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
xxTIMURxx [149]
3 years ago
15

Can you help with this?​

Mathematics
2 answers:
poizon [28]3 years ago
8 0

Answer: 10/3 or 3 1/3

Step-by-step explanation:

ankoles [38]3 years ago
6 0

Answer:2/15

Step-by-step explanation:

You might be interested in
Which of the folowing pairs of circles have i as a common internal target select all that apply
MakcuM [25]

Answer: pic of the question?

Step-by-step explanation:

6 0
4 years ago
Use the information provided to determine a 95% confidence interval for the population variance. A researcher was interested in
Leno4ka [110]

Answer:

The 95% confidence interval for the population variance is (8.80, 32.45).

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for the population variance is given as follows:

\frac{(n-1)\cdot s^{2}}{\chi^{2}_{\alpha/2}}\leq \sigma^{2}\leq \frac{(n-1)\cdot s^{2}}{\chi^{2}_{1-\alpha/2}}

It is provided that:

<em>n</em> = 20

<em>s</em> = 3.9

Confidence level = 95%

⇒ <em>α</em> = 0.05

Compute the critical values of Chi-square:

\chi^{2}_{\alpha/2, (n-1)}=\chi^{2}_{0.05/2, (20-1)}=\chi^{2}_{0.025,19}=32.852\\\\\chi^{2}_{1-\alpha/2, (n-1)}=\chi^{2}_{1-0.05/2, (20-1)}=\chi^{2}_{0.975,19}=8.907

*Use a Chi-square table.

Compute the 95% confidence interval for the population variance as follows:

\frac{(n-1)\cdot s^{2}}{\chi^{2}_{\alpha/2}}\leq \sigma^{2}\leq \frac{(n-1)\cdot s^{2}}{\chi^{2}_{1-\alpha/2}}

\frac{(20-1)\cdot (3.9)^{2}}{32.852}\leq \sigma^{2}\leq \frac{(20-1)\cdot (3.9)^{2}}{8.907}\\\\8.7967\leq \sigma^{2}\leq 32.4453\\\\8.80\leq \sigma^{2}\leq 32.45

Thus, the 95% confidence interval for the population variance is (8.80, 32.45).

4 0
3 years ago
Solve for x.<br> A) -7<br> C) 6<br> B) 9<br> D) 10
Mekhanik [1.2K]

Answer:

A

Step-by-step explanation:

The segment BC  joining the midpoints of 2 sides of the triangle is

Half the length of the third side, that is

x + 31 = 2(x + 19)

x + 31 = 2x + 38 ( subtract x from both sides )

31 = x + 38 ( subtract 38 from both sides )

- 7 = x → A

5 0
3 years ago
Read 2 more answers
Joesl's father is 45. He is 15 years older than twice joe's age. How old Is joe?
tresset_1 [31]
Joe is 15, 45-15=30 30/2=15
6 0
4 years ago
the zeros of a parabola are -4 and 2, and (6, 10) is a point on the graph. which equation can be solved to determine the value o
natka813 [3]
Sure this question comes with a set of answer choices.

Anyhow, I can help you by determining one equation that can be solved to determine the value of a in the equation.

Since, the two zeros are - 4 and 2, you know that the equation can be factored as the product of (x + 4) and ( x - 2) times a constant.  This is, the equation has the form:

y = a(x + 4)(x - 2)

Now, since the point (6,10) belongs to the parabola, you can replace those coordintates to get:

10 = a (6 + 4) (6 - 2)

Therefore, any of these equivalent equations can be solved to determine the value of a:

10 = a 6 + 40) (6 -2)

10 = a (10)(4)

10 = 40a
7 0
3 years ago
Read 2 more answers
Other questions:
  • Is 2/4 the same as 2 divide by 4?
    11·2 answers
  • When Arjun makes hot cocoa, he adds 20ml of chocolate syrup for every 3 ounces of hot water. Arjun's brother, Eli, adds 45mL of
    12·1 answer
  • Determine if the event listed is independent or dependent.
    6·1 answer
  • If a meteor hits the Earth and forms a crater that measures 10 miles in diameter, what is the area of the crater formed?
    6·1 answer
  • At a fair, the Pick-A-Duck game has 119 ducks to choose from, but only 17 of the ducks will win a prize. What is the probability
    14·1 answer
  • Convert the fraction to a decimal. 4 6/25
    11·1 answer
  • Write one polynomial for each description
    15·2 answers
  • For the parallelogram find the value of x,y,and z
    15·1 answer
  • There were a total of 483 sheep and goats on the farm. When ⅔ of the sheep were sold, the number of the sheep left was equal to
    7·2 answers
  • If the scale is 2inches = 5miles. What is the amount of miles in 4 inches?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!