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
joja [24]
2 years ago
8

Help plsss 20+ pointsss

Mathematics
1 answer:
Lena [83]2 years ago
4 0

Answer:

3

Step-by-step explanation:

area of square=l*b so

81=3x multiply 3x

81=9x^2

81/9=x^2

9=x^2

\sqrt9=x

3=x

You might be interested in
Pls help I have no clue
suter [353]

Step-by-step explanation:

y-2 = - 3(x-3)

y - 2 =-3x +9

y -2 +2 = - 3x +9 +2

y = - 3x +11

To find the the coordinate

When x =0

y = - 3(0) +11

y= 11

When y = 0

0 = - 3x +11

Subtract 11 from both sides

-3x = - 11

x = 11/3

The y intercept is 11 so, one of your points will be at (0, 11) while the other will be at (11/3, 11).

4 0
3 years ago
Which value of HNK are used to write the function f(x) = x2 + 12x + 6 in vertex form?
anygoal [31]

Answer:

( − 6 , − 30 )

Step-by-step explanation:

Rewrite in vertex form and use this form to find the vertex  ( h , k ) .

6 0
2 years ago
In △RST, RW=27 cm.
sertanlavr [38]

Hello!

I just completed this test and if I'm correct in assuming that this is the same problem I did, then your answer would be 18 cm.


Hope this helps! :)

7 0
2 years ago
Keisha has $20.08 in her purse. She buys a book for $8.72 . How much does she have left?
torisob [31]
Simply subtract 8.72 from 20.08 and you get the answer which is 11.36$
7 0
3 years ago
Read 2 more answers
Jessica wants to plan where she will place furniture in her room, so she has drawn a scale model of her room in order to begin p
Setler79 [48]
To solve this problem you must apply the proccedure shown below:
 1. You have that:
<span> - The scale model is 11 inches long and 8.5 inches wide.
 - The door to her room takes up 1.75 inches.
 - The longest wall in Jessica’s actual room is 15 feet long.
 2. Therefore, the actual size of the door is:
 15 feet=180 inches
 1.75 inches(180 inches/11 inches)=28.63 inches
 3. If the door in completely open, you must apply the formula for calculate the area of a semicircle:
 A=</span>πr²/2
 r=28.63 inches
 A=π(28.63 inches)²/2
 A=1288.11 inches²
 The answer is: 1288.11 inches²
5 0
2 years ago
Other questions:
  • What is 237and 1 half percent?
    5·2 answers
  • Help needed....
    6·1 answer
  • NEED HELP QUCKILY PLZ HURRY
    13·2 answers
  • Which of the following situations can be represented by a function with an infinite number of values in its range and only a fin
    15·1 answer
  • What is 10/9 closer to 1, 1/2
    12·1 answer
  • Hi can someone help me on this please? I am having trouble understanding this one :) thx
    14·2 answers
  • PLEASE HURRY
    10·1 answer
  • What is a volume of this composite solid?
    5·2 answers
  • A photocopy of a polygon was reduced to 80% of its original size. The , the copy was again reduced to 80% of its size. What is t
    7·1 answer
  • Is 5 in the solution set of x + 3 &gt; 8? Explain
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!