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
Effectus [21]
3 years ago
11

Which value of a would make the following expression completely factored x2 – a ? A.12. B.36. C.49. D.81

Mathematics
2 answers:
aksik [14]3 years ago
5 0
The answer to the the question is (x-a) (x+a). 
Solution:
             x-a 
             x+a
         -------------
            ax - a
     x2 - ax
-----------------------
    x2 +  0 - a or x2 -a 


Korvikt [17]3 years ago
4 0
The answer is 12.               

12 is not a perfect square like the others.                         
You might be interested in
The perimeter of a rectangle is 156 inches. The length of the rectangle is five times its width. Find the area of the rectangle.
svlad2 [7]

Answer:

a.

Step-by-step explanation:

i think

8 0
3 years ago
Calculate the number of acres required to produce 1,000 gallons of oil in one year from microalgae and soybeans. Which one (micr
Inessa05 [86]

Answer:

microalgae required less space.

Step-by-step explanation:

Amount of oil to be produced = 1,000 gallons

Now,

We know

10,000 gallons of oil is extracted from the miroalgae per acre per year

and,

From soyabeans the oil extracted = 50 gallons per acre per year

therefore,

To produce 1,000 gallons number of acres required by microalgae

= [ Amount of oil to be produced ] ÷ [ oil extracted per acre from microalgae]

= 1,000 ÷ 10,000

= 0.1 acres

similarly

To produce 1,000 gallons number of acres required by soyabeans

= [ Amount of oil to be produced ] ÷ [ oil extracted per acre from soyabeans]

= 1,000 ÷ 50

= 20 acres

hence,

microalgae required less space.

7 0
4 years ago
ind the surface area of a sphere with a radius of 12 cm. Approximate as 3.14 and round your answer to the nearest hundredth
Bezzdna [24]
The surface area of a sphere is:

A=4πr^2, if r=12 and π is approximated as 3.14 then

A≈4(3.14)(12^2)

A≈4(3.14)(144)

A≈576(3.14)

A≈1808.64 cm^2
5 0
3 years ago
What is the value of 5³ ?
ArbitrLikvidat [17]

Answer:

125

Step-by-step explanation:

5^3 = 5 x 5 x 5

5 x 5 x 5 = 25 x 5

25 x 5 = 125

6 0
3 years ago
Read 2 more answers
The number sentence 4x7=4x3 + 4x4 is an example of what property?
GarryVolchara [31]
It the property of distributive
8 0
3 years ago
Other questions:
  • 1. If P(x)= x^4+ ax^2+ bx-6 with P(4)=6 and P(2)=0, find the values of a and b.
    14·1 answer
  • A quality control expert at LIFE batteries wants to test their new batteries. The design engineer claims they have a standard de
    13·1 answer
  • What is the base....
    10·1 answer
  • What’s the correct answer for this question?
    6·2 answers
  • Help number 21 plzzz
    10·1 answer
  • Find the angles for<br><br>a=?<br>b=?<br>c=?​
    6·1 answer
  • joe wants to purchase a new pair of basketball shoes that are on sale at two different stores. store a has the sale at 20% off.
    15·1 answer
  • Determine which number would satisfy the inequality 3y-8&gt;22. Choose all that apply.
    7·1 answer
  • What are all the signs that indicate the use of an open circle when graphing ?
    8·1 answer
  • HELP ASAP!!!!!<br><br> Prove that the two circles shown below are similar.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!