4 cm more than 3 times the width of the rectangle.

L = 3B + 4  ......1 )

Also, area of square = area of the rectangle + 66

L² = LB + 66

Putting value of L from

L² = ( 3B + 4 )( B ) + 66

L² = 3B²  + 4B + 66

( 3B + 4 )² = 3B²  + 4B + 66

9B² + 16 + 24B = 3B²  + 4B + 66

6B² + 20B - 50 = 0

3B² + 10B - 25 = 0

3B² + 15B - 5B -25 = 0

3B( B + 5 ) -5( B + 5 ) = 0

B = 5/3 units

L = 3( 5/3 ) + 4

L = 5 + 4 = 9 units

Hence, this is the required solution.

6 0
3 years ago
What is equivalent to 5^3•5^4
mafiozo [28]

Answer:

{5}^{7}

Step-by-step explanation:

5^3•5^4 =  {5}^{3 + 4}  =  \purple{ \bold{ {5}^{7} }}

8 0
3 years ago
3. Find the volume of the cylinder
liraira [26]
Diameter=16mm, so the radius is 8. The formula for volume of a cylinder is the area of the base times height, or v=πr²h.
Substituting the values in, we get π(8²)(5.7), which gives us roughly 1146mm^3.
4 0
3 years ago
How do you solve this equation? <br> 8 - 3 (2m-5)
attashe74 [19]
8 + -3 * 2m + (-3)(-5) = 8 + -6m + 15 = 8 + -6m + 15 = (-6m) + (8 + 15 ) = -6m + 23


so the answer is  -6m + 23
8 0
2 years ago
Other questions:
  • Prove that (Cosx-Cos³x)/Sinx=SinxCosx​
    5·1 answer
  • How to do vertex form
    10·1 answer
  • 25-2x=16+x<br> Show work please
    13·1 answer
  • Find the area of the shaded regions. Give your answer as a completely simplified exact value in terms of π (no approximations).
    14·2 answers
  • Liam had $250. Then, he and his classmates bought a present for their teacher, evenly splitting the $120 among the e of them. Ho
    8·2 answers
  • Write a system of linear equations for the graph below
    14·1 answer
  • A bag contains 7 green balls and 3 white balls.
    10·2 answers
  • 9. The Brightline train travels 204 miles in 3 hours, moving at a constant
    12·1 answer
  • (3.6x10^-5)/(1.8x10^2)
    9·2 answers
  • (Please help!!!)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!