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
pantera1 [17]
3 years ago
9

Please answer a little quietIT is urgent.Factorize: 4(x-y)^2 -9 .Evaluate : 1001×99​

Mathematics
1 answer:
Zarrin [17]3 years ago
3 0

Answer:

1. (2x - 2y)² - 9

2. 99099

Step-by-step explanation:

We know the a+b formula :

(a-b)² = a² - 2ab + b²

1. 4(x-y)^2 -9

4(x² - 2xy + y²) - 9

4x² - 8xy + 4y² - 9

(2x - 2y)² - 9

2. 1001 × 99​

= 99099

1001

×  99                                                                                                                           ----------

9009

9009×                                                                                                                          -----------                                                                                                                      99099

You might be interested in
Easy Question, Easy Points<br><br><br><br>Topic: Volume
EleoNora [17]

Answer:

a   125600 cm^3

b    327910.2 m^3

Step-by-step explanation:

The volume of a cylinder is given by

V = pi r^2 h

a   = 3.14 (20)^2 100

  =125600 cm^3

b  We know the diameter  r =d/2 = 118/2 =59

V = pi r^2 h

         3.14 (59)^2 *30

        327910.2 m^3

4 0
3 years ago
Read 2 more answers
Can someone help maths
Mamont248 [21]
First find angle EBC. 
The are for a triangle is 180 degrees.
It is a right triangle and has a right angle.
180 - (90 + 50)
180 - 140
angle EBC IS 40
NOW FIND X
The line is 180 degrees.
180 -40 = 140
X = 140 DEGREES
4 0
3 years ago
A force of 60 N is used to stretch two springs that are initially the same length. Spring A has a spring constant of 4 N/m, and
goblinko [34]

Answer:

D:Spring A is 3 m longer than spring B because 15 – 12 = 3.

Step-by-step explanation:

In this question, you should remember the Hooke's Law in physics.

The Hooke's Law simply explains that the extension that occurs on a spring is directly proportional to the load applied on it.

The mathematical expression for this law is

F=-kx

where;

F= force applied on the spring

x = the extension on the spring

k= the spring constant which varies in spring.

The question will need you to calculate the extension on the springs A and B then compare the values obtained.

<u>In spring A</u>

Force, F=60N and spring constant ,k=4 N/m

To find the extension x apply the expression;

F=-kx\\\\60=-4*x\\\\60=-4x\\\\\frac{60}{-4} =\frac{-4x}{-4} \\\\\\-15=x

Here the spring extension is 15 m

<u>In spring B</u>

Force, F=60N and spring constant , k=5N/m

To find the extension x apply the same expression

F=-kx\\\\60=-5*x\\\\60=-5x\\\\\\\frac{60}{-5} =\frac{-5x}{-5} \\\\\\-12=x

Here the extension on the spring is 12 m

<u>Compare</u>

The extension on spring A is 3 m longer than that in spring B because when you subtract the value of spring B from that in spring A you get 3m

=15m-12m=3m

5 0
3 years ago
the room to be covered is rectangular in shape with a width of 20 ft and a length of 28 ft .what is the area of room to be cover
kiruha [24]
A=L×W
A=20×28
A=560ft.
5 0
3 years ago
Read 2 more answers
NEED HELP DUE TODAY HELP
Gennadij [26K]

Answer: C

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • -x-4=9 ( find the x )
    11·2 answers
  • Find the value that makes the equation<br> 2d + 4 = 12 true.
    14·2 answers
  • What will be the difference in the amount saved at the end of two years
    15·1 answer
  • Identify the method that will be used to solve for x for each equation.<br> 4x = 20
    13·1 answer
  • What is -3y-y equal to
    6·2 answers
  • At the beginning of the month, Hercules had 96 violas in his store. He sold 9 violas during the month. What is the ratio of the
    15·1 answer
  • (4−5)−(2−16) What is the answer
    7·1 answer
  • Subtract: 3.8 - 2.923. Explain in your own words how you would solve this, in detail, from start to finish.
    7·1 answer
  • **answer fast pls**
    15·2 answers
  • What’s the correct answer? I need help now
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!