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
son4ous [18]
3 years ago
13

Use the quadratic formula to find the solutions to the quadratic equation below 2x^2-5x+5=0

Mathematics
1 answer:
Serggg [28]3 years ago
5 0

Answer:

x = (5 + i sqrt(15))/4 or x = (5 - i sqrt(15))/4

Step-by-step explanation:

Solve for x:

2 x^2 - 5 x + 5 = 0

Hint: | Using the quadratic formula, solve for x.

x = (5 ± sqrt((-5)^2 - 4×2×5))/(2×2) = (5 ± sqrt(25 - 40))/4 = (5 ± sqrt(-15))/4:

x = (5 + sqrt(-15))/4 or x = (5 - sqrt(-15))/4

Hint: | Express sqrt(-15) in terms of i.

sqrt(-15) = sqrt(-1) sqrt(15) = i sqrt(15):

Answer: x = (5 + i sqrt(15))/4 or x = (5 - i sqrt(15))/4

You might be interested in
Find the mean, median, mode, and range of the data 10, 13, 7, 6, 9, 4, 6, 3, 5​
elena-s [515]
Median is 6 range is 9 mode is 6 and mean is 7
7 0
2 years ago
If sin theta = -0.7660, which of the following represents an approximate value of tan theta, for 180 degrees < theta < 270
Elis [28]
We have that
sin ∅=-0.7660

the sin ∅ is negative
so 
∅ belong to the III or IV quadrant
but
180°< ∅ < 270°
hence
∅ belong to the III quadrant
sin ∅=-0.7660
sin² ∅+cos² ∅=1
cos² ∅=1-sin² ∅------> cos² ∅=1-(0.7660)²-----> 0.4132
cos ∅=√0.4132-----> cos ∅=0.6428
the value of cos ∅ is negative-------> III quadrant
cos ∅=-0.6428

tan ∅=sin ∅/ cos ∅----> tan ∅=-0.7660/-0.6428----> tan ∅=1.1917

the answer is
tan ∅ is 1.1917
4 0
3 years ago
The graph of a function f(x) passes through the following points: (0,0), (1, -2), (2,0) Which of the following could be f(x)?
Sveta_85 [38]

Answer:

f(x)= 2x^2-4x

Step-by-step explanation:

3 0
2 years ago
Which graph represents the solution set of the equation 3y - x - 9 = 0?​
Arisa [49]

Answer:

Linear Graph

Step-by-step explanation:

7 0
3 years ago
Casey and her two friends made $54 selling lemonade in their neighborhood. They will share their money equally. How much money w
cluponka [151]
To find out how much money Casey and her two friends will each get, we simply need to divide the total amount of income by the amount of people receiving a part of it

54 / 3 = 18

Casey and her two friends each got $18 from their lemonade stand.
Hope that helped! =)
7 0
3 years ago
Other questions:
  • A square-shaped park has an area of 324 yd2. What are the dimensions of the park? I need a step by step answer.
    12·1 answer
  • An airplane flew for 8 hours at an airspeed of x miles per hour (mph), and for 7 more hours at 325 mph. If the average airspeed
    9·1 answer
  • How much is 8 hundreds plus 3 tens
    11·2 answers
  • Xiao's teacher asked him to rewrite the sum 60+90 as the product of the GCF of the two numbers and a sum. Xiao's wrote 3(20 + 30
    7·1 answer
  • The area of a circle is 1441 m2.<br> What is the diameter of the circle?
    15·1 answer
  • Trevor thinks that left-handed pitchers in a baseball league are more likely to strike out batters than right-handed pitchers ar
    13·1 answer
  • How is 80.106 written in expanded form?<br> Pls answer !!
    12·1 answer
  • Calculus hw, need help asap with steps.
    10·1 answer
  • 10 brainlies!!!!! help with this question
    14·1 answer
  • In the diagram below, if AB = 25, AC = 15, and BD = 5, then find the length of DC.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!