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
Alexandra [31]
3 years ago
14

If (3a + 3b + 1) (3a + 3b - 1) = 80, then a + b =

Mathematics
1 answer:
seropon [69]3 years ago
8 0

Answer:

a+b = 4\sqrt{3}

Step-by-step explanation:

3(a + b)^2 = 81

(a + b)^2 = 27

a + b = sq rt 27

a + b = \sqrt{9}· \sqrt{3}

a + b = 3\sqrt{3}

You might be interested in
23=x-9;x+14 I need help with this problem.
frez [133]
 is  this answer 
x=1 ;) 
6 0
3 years ago
The sum of two numbers is 300 and the two numbers have a ratio of 20:10. Find the larger number.
Komok [63]

Step-by-step explanation:

Let the two numbers be 20x and 10x

Then by the question,

20x + 10x = 300

or, 30x = 300

or, x = 300/ 30

x = 10

Now the larger number

20x = 20* 10 = 200.

Hope it will help you :)

7 0
3 years ago
Describe the relationship between the number of places a decimal point is moved to the left and change in the value of the numbe
Gnoma [55]
Makes the value a negative
8 0
3 years ago
For each right triangle below, find the missing side (Pythagorean’s Theorem) and the missing angle (Angle Sum theorem.)
valkas [14]

Answer:

a=21.2

n=√29

Step-by-step explanation:

90+68.2+a=180

a+158.2=180

a=21.2

2^2+5^2=n^2

4+25=n^2

n^2=29

n=\sqrt{29}

3 0
3 years ago
Express as a unit rate: 5 apples for $3.00
Vanyuwa [196]
5/$3.00 is the unit rate. Hope it helps!
3 0
4 years ago
Other questions:
  • 2. A vine called the mile-a-minute weed is known for growing at a very fast rate. It can grow up to 6 in per day. If the startin
    5·1 answer
  • Simplify this algebraic expression completely 10y-3(y+5)
    13·2 answers
  • -2=3(y-2) how do you solve this problem for y​
    13·1 answer
  • The diameter and height of a cylinder are equivalent to the edge lengths of a cube. which figure has a greater volume?
    14·1 answer
  • Y’all should help on this ASAP
    11·1 answer
  • What is the scale of a drawing where a 6 meter wall is 4cm long<br> 1 cm=_____________________ m
    9·2 answers
  • Is the inverse F(x) a function
    6·1 answer
  • What do u add to 3 and 3 / 8 to make 7
    6·2 answers
  • Someone pls help me :p<br><br> Which is an irrational number?<br> It’s question number 5 pls
    9·1 answer
  • Need help with this plz help me
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!