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
stiv31 [10]
3 years ago
13

Factorise the following expressions m²-9n²​

Mathematics
1 answer:
Mashcka [7]3 years ago
3 0

Answer:

(m - 3n)(m + 3n).

Step-by-step explanation:

This is the difference of 2 squares, so we use the identity:

a^2 - b^2 = (a - b)(a + b).

So m^2 - 9n^2

(m - 3n)(m + 3n).

You might be interested in
Describe using complete sentences the purpose of the following three tax forms W4 W2 and 1040
disa [49]
I think with a W2, the employer files it and sends it to you, then you use that W2 to fill out either a W4 or a 1040
6 0
3 years ago
I guessed “doesn’t matter” but I really want to know why it might be that
chubhunter [2.5K]
I'm sorry, but the spinner that you choose does matter in this case.

For spinner A, there are 5 equal sections with a 1 being in only one of them as well. This gives you a \frac{1}{5} chance of landing on the number 1.

For spinner B, there are 6 equal sections with a 1 being in only one of them. This gives you a \frac{1}{6} chance of landing on the number 1 - a worse chance than if you were to use spinner A.

So for this question, you have a better chance of landing on number 1 if you choose to use spinner A.
5 0
3 years ago
Find f(-11/5) if f(n) = 5n + 6
V125BC [204]

Answer:

f(-11/5) = -5

Step-by-step explanation:

f(n) = 5n + 6

Let x = -11/5

f(-11/5) = 5*-11/5 +6

          = -11 +6

           = -5

5 0
4 years ago
Mr. Z constructs a cube with 512 magnetic blocks. Students in his two classes will each make an identical cube. There are 28 stu
netineya [11]
25 plus 28 equals 53 and 512 times 53 is 27,136 so he will need 27,136 blocks for all of his students hope this helped
8 0
3 years ago
Marvin earns $8.25 per hour at a summer job. He wants to buy a video game system that cost $206.25 write an equation to model th
Olin [163]
Amount Earned (E) = 8.25*Hours (H)

Since he wants to buy a game system you can also write this as an inequality, if the amount of the game system has any relevance in the problem.
8.25*H >= 206.25 
8 0
3 years ago
Other questions:
  • I need to know what the answer is
    6·1 answer
  • How many different ways can one roll a sum of 6 when rolling two dice?
    14·2 answers
  • If 10% of x is 20, what is 23% of x?
    10·2 answers
  • HELP<br> If 45 cookies will server 15 students. How many cookies are needed 30 students?
    11·2 answers
  • Michael invests $2000 in an annuity that offers an interest rate of 4%
    13·1 answer
  • What is 1/3 plus 1/4
    6·2 answers
  • The slope equals zero and it passes through the point (1, -4). Find the equation of the line.
    14·2 answers
  • I need help please... I don’t know the constant of proportionality... please I need this quick
    5·1 answer
  • Jay works at a sandwich shop. He needs to make 7 turkey sandwiches. Each sandwich will have 1/3 of a pound of turkey. How many p
    10·2 answers
  • In a box there are 150 beads of red and blue colour. If there are 50 beads of red colour, find the ratio of red beads to blue be
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!