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
jasenka [17]
2 years ago
13

Stephanie saw an ad in the paper that her favorite kind of perfume was on sale for 25% off. Her favorite perfume costs $20 per b

ottle. How much will she save on the bottle of perfume?​
Mathematics
2 answers:
monitta2 years ago
7 0

Answer:

she would save $5 on the perfume.

Natalija [7]2 years ago
5 0

Answer:

$5

Step-by-step explanation:

You might be interested in
10+10 is the same as 11+11<br> do you understand?
Inga [223]

Answer:

wow

Step-by-step explanation:

lol idle b Betsey e wet get hectic

3 0
2 years ago
Read 2 more answers
Allied Corporation is trying to sell its new machines to Ajax. Allied claims that the machine will pay for itself since the time
kvasek [131]

Answer:

z(s) is in the acceptance region. We accept H₀  we did not find a significantly difference in the performance of the two machines therefore we suggest not to buy a new machine

Step-by-step explanation:

We must evaluate the differences of the means of the two machines, to do so, we will assume a CI  of 95%, and as the interest is to find out if the new machine has better performance ( machine has a bigger efficiency or the new machine produces more units per unit of time than the old one) the test will be a one tail-test (to the left).

New machine

Sample mean                  x₁ =    25

Sample variance               s₁  = 27

Sample size                       n₁  = 45

Old machine

Sample mean                    x₂ =  23  

Sample variance               s₂  = 7,56

Sample size                       n₂  = 36

Test Hypothesis:

Null hypothesis                         H₀             x₂  -  x₁  = d = 0

Alternative hypothesis             Hₐ            x₂  -  x₁  <  0

CI = 90 %  ⇒  α =  10 %     α = 0,1      z(c) = - 1,28

To calculate z(s)

z(s)  =  ( x₂  -  x₁ ) / √s₁² / n₁  +  s₂² / n₂

s₁  = 27     ⇒    s₁²  =  729

n₁  = 45    ⇒   s₁² / n₁    = 16,2

s₂  = 7,56   ⇒    s₂²  = 57,15

n₂  = 36     ⇒    s₂² / n₂  =  1,5876

√s₁² / n₁  +  s₂² / n₂  =  √ 16,2  + 1.5876    = 4,2175

z(s) = (23 - 25 )/4,2175

z(s)  =  - 0,4742

Comparing z(s) and  z(c)

|z(s)| < | z(c)|  

z(s) is in the acceptance region. We accept H₀  we did not find a significantly difference in the performance of the two machines therefore we suggest not to buy a new machine

The very hight dispersion of values s₁ = 27 is evidence of frecuent values quite far from the mean

3 0
3 years ago
Researches notice a grey whale cruising at a depth of 233 feet below sea level. It rises 73 feet and then comes up another 40 fe
Rus_ich [418]

Answer:130ft

Step-by-step explanation:

233-63=170. 170-40=130ft.

3 0
3 years ago
Read 2 more answers
You want to spin blue. Does it matter which spinner you spin? Explain
Ulleksa [173]

Answer:

No, they both have a 2/6 (1/3) chance of spinning blue.

6 0
2 years ago
How can you write 1,360/200 as a repeating decimal?
Alisiya [41]
1360/200

13.6/2

6.8

It is a finite decimal, but if you want repeating, there are zeroes that follow, like so:

6.8000000000000 . . . (and on to infinity)
6 0
3 years ago
Other questions:
  • Newton uses a credit card with a 18.6% APR, compounded monthly, to pay for a cruise totaling $1,920.96. He can pay $720 per mont
    6·1 answer
  • Write the value of underlined digit 5165874
    6·1 answer
  • PLEASE HELP MEEEEE!!!!!!!
    11·1 answer
  • -9+6-(-2)= Evaluate the expression
    15·1 answer
  • Refer to the sample data for​ pre-employment drug screening shown below. If one of the subjects is randomly​ selected, what is t
    13·1 answer
  • A prism is a three..........shape with the same.........all the way through <br>Fill the gaps
    8·1 answer
  • There is a 25% chance that Dane will make a three-point shot during a basketball game. A random-number generator generated 10 se
    11·1 answer
  • The graphs of four quadratic equations are shown. Identify the number of real solutions of each equation by
    12·1 answer
  • Find the future value if £7400 is<br> invested for 6 years at 12.8% p.a.<br> Total
    15·1 answer
  • To solve the equation x + 5 = 3x - 4, Jasper graphs the equations f (x) = x + 5 and g(x) = 3x – 4. What is the solution to the e
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!