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
Zepler [3.9K]
3 years ago
6

Solve 2x2 − 12x + 20 = 0. 3 ± i 3 ± 2i 1 ± 2i 2 ± 3i

Mathematics
1 answer:
makkiz [27]3 years ago
7 0
This is the concept of quadratic equations, solving the equation 2x^2-12x+20=0 using the formula we get:
x=[-b+/-sqrt(b^2-4ac)]/(2a)
from our equation, a=2,b=-12 and c=20
x=[-(-12+/-sqrt((-12)^2-4*2*20)]/(2*2)
x=[12+/-sqrt(144-160]/4
x=[12+/-sqrt(-16)]/4
x=[12+/-4i]/4
x=[3+\-i]
the answer is A] 3+/-i
You might be interested in
a gardener spends half an hour to mow and weed the lawn which has a measurement of 24 m × 15 m. He is paid $25 per hour. how muc
Ugo [173]

Answer:

$100

Step-by-step explanation:

Half - a - hour = (24*15) =360 m

one hour payment $25

hour(?) =(48*30) = 1440 m

  1440/ 360 =  4 hours

So, 25*4 =$100

6 0
3 years ago
Question 3. Y=(1/5)^xSketch the graph of each of the exponential functions and label three points on each graph.
STatiana [176]

Given exponential function:

y\text{ = (}\frac{1}{5})^x

Let us obtain three points including the y-intercept so that we can plot the function y = f(x)

When x =0:

\begin{gathered} y\text{ = (}\frac{1}{5})^0 \\ =\text{ 1} \end{gathered}

when x =1:

\begin{gathered} y\text{ = (}\frac{1}{5})^1 \\ =\text{ }\frac{1}{5} \end{gathered}

when x =2:

\begin{gathered} y\text{ = (}\frac{1}{5})^2 \\ =\text{ }\frac{1}{25} \end{gathered}

We have the points : (0, 1), (1, 1/5), and (2, 1/25)

Using these points, let us provide a sketch of the plot of y =f(x). We have the plot as shown below:

5 0
1 year ago
-12 + 3p = 3 <br> what does p equal
Svet_ta [14]

Answer:

p=5

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Ariana bought 5 dozen pears at $36 per dozen . She discovered that 7 were rotten and she sold the rest at $4.50 each . Calculate
GrogVix [38]

Step-by-step explanation:

1 dozen = 12 pears

12 pears = $36

1 pear = 36/12 = $3

Total Cost of Pears = No. of pears x price of 1 pear

= (5x12) x 3

= 60 x 3

= $180

Sale of Pears = Price per pear x (Total Pears bought - Rotten Pears)

= $4.50 x (5x12-7)

= $4.50 x 53

= $238.50

Profit/Loss = Sale of Pears - Total Cost of Pears

= $238.50 - $180

= $58.50

Ariana made a profit of $58.50.

5 0
3 years ago
Read 2 more answers
ANSWER QUICK BESTIES!! ty
anygoal [31]

Answer:

Option B

Step-by-step explanation:

Option A, C and D have x- values that repeat and you cannot have that.

Y values can repeat but not x-values.

Option B has all x values with different y-values

7 0
3 years ago
Read 2 more answers
Other questions:
  • Arc length
    14·1 answer
  • 2x+1&gt;x-(1-x) Solve the ineqiality
    5·1 answer
  • 1. $210.00 increased by 40% is what percent of $210.00? 2. How much money is a $210.00 increased by 40%?
    14·1 answer
  • sharice bought 8 songs that cost 0.79 each. She also bought an album. The total price of these items was 15.21 what was the pric
    11·2 answers
  • What is the sum f 1.57 and 6.88
    14·2 answers
  • Write the equation of the hyperbola with foci at (1, 5) and (7, 5) and with vertices at (2, 5) and (6, 5).
    13·1 answer
  • Brandi sells 20 cookies for $10.00. How much money will she make if she sells 72 cookies?
    8·1 answer
  • Use the Graph of the parabola to fill in the table
    8·1 answer
  • Multiply the bynomials (x+5)+(x+6)
    15·2 answers
  • Factor the greatest common binomial factor from each polynomial
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!