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
Sever21 [200]
2 years ago
13

(x^2+xy-3y^2) - (4x^2-xy+y^2)

Mathematics
1 answer:
olga nikolaevna [1]2 years ago
4 0

Answer:

-3x^2+2xy-4y^2

Step-by-step explanation:

(x^2+xy-3y^2)-(4x^2-xy+y^2)

x^2-4x^2+xy-(-xy)-3y^2-y^2

-3x^2+xy+xy-4y^2

-3x^2+2xy-4y^2

You might be interested in
5. Which statement best describes qualitative data? (Points : 1). It cannot be represented by numbers.. . It cannot be a depende
kodGreya [7K]
Qualitative data describes the data analyzed through quantitative analysis. Qualitative data refers to the color, texture, olfactory and sensory attributes. These are attributes that are rather described than calculated. In this case, the answer is A. I<span>t cannot be represented by numbers.</span>
8 0
2 years ago
Read 2 more answers
So what is the answer?
Dimas [21]
Answer for what?????
4 0
3 years ago
Design an instructional activity that could help learner's recognise the decimal fractions can be applied across environmental s
lapo4ka [179]

An instructional activity that could help learners recognize fractions includes an analog clock, fraction strips, and pattern block.

<h3>What is an instructional activity?</h3>

Instructional activities are routine segments of instruction that show how the teacher and students will participate and interact with materials and content.

An instructional activity that could help learners recognize fractions includes an analog clock, fraction strips, and pattern block. For example, if one wants to teach students about fractional parts that are divided equally into twelfths, the analog clock can be ideal.

Learn more about fractions on;

brainly.com/question/78672

7 0
2 years ago
What's the relationship between the values of 4s in 44000
oksano4ka [1.4K]
The relationships of the 4's is 40,000 and 4,000
5 0
3 years ago
Read 2 more answers
Give an example of a function f : N → N that is surjective but not injective. You must explain why your example is surjective an
Helen [10]

Answer:

Consider f: N → N defined by f(0)=0 and f(n)=n-1 for all n>0.

Step-by-step explanation:

First we will prove that f is surjective. Let y∈N be any natural number. Define x as the number x=y+1. Then x∈N, and f(x)=x-1=(y+1)-1=y.  We conclude that f is surjective.

However, f is not injective. Take x1=0 and x2=1. Then x1≠x2 but f(x1)=0 and f(x2)=x2-1=1-1=0. We have shown that there are two natural numbers x1,x2 such that x1≠x2 but f(x1)=f(x2), that is, f is not injective.

Note:

If 0∉N in your definition of natural numbers, the same reasoning works with the function f: N → N defined by f(1)=1 and f(n)=n-1 for all n>1. The only difference is that you consider x1=1, x2=2 for the injectivity.

7 0
2 years ago
Other questions:
  • Use the distributive property to rewrite the expression a(m-12)=
    10·1 answer
  • May somebody please help me on this
    9·1 answer
  • Which function has a domain of all real numbers except x=pi/2+-npi?
    11·2 answers
  • Two consecutive odd numbers whose sum is 144 ?
    14·2 answers
  • I need help with unit 5 lesson 9.2 math.
    7·1 answer
  • What is the volume of the pyramid? A.420cm^3 B.139cm^3 C.484cm^3 D.142cm^3
    13·2 answers
  • Yulian works at the zoo feeding the animals. He puts water in the elephant habitat at the beginning of the day. The table shows
    8·1 answer
  • HELP FOR BRAIN Or be nice
    14·1 answer
  • 5/2 = 11/x<br> What is x
    7·1 answer
  • Which statement is true?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!