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
bekas [8.4K]
2 years ago
5

How to factor this expression: x^2-9?

Mathematics
1 answer:
Lena [83]2 years ago
7 0

Answer:

(x+3)(x-3)

Step-by-step explanation:

rewrite "9" as 3^2

so it is x^2-3^2

You use the difference of squares: a^2-b^2=(a+b)(a-b)

apply it: (x+3)(x-3)

You might be interested in
What is the measure in radians for the central angle of a circle whose radius r = 4 cm, and intercepted arc length s = 1.2 cm? E
rodikova [14]

Answer:

17.1972degrees

Step-by-step explanation:

length of an arc = theta/360 * 2πr

Substitute the given angle;

1.2 = theta/360 * 2(3.14)(4)

1.2 = theta/360 * 25.12

1.2/25.12 = theta/360

0.04777 = theta/360

theta = 360 * .04777

theta = 17.1972

Hence the required angle is 17.1972degrees

6 0
3 years ago
PLEASE HELP DUE NOW!!!<br> WILL MARK BRAINLIEST!!!
Ulleksa [173]

Answer: -10, 10

Step-by-step explanation:

first lets add the two equations. add the x's, add the y's, add the constants on the right.

we get

0x - 1y = -10

so then divide --10 by -1 because we do the opposite operations to both sides

and we get y = 10

now substitute y = 10 into the first equation

-10x - 9(10) = 10

and then we get -10x - 90 = 10

now add 90 to both sides

-10x = 100

divide 100 by -10

x = -10

y = 10

checks out

EPIC. STAY EPIC AND AWESOME FRIEND.

3 0
2 years ago
What value of x is in the solution set of 4x – 12 ≤ 16 + 8x?Which is a correct first step in solving the inequality –4(2x – 1) &
Anna71 [15]
Value of x is -1
The correct first step to solving the inequality is distributing the -4 into the para thesis
8 0
3 years ago
Read 2 more answers
Someone help me please!!!
dusya [7]

Answer:

Its upside down.

Step-by-step explanation:

8 0
3 years ago
Tyler used 17.04 gallons of gas.Maria used 6.2 times as many gallon of gas as Tyler. How many gallons of gas did Maria use?
slava [35]
Tyler (T)= 17.04 gallons
Maria=6.2(T), Maria= 6.2x17.04=105.65 gallons
6 0
3 years ago
Other questions:
  • A fair coin tossed 3 times in a row. What is the probability that heads appear on only the last toss?
    10·2 answers
  • (URGENT)<br> What is the volume of the square pyramid with base edges 4m and height 3m?
    13·1 answer
  • $9500 is invested, part of it at 12% and part of it at 9%. For a certain year, the total yield is $1032.00. How much was investe
    15·1 answer
  • Select a counter-example that makes the conclusion false.
    5·2 answers
  • Which of the following describe an angle with a vertex at E? Check all that apply. A. DEF B. DFE C. FED D. EFD
    12·2 answers
  • I need help i honestly dont get this​
    10·1 answer
  • A map has a scale of 2.4 centimeters equals to 500 miles if two cities are 10 centimeters apart from the map how many miles apar
    11·1 answer
  • What's the distance between the points (7,3) and (7,–8)?
    9·2 answers
  • Please help me
    11·1 answer
  • f a seed is planted, it has a 85% chance of growing into a healthy plant. If 9 seeds are planted, what is the probability that e
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!