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
charle [14.2K]
3 years ago
5

...........................................................................answer this quickly plz .............................

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

Mathematics
2 answers:
dem82 [27]3 years ago
6 0

Answer:

Approximately 12 days.

Step-by-step explanation:

No. of days = 2214.5/(9x21.14)

= 2214.5/190.26

= 11.6

Mamont248 [21]3 years ago
4 0

Answer:

hg

Step-by-step explanation:

hggf

You might be interested in
David and Jillian are playing a board game together. Jillian wants to trade her wool cards for David's ore cards. The double num
Keith_Richards [23]

Answer:

the answer is 62

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The management of a department store is interested in estimating the difference between the mean credit purchases of customers u
Mkey [24]

Answer:

Step-by-step explanation:

1) Point estimate is the difference between the sample means. Therefore,

A point estimate for the difference between the mean purchases of the users of the two credit cards is = 140 - 125 = $15

2) Margin of error = z√(σ²/n1 + σ2²/n2)

Where

z is the z score from the 95% confidence level. From the normal distribution table, z = 1.96

s1 and s2 are standard deviation for both customers respectively.

Standard deviation = √variance

σ1 = √100 = 10

σ2 = √641 = 25.32

Margin of error = 1.96√(10²/64 + 25.32²/49 = 7.5

At 95% confidence, the margin of error is 7.5

3) The confidence interval for the difference of two population means is expressed as point estimate ± margin of error

Confidence interval = 15 ± 7.5

The upper boundary for the confidence interval is

15 - 7.5 = 7.5

The lower boundary for the confidence interval is

15 + 7.5 = 22.5

A 95% confidence interval estimate for the difference between the average purchases of the customers using the two different credit cards is $7.5 to $22.5

4) Since the population standard deviations are known, we would use the formula to determine the test statistic(z score)

z = (x1 - x2)/(√σ1²/n2 + σ2²/n2)

z = (140 - 125)/√10²/64 + 25.32²/49

z = 1.02

The test statistic for an alpha of .05 is 1.02

4 0
3 years ago
Name The constant in the expression <br> 2X^4+3X^3-5X^2-8X+12
Vitek1552 [10]

the constant term is 12

All the other terms have variables attached to them

6 0
3 years ago
If someone has 8 fl. oz. of 16% wine, how many standard drinks has that person consumed?
UkoKoshka [18]

Answer:

2.1 standard drinks

(or 2 if you need to round to the nearest whole number)

Step-by-step explanation:

The ABV (alcohol by volume) percentage is a measure of the amount of pure alcohol (as a percentage) of the total volume of liquid in a drink.

So for 16% wine, this means that 16% of the volume of the wine is pure alcohol.

Therefore, if 16% of 8 fl oz is pure alcohol, this means that 1.28 fl oz of the 8 fl oz is pure alcohol (since 0.16 × 8 = 1.28).

One standard drink ≈ 0.6 fl oz pure alcohol

To calculate the number of standard drinks, divide the total amount of pure alcohol found by the amount in one standard drink:

1.28 ÷ 0.6 = 2.1

Therefore there is approximately 2.1 standard drinks in 8 fl oz of 16% wine.

5 0
2 years ago
What is 8.5% of 70 when you multiply
tigry1 [53]
5.95 is your answer. Have a wonderful day
4 0
3 years ago
Read 2 more answers
Other questions:
  • Is 7x+14 equivalent to 7x-7?
    15·2 answers
  • ppose an airline policy states that all baggage must be box-shaped with a sum of length, width, and height not exceeding 108 in.
    9·1 answer
  • Need help ASAP! Looking for someone to show work, it’s completely fine if you don’t tho!
    8·1 answer
  • Recall the experiment comparing patients 4 weeks after surgery for carpal
    12·1 answer
  • Round to the nearest hundredth (2 decimal places) when necessary
    6·2 answers
  • I NEED THE ANSWER RIGHT NOWWWW
    6·2 answers
  • Find the area of the figure. Round to the nearest tenth if necessary.
    15·2 answers
  • Which are the correct partial products for 54 X 9
    13·1 answer
  • In this unit, you studied a handful of circle theorems. Research to find a circle theorem that wasn’t presented in this unit and
    13·1 answer
  • F + 25 = 50<br><br> f = <br><br> please help
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!