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
Dafna11 [192]
2 years ago
14

what are the solutions of 4x^2-8x+5=0 A. x=2+i/2 or x=2-i/2. B. x=1+i/2 or x=1-i/2 C. x=1+i or x=1-i D. x=2+i or x=2-i

Mathematics
1 answer:
rewona [7]2 years ago
5 0
The correct answer is Option A.
You might be interested in
One half of a number (use x) is equal to 8 less than the same number
Step2247 [10]

Answer:

16

Step-by-step explanation:

(1/2)x= x-8

x= 2x-16

x-2x= -16

x=16

5 0
3 years ago
Translate the sentence into an equation.
alekssr [168]

Answer:

6x + 7 = 8

Step-by-step explanation:

Let x represent the unknown number.

Translating the word problem into an algebraic expression, we have;

6x + 7 = 8

To find the value of x;

6x = 8 - 7

6x = 1

x = 1/6

3 0
3 years ago
For a given population of high school seniors, the Scholastic Aptitude Test (SAT) in mathematics has a mean score of 500 with a
tresset_1 [31]

Answer:

The probability that a randomly selected high school senior's score on mathematics part of SAT will be

(a) more than 675 is 0.0401

(b)between 450 and 675 is 0.6514

Step-by-step explanation:

Mean of Sat =\mu = 500

Standard deviation = \sigma = 100

We will use z score over here

 What is the probability that a randomly selected high school senior's score on mathe- matics part of SAT will be

(a) more than 675?

P(X>675)

Z=\frac{x-\mu}{\sigma}\\Z=\frac{675-500}{100}

Z=1.75

P(X>675)=1-P(X<675)=1-0.9599=0.0401

b)between 450 and 675?

P(450<X<675)

At x = 675

Z=\frac{x-\mu}{\sigma}\\Z=\frac{675-500}{100}

Z=1.75

At x = 450

Z=\frac{x-\mu}{\sigma}\\Z=\frac{450-500}{100}

Z=-0.5

P(450<X<675)=0.9599-0.3085=0.6514

Hence the probability that a randomly selected high school senior's score on mathematics part of SAT will be

(a) more than 675 is 0.0401

(b)between 450 and 675 is 0.6514

6 0
2 years ago
What is 3 times 1/3 and subtract 5
lukranit [14]
3* ( 1/3 -5)= -14 hope this helps
7 0
2 years ago
Read 2 more answers
A particular employee arrives at work sometime between 8:00 a.m. and 8:30 a.m. Based on past experience the company has determin
Gala2k [10]

Answer:

0.3333 = 33.33% probability that the employee will arrive between 8:15 a.m. and 8:25 a.m.

Step-by-step explanation:

A distribution is called uniform if each outcome has the same probability of happening.

The uniform distributon has two bounds, a and b, and the probability of finding a value between c and d is given by:

P(c \leq X \leq d) = \frac{d - c}{b - a}

A particular employee arrives at work sometime between 8:00 a.m. and 8:30 a.m.

We can consider 8 am = 0, and 8:30 am  = 30, so a = 0, b = 30

Find the probability that the employee will arrive between 8:15 a.m. and 8:25 a.m.

Between 15 and 25, so:

P(15 \leq X \leq 25) = \frac{25 - 15}{30 - 0} = 0.3333

0.3333 = 33.33% probability that the employee will arrive between 8:15 a.m. and 8:25 a.m.

8 0
3 years ago
Other questions:
  • What Is the nth term of this sequence 7 10 13 16
    8·1 answer
  • Alexandra paid 7 to park her car for 3 hours at the parking garage. The garage charges a constant hourly parking rate.
    10·1 answer
  • How many times does the graph of the quadratic function f(x) = x² - 9 intercept the x-axis?
    10·1 answer
  • Can someone help me please ?
    14·1 answer
  • Where is the vertex of the equation?y = x2 – 18x + 80
    5·1 answer
  • Nellie is analyzing a quadratic function f(x) and a linear function g(x). Will they intersect?
    10·1 answer
  • 10x10 I need help don’t tell my mom
    15·2 answers
  • At a concession stand, a pickle and two bags of chips costs a total of $3.25. Three pickles and four bags of chips costs a total
    15·1 answer
  • PLEASE ANSWER ASAP: Dianna can carry up to 15lbs in her backpack. Her lunch weighs 1 lb, her gym shoes weigh 2 lbs, and her book
    8·1 answer
  • Points E, C, F are collinear and point C is in between. If EF = 14in and EC-9in, how long is CF?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!