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
Novay_Z [31]
3 years ago
6

Find the sum (a-b)(2a+4b)

Mathematics
1 answer:
Mama L [17]3 years ago
7 0
(a-b)(2a+4b) = 2a² - 2ab + 4ab - 4b² =  2a² + 2ab - 4b²
You might be interested in
Identify the factors of 6ab + 15a - 8b - 20.
atroni [7]
I hope this helps you



3a (2b+5)-4 (2b+5)


(2b+5)(3a-4)
4 0
3 years ago
Read 2 more answers
Abigail is putting tiles on a table top. She needs 48 tiles for each of 8 rows. Each row will have 6 white tiles.
almond37 [142]
I think its like this 
each row has 6 white tiles
8 rows = 48 tiles 
48 - 6 = 42
42 x 8 = 336
so 8 rows = 6 white tiles and 42 purple tiles to make 48 tiles so she will need 336 more tiles to make each 8 rows have 48 tiles

hope this helps : )
8 0
3 years ago
5208 divided by 4 in long division
Veronika [31]

Answer:

 1 3 0 2

4 5 2 0 8

− 4      

 1 2    

− 1 2    

   0 0  

 −   0  

     0 8

   −   8

       0

Step-by-step explanation:


4 0
3 years ago
Zoologists are studying two newly discovered species of insects in a previously unexplored section of rain forest. They estimate
salantis [7]
The population Pa of insect A after t years is given by the equation 
     Pa = 1.3(1-0.038)^t 
while the population Pb of insect B after t years is 
     Pb = 2.1(1-0.046)^t

We equate the above expressions to find the number of years t it will take the two populations to be equal: 
     Pa = Pb
     1.3(1-0.038)^t  = 2.1(1-0.046)^t
     1.3(0.962)^t  = 2.1(0.954)^t
These are the equations that can be used to determine how long it will be before the populations of the two species are equal.

We can now solve for t:
     (0.962)^t / (0.954)^t = 2.1/1.3
     (0.962/0.954)^t = 2.1/1.3
After taking the log of both sides of our equation, number of years t is
     t = log (2.1/1.3) / log (0.962/0.954)
     t = 57 years
Therefore, it will take 57 years for the population of insect A to equal the population of insect B.
8 0
3 years ago
Read 2 more answers
The angle θ lies in Quadrant II. sinθ=3/4 What is cosθ ?
Elden [556K]

Hello from MrBillDoesMath

Answer:

[email protected] = - sqrt(7)/ 4    

which is choice B

Discussion:

This problem can be solved by drawing triangles and looking at ratios of sides or by using the trig identity:

([email protected])^2 + (sin2)^2 = 1

If [email protected] = 3/4 , the

([email protected])^2 + (3/4)^2 = 1 =>              (subtract (3/4)^2 from both sides)

([email protected])^2 = 1 - (3/4)^2  = 1 - 9/16   = 7/16

So...... taking the square root of both sides gives

[email protected] =  +\- sqrt(7)/ sqrt(16) = +\- sqrt(7)/4

But is [email protected] positive or negative?  We are told that @ is in the second quadrant and cos(@) is negative in this quadrant, so our answer must be negative

[email protected] = - sqrt(7)/ 4    

which is choice B


Thank you,

Mr. B


4 0
3 years ago
Other questions:
  • What makes this statement true? 7^-2
    10·2 answers
  • Algebra 2. I don't really understand how to find anything yet.
    9·1 answer
  • 2.07 2.67 - 2.67 how do I put them in order from least to greatest
    5·2 answers
  • Determine the slope of the linear function. y = 4x + 3
    9·2 answers
  • I dont understand what I need to do
    9·1 answer
  • Sue bought ten items at an average price of $3.60. The cost of eight of the items totaled $30. If the other two items were the s
    12·2 answers
  • Please answer correctly !!!! Will mark brainliest !!!!!!!!!!!!!!
    14·1 answer
  • Christopher wants to estimate the mean amount of carbon dioxide that is emitted by burning 1\text{ L}1 L1, start text, space, L,
    13·1 answer
  • PLEASE HELP MEE THANK IF U DOOO
    13·1 answer
  • What are the x- and y-intercepts of the line shown below?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!