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
deff fn [24]
3 years ago
13

Factor the expression below. 4x2 - 1

Mathematics
1 answer:
Katen [24]3 years ago
7 0
2•1-1/2 is the answe
You might be interested in
a trapezoid has base lengths of 6 and 15 centimeters with an area of 136.5 square centimeters. What is the height of the trapezo
MrRa [10]
•*Ok first let me show you the formula for the Area of the trapezoid.
A=a+b/2 h.(I will be using the letter x for the multiplication sign)
 
*And here is the formula to find the height of a trapezoid
h=2 x A/a+b (2 times the Area over base "a" plus base "b")


*We need to plug in the numbers: h = 2 x 136.5/6+15
*Next, we add the two bases to get 21: 6+15=21 (h=2 x 136.5)  
*Then, divide the total of the two bases (21) from the area to get 6.5: 136.5/21-6.5
*Finally we multiply 2 by 6.5: 2 x 6.5= 13
The height if this trapezoid is 13.

Hope this helps you ☺
3 0
3 years ago
I do not see the mistake. Can someone please help me find it?
nikdorinn [45]
3rd one ( not 20 characters so ASHWDHWHEIUCNEJEIH)
4 0
3 years ago
How many different 6-digit numbers can be formed by arranging the digits in 332345?
Feliz [49]

Answer- 120

Solution-

There are digits to be arranged,they are {3,3,2,3,4,5}. And from those ,3 digits are repeated .

so the total number of distinct number that can be formed = \frac{6!}{3!} = \frac{720}{6} = <em>120</em><em> </em>(ans)


7 0
3 years ago
Four times the square of a certain number increased by 6 times the number equals 108. Find the number
vodomira [7]
-6 and 4.5
So to do this you’ll make an equation x will represent the number so 4x^2+6x=108 so we want the equation to equal 0 so we can solve it to do that you have to subtract 108 from both sides so it ends up being 4x^2+6x-108=0 we want to isolate the x onto one side and division property allows us to divide both sides by 2 the reason it’s two is because 2 is the biggest divisible number that every number in the equation is divisible by so once you divide every number by two you get 2x^2+3x-54=0 now you have to factor cause but since you only have 3x and nothing else to factor with you have to write 3x as a difference so you could do 2x^2+12x-9x-54=0 so you are complicating the problem so you can factor out 2x from the expression so 2x(x+6)- 9(x+6)=0 the 54 got factored because it’s divisible by 9 that 6 is in replace of the 54 cause if you solved it 9x6 is still 54 next factor out x+6 so (x+6) x (2x-9) =0 so one of the two have to equal 0 so right the equations separately x+6=0 minus 6 from both sides and you’ll get x to equal -6 and 2x-9=0 add 9 to both sides and you’ll get 2x=9 divide both sides by 9 and you’ll get x to equal 4.5 when you plug 4.5 and -6 for x the equation works out
3 0
3 years ago
Convert the fraction 5/8 to decimal using long division method
erma4kov [3.2K]
1/8=0.125
0.625*5=0.625
Or
1/2=0.5
0.5/2=1.25
1.25/2=0.125
Which is 1/8
7 0
3 years ago
Other questions:
  • If five different players have to be placed in five different positions on team, how many different ways might his be done
    11·1 answer
  • the sum of three numbers is 85. The second is 7 more than the first. The third is 2 more than four times the second. Find the nu
    10·1 answer
  • Tell me quick please
    9·2 answers
  • Y varies inversely as x . When x=2, y=48. Find y when x=5
    8·1 answer
  • The dollar amount (d) that erin earns varies directly as the number of hours (t) that she works. if she earns $206.25 in 25 hour
    5·1 answer
  • What is the ratio for the volumes of two similar Pyramids, given that the ratio of the edge lengths is 8:3?
    7·2 answers
  • Jane found that 25% of the total number of teenagers surveyed like sandwiches. If 50 teenagers like sandwiches what is the total
    15·2 answers
  • What factors does 28 and 44 have in common
    13·2 answers
  • Three motorcyclists ride around a circular course starting at the same place and the same time. The first passes the starting po
    12·1 answer
  • R. 2 times what number equals 10? )
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!