What’s the correct answer for this?

Answer:   a

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

It would still be 10° because dilation doesn't change angles

Round 38 to the nearest ten. Enter your answer in the box below.

Find the common ration for this geometric sequence 243,27,3,1/2,1/27

How to factor Trinomial?

Do you remember the difference between a row and a column
in Math?

I have the brainy app on my phone, and I have plus on my phone, but when I try to log in on my computer< it says I still need to upgrade, how do I use brainy plus on my computer?

Many fundraisers ask for donations using e-mail and text messages. The paper "Now or Never! The Effect of Deadlines on Charitable Giving: Evidence From Two Natural Field Experiments" ( Journal of Behavioral and Experimental Economics [2016]: 1-10) describes an experiment to investigate whether the proportion of people who make a donation when asked for a donation by e-mail is different from the proportion of people who make a donation when asked for a donation in a text message. In this experiment, 1.32% of those who received and opened an e-mail request for a donation and 7.77% of those who received a text message asking for a donation actually made a donation. Assume that the people who received these requests were randomly assigned to one of the two groups (e-mail or text message) and suppose that the given percentages are based on sample sizes of 2000 (the actual sample sizes in the experiment were much larger).
a. The study described is an experiment with two treatments. What are the two treatments?
b. Use a 90% confidence interval to estimate the difference in the proportions who donate for the two different treatments
c. Is there convincing evidence that the proportion who make a donation is not the same for the two different methods? Carry out a hypothesis test using a significance level of 0.05.
d. Is there convincing evidence that the proportion who make a donation after receiving an email is smaller than the proportion who make a donation after receiving a text message? Carry out a hypothesis test using a significance level of 0.10.

The owner-operator of a hardware store in a Virginia suburb along the banks of the Potomac River wants to learn several things about his customers and his business. Over the past 5 years, he has kept meticulous records on the contact information for his most frequent customers through a point-of-sale information system his cashiers use. He offers attractive discounts on every purchase to customers who have provided their contact information (name, phone number, home address, e-mail address) for inclusion in the database. When the customer provides his/her phone number to the cashier during checkout, the discount is activated in the cash register and all information about the purchase (products, quantities, prices) is captured by the point-of-sale system and stored in the master database. The system tracks the number of check-outs made by database customers vs. check-outs made by customers not in the database. In the past year, 80% of the 50,000 checkouts have been made by customers in the database. The owner-operator wants to survey his customers to learn their level of satisfaction with his business and to learn their attitudes toward certain changes he is contemplating.


Which of the following survey methods would most likely produce a representative sample of the owner's customer population at the least cost:

a. telephone calls to 5,000 randomly selected people in the Virginia suburb where the store is located
b. mailers to 5,000 randomly selected homes in the same zip code as the store
c. e-mails to 5,000 randomly selected customers in the store's database

Which of the following questions on customer satisfaction with the owner's business is unblased:

a. Do you like our store hours during the winter season?
b. How likely is it that you will make your next hardware purchase from our store?
c. Would you buy more from our store if we lowered our prices?
d. Which of our competitors do you buy from when you do not buy from our store?

Which of the following is the best the method for randomly selecting customers for the survey to produce representative results:

a. choose young adults aged 25-40 for the survey
b. choose half men and half women for the survey
c. assign numbers to each customer record and use a random number generator to pick customers for the survey
d. choose customers with last names that begin with a vowel

Which of the following statements is most correct about the minimum size of the sample required for confidence in the results?

a. the minimum size of the sample is 10
b. the minimum size of the sample depends upon the size of the population
c. the minimum size of the sample depends on the level of confidence required in the result
d. the minimum size of the sample depends on the standard deviation of the population

Which of the following statements is most correct about response rates and sample sizes?

a. It is preferable to have a high response rate from a randomly chosen small sample.
b. it is preferable to have a low response rate from a randomly chosen large sample.
c. It is preferable to have a low response rate from a randomly chosen small sample.
d. None of the above statements correctly describe response rates and sample sizes.

A local eat-in pizza restaurant wants to investigate the possibility of starting to deliver pizzas. The owner of the store has determined that home delivery will be successful if the average time spent on the deliveries does not exceed 34 minutes. The owner has randomly selected 23 customers and has delivered pizzas to their homes in order to test if the mean delivery time actually exceeds 34 minutes. Suppose the P-value for the test was found to be 0.0290. State the correct conclusion

I have f(x)=x^2+x+5. Then (f(x)-f(a))/(x-a).

Volume of a sphere in terms of π with a radius of 2

6th grade math help please! :))

Kali has a 666 meter ladder that she wants to use to get her cat out of a tree. She puts the base of the ladder 222 meters away from the base of the tree.

How high into the tree will the ladder reach?
Round your answer to the nearest tenth of a meter.

Two figures are arranged as shown. Which of the following can be used to the area of the figure
shaded light gray?
9
9​

Which of the following expressions could be used to find the sale price of an item that costs d dollars if it is on sale for 30% off?

22. Find the perimeter of the square:
28

Please help ASAP! I will mark Brainliest! Please answer CORRECTLY! No guessing! CHECK ALL THAT APPLY

Answer FAST! This is a HARD question! Good luck

if a punnet of strawberrier weighs 100g
how many punnets would weigh 1 kg

The value of 8 in the hundreds place is how many times the value of the 8 in the tens place

Sophie needs 420 g of flour to bake a cake. Her scales only weigh in ounces. How many ounces of flour does she need? 1 ounce = 25 grams ounces

Find the area of a circle with a diameter of 15 feet

factor completely: 90v + 40

on a piece of paper, graph f(x)= {x if x<2 2 if x>2}

Find the limit of the function by using direct substitution lim (x^2+8x-2) x-> 2

What equations have many solutions
76x+76=76x+76
76x+76=-76x+76
-76x+76=-76x+76
-76x+76=76x+76

The Senate in a certain state is comprised of 58 ​Republicans, 39 ​Democrats, and 3 Independents. How many committees can be formed if each committee must have 3 Republicans and 2 ​Democrats?

What is B H and area of the parallelogram

A submarine is 48 m below sea level, and it descends 28 m.
How far below sea level is it?

Hector invests $20,000 at age 21. He hopes the investment will be worth $200,000 when he turns 40. If the interest compounds continuously, approximately what rate of growth will he need to achieve his goal? Round to the nearest tenth of a percent.

solve for x round to the nearest tenths