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
Free_Kalibri [48]
2 years ago
8

Which shows the factored form of x2 – 12x – 45?

Mathematics
1 answer:
lapo4ka [179]2 years ago
3 0

Answer:

(x – 3)(x + 15)

Step-by-step explanation:

Consider the form x2 + bx + c.  Find a pair of integers whose product is  c and whose sum is  b. In this case, whose product is  -45 and whose sum is 12.

Write the factored form using these integers.

(x – 3)(x + 15)

You might be interested in
Which statements are true?
Montano1993 [528]
Three of those statements are true. 
The only one that is NOT correct is:
<span>Any quadrilateral with one right angle is a rectangle.


</span>
6 0
3 years ago
-6 4/9 -3 2/9 -8 2/9<br> -
Zinaida [17]

Answer:

-17.8884

Step-by-step explanation:

- 6.444 - 3.2222 - 8.2222 = -17.8884

8 0
3 years ago
Read 2 more answers
City parks are part of the natural environment. Please select the best answer from the choices provided. T F
Evgesh-ka [11]
It is false that city parks are part of the natural environment.
Since we are the ones who built them, they couldn't have been created by nature.
5 0
3 years ago
Read 2 more answers
3p-2=-29 what dose p stand for???
denis23 [38]

Answer:

P could stand for anything

Step-by-step explanation:

In this case its just the variable

4 0
2 years ago
Read 2 more answers
A florist is creating 10 centerpieces. Roses cost $2.50 each, lilies cost $4 each, and irises cost $2 each. A customer plans on
lana [24]

Answer:

8 Roses; 1 lilie ; 3 irises

Step-by-step explanation:

Let the number of roses be 'a' , number lilies be 'b' and number of irises be 'c'

$300 for 10 centerpieces means $30 per centerpiece. therefore,

2.5a+4b+2c = 30 .......................(1)

also each centerpiece must contain 12 flowers, therefore,

a+b+c=12 .................................(2)

also twice as much roses as the number of irises and lilies combined

a = 2(b+c)

a-2b-2c=0 ............................... (3)

a) System of equation are equations (1) , (2) & (3).

Writing a matrix equation

\left[\begin{array}{ccc}2.5a&4b&2c\\a&b&c\\a&-2b&-2c\end{array}\right]  = \left[\begin{array}{ccc}30\\12\\0\end{array}\right]

b) Solving the simultaneous equation,

from (3), a=2b+2c

substituting for 'a' in equation (1) and (2),

⇒ 2.5(2b+2c)+4b+2c=30

⇒ 5b + 5c + 4b + 2c = 30

⇒ 9b + 7c = 30 ..................... (4)

⇒ 2b + 2c + b + c = 12

⇒ 3b + 3c = 12

⇒ b = 4 - c ..............................(5)

Substituting (5) in (4)

9 (4 - c) + 7c = 30

36 - 9c+7c =30

36-30 = 2c

c = 3

b = 4-3 = 1

a = 2(3+1) = 8

3 0
3 years ago
Other questions:
  • How many solutions does the equation −4x+9=−4x+9−4x+9=−4x+9 have?
    7·1 answer
  • Select the correct answer.
    14·1 answer
  • A random sample of 60 mathematics majors spent an average of $200.00 for textbooks for a term, with a standard deviation of $22.
    14·1 answer
  • A paint box contains 12 bottles of different colors. If we choose equal quantities of 3 different colors at random, how many col
    5·2 answers
  • Look at the diagram and the following information to find the value of x.
    5·1 answer
  • 6(x – 1) = 9(x + 2) what is the answer
    10·1 answer
  • MATH HELP PLEASE DUE SOON
    14·1 answer
  • I need halp psl bfghjhg
    8·2 answers
  • A) 289.6 divide by 6.4 <br><br> b) 236.592 divide by 0.36
    11·2 answers
  • Find the solution of the system of equations.<br> 3x – 3y = 18<br> 3x – 8y = -2
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!