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
vova2212 [387]
3 years ago
15

Find the solutions to the equation below . Check all that apply . X^2-4=0

Mathematics
2 answers:
KatRina [158]3 years ago
5 0

Answer:

there are 2 solutions in total

Step-by-step explanation:

x^2-4=0

x^2=4

x= ±2<em>i</em>

KatRina [158]3 years ago
4 0

Answer:

x=±2

Step-by-step explanation:

x²-4=0

x²-2²=0

(x+2)(x-2)=0

either x+2=0,x=-2

or x-2=0,x=2

You might be interested in
What is the answer to x2+4x +3 =0?
adell [148]
(x+1) (x+3)
the zeroes of the function are negative 1 and negative 3
8 0
3 years ago
Phones-R-Us charges $16.95 per month and $0.05 per text message. Awesome Wireless charges $22.95 per
Dima020 [189]

Answer:

S \leq 200

Step-by-step explanation:

Given

Phone R-Us= $16.95 + $0.05 per SMS

Awesome Wireless = $22.95 + $0.02 per SMS

Required

Determine the number of SMS such that Awesome Wireless is greater or equal to Phone R-Us

Represent the SMS with S

For Phone R-Us, we have:

SMS = 16.95 + 0.05S

For Awesome Wireless, we have:

SMS = 22.95 + 0.02S

For Awesome Wireless is greater or equal to Phone R-Us, we have:

22.95 + 0.02S \geq 16.95 + 0.05S

Collect Like Terms

0.02S - 0.05S \geq 16.95 - 22.95

-0.03S \geq -6

Solve for S

\frac{-0.03S}{-0.03} \geq \frac{-6}{-0.03}

S \leq 200

<em>Hence: for Awesome Wireless to cost more or equal to Phone R-Us, the number of SMS must not exceed 200</em>

4 0
3 years ago
A classic car is now selling for $2000 less than two times its original price. If the selling price is now $20,000, what was the
Otrada [13]

Answer:

$11,000

Step-by-step explanation:

Because,

20,000 + 2000 = 22,000

22,000 / 2 = 11,000

3 0
3 years ago
2x+14= -21-5x<br> Need to find out what x is but a step by step explanation please
adoni [48]
Notice how on both sides of the equation there is one coefficient (number being multiplied by x) and a constant (just a plain number). You want all constants to be on one side and all coefficients on the other. He’s how do to that:
2x+14=-21-5
I am choosing that all constants will be on the right side, so I will do the inverse operation of any constant on the left side to remove it. Here, a constant on the left side is 14. I will subtract 14 from both sides of the equation. Positive 14 minus 14 is zero, so it cancels out and removes it.
2x+14-14 = -21-5x
2x = -35-5x
See how the 14 is now gone? The equation looks much simpler now. Okay next, you can see that there is a coefficient on the “constant side” that I’ve chosen, so I am going to remove that. Negative 5 plus positive 5 equals zero. Do this on both sides of the equation.
2x+5x = -35-5x+5x
7x = -35
Now the equation is just two numbers. All that is left to do is divide by the last coefficient, 7, in this case.
7x/7 = -35/7
x = -5
8 0
1 year ago
Read 2 more answers
A tree grows in height by 21% per year. It is 2m tall after one year. After how many years will the tree be over 20m tall?
mariarad [96]
20/45 hope it helps have a good day
7 0
3 years ago
Read 2 more answers
Other questions:
  • if I play golf only on Saturday and jog every fourth day. if I play golf and jog on Saturday, how many days will it be before I
    5·1 answer
  • you organize a garage sale. you have $30 at the beginning kf the sale . you earn an average of $20 per hour . write an equation
    5·2 answers
  • If the test is worth 100 points and each homework assignment is work 20% of the test, how many points may be earned during this
    11·1 answer
  • In the trivia bowl each finalist must answer four questions correctly. Each question is worth twice as much as the question befo
    6·1 answer
  • What’s the answer? Some say 9, others say 1
    8·2 answers
  • Write the​ slope-intercept equation of the function f whose graph satisifies the given conditions.
    14·2 answers
  • a teacher is experimenting with computer- based instruction. In which situation could the teacher use a hypothesis test for a di
    10·1 answer
  • The first person to get the right with an explanation gets Brainliest<br><br> Find the value of X?
    5·2 answers
  • En tu cuaderno realiza la conversión de los siguientes decimales a fracciones.<br>a) 0.250 :<br>​
    13·2 answers
  • A square has an area of 369.01m squared number.work out the perimeter of the square.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!