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
alexdok [17]
3 years ago
13

Choose the inequality that represents the following graph.

Mathematics
1 answer:
Artemon [7]3 years ago
4 0

Answer:

x ≤ -4

Step-by-step explanation:

There is a closed circle at -4, which requires and equals sign

The line goes to the left, which is less than

x ≤ -4

You might be interested in
Worth 10 points please help me ASAP
Nitella [24]
(2,-2) would be the answer I think
8 0
2 years ago
A quilt is made of 12 squares of equal size. Each square measures 15 cm by 15 cm.
kolezko [41]

Answer:    12    x    15= 180 cuadrados

juas juas juas 180  +   180  = 360


15 x 15 cm = 360

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Area= 169(pie)mm(squared)<br><br> What's the radius and diameter
Natali [406]

You would have to divide by 3.14 to find the radius squared, and to find the diameter, just add the radius plus the radius.
4 0
3 years ago
A sociologist was investigating the ages of grandparents of high school students. From a random sample of 10 high school student
umka2103 [35]

Answer:

(69.8-71.6) -2.101 \sqrt{\frac{8.38^2}{10} +\frac{6.65^2}{10}}= -8.908  

(69.8-71.6) +2.101 \sqrt{\frac{8.38^2}{10} +\frac{6.65^2}{10}}= 5.308  

So then the confidence interval for the difference of means is given by:

-8.908 \leq \mu_M -\mu_F \leq 5.308

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

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

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

\bar X_{M}= 69.8 represent the mean for the age of grandmother

\bar X_{F}= 71.6 represent the mean for the age of grandfather

s_{M}= 8.38 represent the sample deviation for the age of grandmother

s_{F}= 6.65 represent the sample deviation for the age of grandfather

n_M = n_F= 10

Solution to the problem

For this case the confidence interval is given by:

(\bar X_{M} -\bar X_F) \pm t_{\alpha/2} \sqrt{\frac{s^2_M}{n_M} +\frac{s^2_F}{n_F}}

In order to calculate the critical value t_{\alpha/2} we need to find first the degrees of freedom, given by:

df=n_M +n_F-2=10+10-2=18

Since the Confidence is 0.95 or 95%, the value of \alpha=0.05 and \alpha/2 =0.025, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.025,18)".And we see that t_{\alpha/2}=2.101

And replacing we got:

(69.8-71.6) -2.101 \sqrt{\frac{8.38^2}{10} +\frac{6.65^2}{10}}= -8.908  

(69.8-71.6) +2.101 \sqrt{\frac{8.38^2}{10} +\frac{6.65^2}{10}}= 5.308  

So then the confidence interval for the difference of means is given by:

-8.908 \leq \mu_M -\mu_F \leq 5.308

5 0
3 years ago
Please help quick i will give brainlist!!!!!!
ipn [44]

Answer:

a) 75/3=25/1

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Other questions:
  • Help find the answer to what B is.
    15·1 answer
  • R is the midpoint of QS, if QR=2x and RS=x+3, what is RS?
    6·1 answer
  • Timika wants to know the number of millimeters that are in 4.5 inches. What is the correct process for converting 4.5 inches to
    11·2 answers
  • A publishing company produces 15 books in 3 hours. How long would it take to produce 20 books at the same rate?
    14·2 answers
  • 1 in 4 families now owes money on a
    6·1 answer
  • The length of a rectangle it twice it's within. If the perimeter of the rectangle is 30 cm, find its area.
    15·1 answer
  • The length of the line segment containing the points (1,7) and (5,5)
    13·1 answer
  • If triangle RST is an acute triangle, then m∠S must be
    12·2 answers
  • Any help is appreciated!
    5·1 answer
  • E.C. What is the standard equation of a circle with center (h,k) and radius r in the coordinate plane?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!