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
grin007 [14]
3 years ago
11

Factor completely and then place the factors in the proper location on the grid. 81a2 + 36a + 4

Mathematics
2 answers:
gizmo_the_mogwai [7]3 years ago
6 0
They are all perfect squares
(9x+2)(9x+20
(9x+2)^2
juin [17]3 years ago
3 0
The answer is (9a+2)2

hope this helps
You might be interested in
Put these numbers in order from least to greatest.<br><br> 7, -1/4,-15/20
Agata [3.3K]

Answer:

The answer is -15/20, -1/4, 7. Thanks

8 0
2 years ago
1. Stephanie would like to make a 5 lb nut mixture that is 60% peanuts and 40% almonds. She has several pounds of peanuts and se
Crazy boy [7]
Answers:

(a) p + m = 5
     0.8m = 2

(b) 2.5 lb peanuts and 2.5 lb mixture

Explanations:

(a) Note that we just need to mix the following to get the desired mixture:

     - peanut (p) - peanuts whose amount is p
     - mixture (m) - mixture (80% almonds and 20% peanuts) that has an amount of m; we denote this as

By mixing the peanuts (p) and the mixture (m), we combine their weights and equate it 5 since the mixture has a total of 5 lb.

Hence, 

p + m = 5

Note that the desired 5-lb mixture has 40% almonds. Thus, the amount of almonds in the desired mixture is 2 lb (40% of 5 lb, which is 0.4 multiplied by 5).

Moreover, since the mixture (m) has 80% almonds, the weight of almonds that mixture is 0.8m.

Since we mix mixture (m) with the pure peanut to get the desired mixture, the almonds in the desired mixture are also the almonds in the mixture (m). 
So, we can equate the amount of almonds in mixture (m) to the amount of almonds in the desired measure.

In terms mathematical equation,

0.8m = 2 

Hence, the system of equations that models the situation is 

p + m = 5
0.8m = 2

(b) To solve the system obtained in (a), we first label the equations for easy reference,

(1) p + m = 5
(2) 0.8m = 2

Note that using equation (2), we can solve the value of m by dividing both sides of (2) by 0.8. By doing this, we have

m = 2.5

Then, we substitute the value of m to equation (1) to solve for p:

p + m = 5
p + 2.5 = 5   (3)

To solve for p, we subtract both sides of equation (3) by 2.5. Thus,

p = 2.5

Hence, 

m = 2.5, p = 2.5

Therefore, the solution to the system is 2.5 lb peanuts and 2.5 lb mixture.  







 
7 0
3 years ago
Do you prefer to express solutions to inequalities using interval notation or as an inequality ? Do you think it’s important to
docker41 [41]

Answer:

I prefer to express solutions to inequalities using interval notation. Both formats are are important but I think interval notation is easier to understand and represents better the solutions.

For example, if you have the following inequation:

x-2> 1

x>3

Therefore, the solution could be written either x>3 OR (3, +inf). But what happens if the solution to the system of equation is x>3 or x<-3? The solution can be easily written as: (-inf, -3) U  (3, inf) instead of <em>'x>3 or x<-3' </em>which is more confusing.

8 0
3 years ago
What’s 1 plus 3 and write a paragraph on why that’s your awnser. Include details
aivan3 [116]

Answer:

1+3=4

Step-by-step explanation:

why the hll do u need a paragraph on that ur in highschool, just why

3 0
3 years ago
Read 2 more answers
5 apples and 6 bananas cost $9.55. 8 apples and 10 bananas cost $15.60. What is the cost of one apple?
iragen [17]

Answer

$1.95

Step-by-step explanation:

15.60 divided by 8

4 0
2 years ago
Other questions:
  • Savannah is having her teammates over after the basketball game. She decided that 2 pizzas would feed 5 people, so how many pizz
    5·1 answer
  • Given the two expressions shown below:
    14·1 answer
  • What is 4.875 expanded into fractions
    6·1 answer
  • 1.) The following figures are congruent. What side corresponds to side CD?
    8·1 answer
  • How would you set up part C to get the answer(answer if you can 60points)
    6·1 answer
  • The united states uses 24℅ of the world's supply energy what fraction of the world's energy is this ?
    9·1 answer
  • -6 plus 15 plus 15 equal
    11·2 answers
  • Please help me answer theseeeee
    12·2 answers
  • Help please thank you!
    11·1 answer
  • PLEASE ANSWER ASAPPPP
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!