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
ANTONII [103]
3 years ago
9

Factor 81x²-25. Remember there is no middle term. This is a sum and difference of 2 squares.

Mathematics
1 answer:
natulia [17]3 years ago
5 0

Hey there!!

Basic formula :

... a² - b² = ( a + b ) ( a - b )

Equation given :

... 81x² - 25

... ( 9x )² - ( 5 )²

... ( 9x + 5 ) ( 9x - 5 )

Hope it helps!!

You might be interested in
Could use some help!
Natasha_Volkova [10]


[6, ∞) , x >= 6 so

answer is D. last one

6<= x < ∞
6 0
3 years ago
Solve y=f(x) for x . f(x)=23x+4 x= Question 2 Find the input when the output is 2. The input is .
Fantom [35]

Let's find f(x) = 2, which is essentially what the problem is asking, what x corresponds to an output of 2.


Let's solve below:

f(x) = 2

  • Setting up what we know

23x + 4 = 2

  • Substituting in 23x + 4 for f(x) (I'm not sure if this is the correct expression for f(x) due to formatting issues)

23x = -2

  • Subtract 4 from both sides to make a step to isolate x (what we are trying to find)

x = - \frac{2}{23}

  • Divide both sides of the equation by 23 to isolate x

Thus the input is \boxed{x = - \frac{2}{23}}.

4 0
3 years ago
Need Help ASAP
iren2701 [21]
The sum of the interior angles of a triangle is 180 degrees

2x-9+3x+x+3=180
6x-6=180
6x=186
x=31

A=2(31)-9
A=62-9
A=53
8 0
3 years ago
POSSIBLE POINTS: 5.88
Bess [88]

The function of the length z in meters of the side parallel to the wall is A(z) = z/2(210 - z)

<h3>How to write a function of the length z in meters of the side parallel to the wall?</h3>

The given parameters are:

Perimeter = 210 meters

Let the length parallel to the wall be represented as z and the width be x

So, the perimeter of the fence is

P = 2x + z

This gives

210 = 2x + z

Make x the subject

x = 1/2(210 - z)

The area of the wall is calculated as

A = xz

So, we have

A = 1/2(210 - z) * z

This gives

A = z/2(210 - z)

Rewrite as

A(z) = z/2(210 - z)

Hence, the function of the length z in meters of the side parallel to the wall is A(z) = z/2(210 - z)

Read more about functions at

brainly.com/question/1415456

#SPJ1

5 0
1 year ago
Patty is making a poster for science class. She spends. 50 minutes on each. Of 2 days. She completes 1/3 of the poster the first
Viktor [21]

Answer:

She has completed 2/3 of the poster

Explanation:

1/3 of the poster the first day

+

1/3 of the poster the next day

1/3 + 1/3 = 2/3

7 0
3 years ago
Other questions:
  • Which is the solution set of the compound inequality 3.5x - 10 &gt; -3 and 8x - 9 &lt; 39
    11·1 answer
  • 30 POINTS!!!!!!!!PLS COME AND LOOK!!! I NEED YOU GENIUSES!!! I WILL GIVE BRAINLIEST!!!!! AT LEAST COME AND LOOK!!!! WILL FOREVER
    6·1 answer
  • You play video games online. When you sign up with the game site, you get 200 points. You earn 20 more points for each hour that
    15·1 answer
  • Bridget reads 5 pages of her book per day 4 days per week for several weeks.
    8·1 answer
  • (<img src="https://tex.z-dn.net/?f=%20%28%5Cfrac%7B2%7D%7B3%7D%20x%5E%7B-3%7D%20y%5E%7B4%7D%20z%5E%7B2%7D%29%5E%7B3%7D%20%20%20"
    11·1 answer
  • Which choice could be the equation of a line perpendicular to the line represented by this equation? y = 5x− 2
    6·1 answer
  • What is the vaule of -2 1/6 - 1 1/4 + 1 3/4?<br> A. -1 2/3<br> B. -1 1/3<br> C. 2 1/3<br> D. 2 2/3
    15·2 answers
  • Find cos B in the triangle
    5·1 answer
  • I don't understand these questions, could someone please help??
    12·1 answer
  • Click on the solution set graphic until the correct one is displayed.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!