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
uranmaximum [27]
3 years ago
6

Can someone answer this question and make sure they show working out. Will reward brainliest to the best answer.

Mathematics
1 answer:
wolverine [178]3 years ago
3 0

Answer:

8a²+8a+12b = 8a²+8a+12b

Step-by-step explanation:

first, expand the brackets

4a + 4a + 12a² + 8b + 4b - 4a²

then, collect like terms

8a + 8a² + 12b

then, rearrange

8a² + 8a + 12b

You might be interested in
Five double-digit numbers We have five consecutive positive double-digit integers. If we swap places on the numbers in the large
barxatty [35]

Answer:

  • 33

Step-by-step explanation:

<u>Let the numbers are:</u>

  • x, x + 1, x + 2, x + 3 and x + 4
  • Their sum is 5x + 10
  • Their mean is (5x + 10)/2 = x + 2

If we swap the digits on the largest number, the sum increases by 1 more than x + 2

<u>We are looking for the number x + 4 = ab such that:</u>

  • ba - ab = ab - 2 + 1
  • ba = 2ab - 1
  • 10b + a = 2(10a + b) - 1
  • 10b + a = 20a + 2b - 1
  • 8b = 19a - 1
  • 19a = 8b + 1

<u>By trial method we get the solution:</u>

  • a = 3, b = 7

<u>Since x + 4 = 37, the lowest number is:</u>

  • x = 37 - 4 = 33

<u>Lets verify:</u>

  • 33, 34, 35, 36, 37

<u>The sum is:</u>

  • 5*33 + 10 = 175

<u>The mean is:</u>

  • 35

<u>Change the largest number tp 73 and find the sum again:</u>

  • 175 + (73 - 37) = 175 + 36 = 175 + 35 + 1

The sum has increased by 1 more than 35

3 0
2 years ago
The polygons are similar but not necessarily drawn to scale find the value of x x -3 8 16 2.5 to 4
Dmitriy789 [7]
You have to multiply the smaller one by a common number to make them equal. If you multiply it by 4;

4x4=16
2x4=8
2.5x4=10

So, plugin to get, x-3=10.

x=13.
7 0
3 years ago
Please answer ALL of the following if you do so i will give you brainiest :))))) :
chubhunter [2.5K]
2x^2 if x=1/8 is 1/16
4x^2 if x=1/8 is 1/2
8 0
2 years ago
Read 2 more answers
$4750 invested at 10% p.a compounded semiannually for 10 years, calculate the interest
alexgriva [62]
<h3>Answer:  $7,853.16</h3>

Work Shown:

A = P*(1+r/n)^(n*t)

A = 4750*(1+0.10/2)^(2*10)

A = 12,603.164099436

A = 12,603.16

That represents the account balance after 10 years. To find the interest only, subtract off the deposit amount.

interest = A-P = 12,603.16 - 4,750 = 7,853.16

6 0
2 years ago
In a lake, there is a patch of lily pads. Every day, the patch doubles in size. If it takes 48 days for the patch to cover the e
GalinKa [24]
45-45+56=56 XX_BoxercarnXXJay is my roblox username if you want to be friends
4 0
2 years ago
Other questions:
  • What is 0 best location in the real number system
    12·1 answer
  • What is 4/5+(−7/5)?<br> (it's in fraction form)
    6·2 answers
  • I need help with 1-4
    10·1 answer
  • The diameter of a circle is 8. What is the area of the circle in terms of pi?
    6·1 answer
  • A certain field is a rectangle with a perimeter of 918 feet. The length is 181 feet more than the width. Find the width and leng
    11·1 answer
  • 3x + y = 4<br> x - 2y = 3
    10·1 answer
  • Please need help ASAP I will give brainliest
    7·1 answer
  • Tom has a part-time job. On Wednesday, Tom earned $20.50, and on Thursday he earned $36.21. On Friday, Tom earned twice as much
    14·1 answer
  • Find the value of the expression below if x=10. x2−2(x+5)<br>PLZ HELP GIVING BRANLIEST
    15·1 answer
  • Math multiple choice
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!