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
garik1379 [7]
3 years ago
15

Of the five quadratics listed below, four of them have two distinct roots. The fifth quadratic has a repeated root. Find the val

ue of the repeated root.
-x^2 + 18x + 81
3x^2 - 3x - 168
x^2 - 4x - 4
25x^2 - 30x + 9
x^2 - 14x + 24
Mathematics
1 answer:
musickatia [10]3 years ago
6 0

Answer: 3/5

Step-by-step explanation: The fourth quadratic in the list is the square of a binomial:

25x^2 - 30x + 9 = (5x - 3)^2

Therefore, the repeated root of this quadratic is the solution to 5x - 3=0, which is 3/5

You might be interested in
Suppose that the mean score of a class of 32 students was 74. the 19 male students in the class had a mean score of 70. what was
andrew-mc [135]
Mean = sum of values / number of values
74 = x/32
2368 = x

70 = y/19
1330 = y

mean for female students = (2368 - 1330)/(32-19) = 79.85
5 0
3 years ago
Order these numbers from least to greatest: -3.8, 3<br> 3.-4, 0.
NeTakaya
The answer would be,
0, -4, -3.8, 3.3
8 0
3 years ago
Select the correct answer.
tensa zangetsu [6.8K]

Answer:

7^1/3 * y^1/3

Step-by-step explanation:

(7y) ^ 1/3

We know that (ab) ^c = a^c * b^c

7^1/3 * y^1/3

7 0
3 years ago
Read 2 more answers
A high school athletic department bought 40 soccer uniforms at a cost of $4,000. After soccer season, they returned some of the
Gekata [30.6K]
$60 is the answer to this question
6 0
3 years ago
Read 2 more answers
If the inspection division of a county weights and measures department wants to estimate the mean amount of
Amanda [17]

If inspection department wants to estimate the mean amount with 95% confidence level with standard deviation 0.05 then it needed a sample size of 97.

Given 95% confidence level, standard deviation=0.05.

We know that margin of error is the range of values below and above the sample statistic in a confidence interval.

We assume that the values follow normal distribution. Normal distribution is a probability that is symmetric about the mean showing the data  near the mean are more frequent in occurence than data far from mean.

We know that margin of error for a confidence interval is given by:

Me=z/2* ST/\sqrt{N}

α=1-0.95=0.05

α/2=0.025

z with α/2=1.96 (using normal distribution table)

Solving for n using formula of margin of error.

n=(z/2ST/Me)^{2}

n=(1.96*0.05)^{2} /(0.01)^{2}

=96.4

By rounding off we will get 97.

Hence the sample size required will be 97.

Learn more about standard deviation at brainly.com/question/475676

#SPJ4

The given question is incomplete and the full question is as under:

If the inspection division of a county weights and measures department wants to estimate the mean amount of soft drink fill in 2 liters bottles to within (0.01 liter with 95% confidence and also assumes that standard deviation is 0.05 liter. What is the sample size needed?

7 0
2 years ago
Other questions:
  • 34.04 as a mixed number
    8·1 answer
  • How do you prove that AM=1/2AB if what is given is M is the midpoint of line AB? 7 steps.
    8·1 answer
  • F=(Lt)/d solve for L
    9·2 answers
  • The perimeter of a rectangle is 24 feet. The length is 3 feet less than twice the width. Which of the following systems would be
    6·1 answer
  • Please answer 60 points worth
    12·1 answer
  • The end points of diameter BD in a circle form an angle with point C. what is the measure of &lt; BCD ?
    11·2 answers
  • Need help again, I hate this lol
    15·2 answers
  • "Taylor's Toys" produced 600 remote control cars in two colors. For blue cars they produced 60 more than 3 times as many orange
    8·1 answer
  • Find the Area and Perimeter of a rectangle where length and width are given as 12 and 8 cm respectively.​
    8·2 answers
  • To make a shirt 2 whole number 1/2m of cloth is required. how many shirts can be made with 70 m of cloth.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!