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
Daniel [21]
2 years ago
15

HELP, answer both questions please !!! I will mark as brainlest!!!

Mathematics
2 answers:
yawa3891 [41]2 years ago
8 0

Answer:

D and B

Step-by-step explanation:

the angles subtract and the other starts and loops

Ludmilka [50]2 years ago
3 0
First one is a because if you add 40 and 70 you get 110
You might be interested in
Bruce bought two books one book cost $4.00 more than three times the other . Together, the two books cost him $72
VikaD [51]
One is $12 the other is $72
7 0
3 years ago
The Ohio Department of Agriculture tested 203 fuel samples across the state
Rus_ich [418]

Answer:

\hat p = \frac{14}{105}= 0.133

And that represent the proportion of failures.

The confidence interval for the mean is given by the following formula:  

\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}

If we replace the values obtained we got:

0.133 - 2.58\sqrt{\frac{0.133(1-0.133)}{105}}=0.0475

0.133 + 2.58\sqrt{\frac{0.133(1-0.133)}{105}}=0.2185

The 99% confidence interval would be given by (0.0475;0.2185)

Step-by-step explanation:

Previous concept

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".  

The population proportion have the following distribution

p \sim N(p,\sqrt{\frac{p(1-p)}{n}})

Solution to the problem

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 99% of confidence, our significance level would be given by \alpha=1-0.99=0.01 and \alpha/2 =0.005. And the critical value would be given by:

z_{\alpha/2}=-2.58, z_{1-\alpha/2}=2.58

The proportion estimated would be:

\hat p = \frac{14}{105}= 0.133

And that represent the proportion of failures.

The confidence interval for the mean is given by the following formula:  

\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}

If we replace the values obtained we got:

0.133 - 2.58\sqrt{\frac{0.133(1-0.133)}{105}}=0.0475

0.133 + 2.58\sqrt{\frac{0.133(1-0.133)}{105}}=0.2185

The 99% confidence interval would be given by (0.0475;0.2185)

3 0
3 years ago
Read 2 more answers
PLEASE HELPPPP!!!!!!
Sloan [31]

Step-by-step explanation:

y=kx

say that y is the original prince and x is the sale price

15=k(10)

15/10=k

3/2=k

you can check with the next problem to check if it is the same

25=k(20)

25/20=k

5/4=k

so you take 5/4-3/2=-1/4 so the constant is -1/4

Hope that helps :)

8 0
3 years ago
Question 7 50 points
meriva

Answer:

1f 2×4 -3׳ 12k is divided by × - 3 the remainder is 21 find the value of k

8 0
3 years ago
Read 2 more answers
Just answer the question below in the screenshot it!! Good luck!
8_murik_8 [283]

Answer:

it would be c

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • four people equally shared 3/4 of a whole pizza. what fractional part of the whole pizza does each person receive?
    8·1 answer
  • Reginald is distributing n boxes of paper to the copy rooms in an office building. If he places 6 boxes of paper in each copy ro
    7·1 answer
  • 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
  • Someone please help me
    9·1 answer
  • Its due in like 13 min thx
    11·1 answer
  • Annie wants to create a right triangle with side lengths 12 centimeters, 35 centimeters, and
    13·1 answer
  • Let a(x) be the amount of money remaining on Hillary's gift card after purchasing x apps on her phone.
    8·2 answers
  • What describes a statistical sample?
    11·2 answers
  • Question 4 options:
    15·1 answer
  • Use the intercepts to graph the equation. y = -6 x-intercept: Enter as a coordinate: such as (a, b). If there is no x-intercept,
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!