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
uysha [10]
3 years ago
6

Factor completely: x2-4

Mathematics
1 answer:
Lelechka [254]3 years ago
5 0

Answer:

(x+2)(x-2)

Step-by-step explanation

x times x equals x^2, 2 times x equals 2x, -2 times x equals -2x, and 2 times -2 equals -4. If you add that up, the x-values cancel out, leaving the x^2 and the -4. (This explanation is working it backwards which is the easiest way IMO)

You might be interested in
The value of a car purchased for $20,000 decreases at a rate of 12% per year. What will be the value of the car after 3 years?
DENIUS [597]

Answer:

The answer is A

Step-by-step explanation:

$20,000 • .12= $2,400

$2,400 • 3= $7,200

$20,000 - $7,200= $12,800

$12,800

4 0
3 years ago
Are these ratios equivalent? 12 friends : 15 strangers AND 6 friends : 14 strangers
meriva

Answer:

No

Step-by-step explanation:

12:15 can be simplified to 4:5

6:14 can be simplified to 3:7

These two are not equivalent to eachother

6 0
3 years ago
12. Find the surface area of each figure to the nearest tenth.
Zolol [24]

Answer:

  12a. 471.2 cm²

  12b. 60 m²

Step-by-step explanation:

Part A.

The surface area of each figure is the sum of the end area and the lateral area.

  <u>cylinder</u>

  S = (2)(πr²) +2πrh = 2πr(r +h)

  S = 2π(5 cm)(5 cm +10 cm) =150π cm² ≈ 471.2 cm²

__

  <u>triangular prism</u>

  S = (2)(1/2)bh + PL . . . . b=triangle base; h=triangle height; P=triangle perimeter; L=length of prism

  S = (4 m)(1.5 m) + ((4 + 2·2.5) m)(6 m) = (6 + 54) m² = 60 m²

_____

Part B.

Surface area is useful in the real world wherever products are made from sheets of material or wherever coverings are applied.

Carpeting or other flooring, paint, wallpaper are all priced in terms of the area they cover, for example.

The amount of material used to make containers in the shapes shown will depend on the area of these containers (and any material required for seams).

6 0
3 years ago
What is an equation of the line that passes through
lys-0071 [83]

Answer:

B

Step-by-step explanation:

For the perpendicular of an equation you need to flip the fraction and change the sign from positive to negative or if it's negative to positive. 3/2 is changed to -2/3 which when multiplied by -2 gives you 4/3 and 4/3+5/3 is equal to 3.

3 0
3 years ago
In the Diagram Lines M And N are Parallel M &lt; 2 = 150 degress, Find the Measure of the following angles
Snezhnost [94]

<4= 150
<6=150
because the angels are parallel <4 & <2 are the exact same measurements and because 6 is perpendicular to  <4 & <2 thus making it also 150 degrees


5 0
3 years ago
Other questions:
  • The table below shows the distance d(t) in meters that an object travels in t seconds:
    14·1 answer
  • Solve the equation<br><br>n/2 = -7​
    15·2 answers
  • Simplify the following: (74) (6/4)
    10·2 answers
  • 15/16 - 7/32 Also find the sum or difference <br> A.13/32 <br> B.23/32<br> C 3/4
    12·1 answer
  • Write an equation for the line that is parallel to the given line and passes through the given point.
    14·1 answer
  • • 1.Find the scale factor of a blueprint if the scale is 3 inches = 6 feet.
    5·2 answers
  • Select the correct answer. What are the roots of this quadratic equation? 3x^2 + 10 = 4x
    8·1 answer
  • a random sample of size 100 is taken from a population described by the proportion P equals 0.60 using the appropriate normal tr
    13·1 answer
  • Please take a look at the picture. Please write your answer with an explanation.
    9·1 answer
  • Which property will we need to use to solve the equation?<br><br> x - 10 = 5
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!