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
Sladkaya [172]
3 years ago
5

Find the greatest four digit square number by division method​

Mathematics
1 answer:
Agata [3.3K]3 years ago
7 0
9999 is largest 4 digit number, and 100^2 is 10000, or 1 greater than the largest 4 digit number. This means that the closest square root of the largest perfect square is most likely 99. So 99^2 (9801)is the largest perfect square of four digits.
You might be interested in
a fish tank is 24 inches long. 16 inches deep and 10 inches tall. The tank is filled halfway. How much water is in the tank?
alex41 [277]

Answer:

Step-by-step explanation:

4 0
3 years ago
Karyn proofreads 15 pages in 2 hours for $40. What is her proofreading rate in pages per hour?
vladimir1956 [14]
Hey there,
2 hours = 15 pages
1 hour = 15 / 2
           = 7.5 pages
15 pages = $40
1 page = $40 / 15
            = $2.666666666666667
7.5 pages= $2.666666666666667 x 7.5
               = $20

Hope this helps :))

~Top
4 0
3 years ago
A newspaper published an article about a study in which researchers subjected laboratory gloves to stress. Among 215 vinyl​ glov
pickupchik [31]

Answer:

z=\frac{0.7-0.07}{\sqrt{0.385(1-0.385)(\frac{1}{215}+\frac{1}{215})}}=13.42  

p_v =P(Z>13.42)\approx 0  

So the p value is a very low value and using any significance level given \alpha=0.01 we se that p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can conclude that vinyl gloves have a greater virus leak rate than latex gloves at 1% of significance.

Step-by-step explanation:

Data given and notation  

n_{V}=215 sample of vinyl gloves selected

n_{L}=215 sample of latex gloves selected

p_{V}=0.7 represent the proportion of vynil gloves with leaked viruses

p_{L}=0.07 represent the proportion of latex gloves with leaked viruses

z would represent the statistic (variable of interest)  

p_v represent the value for the test (variable of interest)

Concepts and formulas to use  

We need to conduct a hypothesis in order to check if the vinyl gloves have a greater virus leak rate than latex gloves , the system of hypothesis would be:  

Null hypothesis:p_{V} \leq p_{L}  

Alternative hypothesis:p_{V} > \mu_{L}  

We need to apply a z test to compare proportions, and the statistic is given by:  

z=\frac{p_{V}-p_{L}}{\sqrt{\hat p (1-\hat p)(\frac{1}{n_{V}}+\frac{1}{n_{L}})}}   (1)

Where \hat p=\frac{X_{V}+X_{L}}{n_{V}+n_{L}}=\frac{0.7+0.07}{2}=0.385

Calculate the statistic

Replacing in formula (1) the values obtained we got this:  

z=\frac{0.7-0.07}{\sqrt{0.385(1-0.385)(\frac{1}{215}+\frac{1}{215})}}=13.42  

Statistical decision

Since is a one right tailed test the p value would be:  

p_v =P(Z>13.42)\approx 0  

So the p value is a very low value and using any significance level given \alpha=0.01 we se that p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can conclude that vinyl gloves have a greater virus leak rate than latex gloves at 1% of significance.

3 0
3 years ago
Read 2 more answers
What are the solutions of the equation (x + 2)2 + 12(x + 2) - 14 = 0? Use u substitution and the quadratic formula to solve.
Y_Kistochka [10]

X^2+4x+4+12x+24-14=0

x^2+16x+14=0

x= -16 ± √(16)^2-4(1)(14) /2(1)

=-16± √200   /2

-16 ± 2√50    /2

-16 ± 10√2   /2

-8 ± 5√2  

6 0
3 years ago
Read 2 more answers
......................
Viktor [21]

Answer:

............................

Step-by-step explanation:

8 0
2 years ago
Other questions:
  • Help Please
    13·2 answers
  • "A movie data base claims that the average length of movies is 117 minutes. A researcher collected a random sample of 160 movies
    5·1 answer
  • Can someone help me, please and thank you? I'll give BRAINLEST to the person who gets it right!!! Please have explained how to g
    13·2 answers
  • Carly is a catcher on the school softball team. By the end of the season she played 45% of the 40 games the team played. In how
    5·2 answers
  • Multiply & simplify: (3x + 4)(x + 1)
    13·2 answers
  • Help help help please using the elimination solve this​
    9·1 answer
  • HELPPPPPPP I'LL GIVE BRAINLY <br><br> 3x + 5 ≤ -13
    7·2 answers
  • Identify the values of m and b of the linear function y = mx + b, graphed below. ​
    11·1 answer
  • Write an equation in slope-intercept form to represent the linear Relationships on the graph.
    8·1 answer
  • A triangle has two sides of lengths 6 and 9. What value could the length of the third side be? Check all that apply.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!