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
patriot [66]
3 years ago
10

A store is offering 20% discount on all items

Mathematics
2 answers:
Tom [10]3 years ago
6 0

Answer: $22.50

Step-by-step explanation:

original price = p

20% discount = 0.8

sale price = 18

p x 0.8 = 18

p = 18/0.8 = 22.50

pochemuha3 years ago
3 0
$21.60 I’m pretty sure
You might be interested in
las diferencias existentes entre espacios de población ( regiones, áreas de salud, municipios) respecto a condiciones de vida ,
solmaris [256]
I just need points u don’t know what to put so fidgdbdjdudvbdjdgdbdjdvdndjdgsndkdjbddbdnnddndndj
6 0
2 years ago
The length of a rectangle is 1 inch less than twice the width. the area is 21 inches^2 what is the length?
ale4655 [162]
Hi.

Formula for area: A = 2l + 2w, where l is the length and w is the width.

Given information:
• l = 2w - 1
• A = 21 in^2

We can plug in our values accordingly and solve for w.

A = 2l + 2w
21 = 2(2w - 1) + 2w
21 = 4w - 2 + 2w
23 = 6w - 2
23 = 6w
3.83 = w

Plug 3.83 for w into 2w - 1 to find length.

2(3.83) - 1
7.66 - 1
6.66

Finally, check your work by plugging your values into the original equation.

21 = 2(6.66) + 2(3.83)
21 = 13.32 + 7.66
21 = 20.98

Answer:
The length is approximately 6.66 inches.
4 0
3 years ago
May I have some help?
Sveta_85 [38]

Answer: 152

Step-by-step explanation: rep me if I’m wrong

4 0
3 years ago
Read 2 more answers
The prostate-specific antigen (PSA) test is a simple blood test to screen for prostate cancer. It has been used in men over 50 a
Ugo [173]

The question is incomplete. I am writing the complete question below:

The prostate-specific antigen (PSA) test is a simple blood test to screen for prostate cancer. It has been used in men over 50 as a routine part of a physical exam, with levels above 4 ng/mL indicating possible prostate cancer. The test result is not always correct, sometimes indicating prostate cancer when it is not present and often missing prostate cancer that is present. Suppose that these are the approximate conditional probabilities of a positive (above 4 ng/ml) and negative test result given cancer is present or absent.

                                    Positive Result                 Negative Result

Cancer Present                   0.21                                       0.79

Cancer Absent                    0.06                                      0.94

In a large study of prostate cancer screening, it was found that about 6.6% of the population has prostate cancer.

What is the probability that the test is positive for a randomly chosen person from this population? (Enter your answer to five decimal places.)

P(Positive test) =

Answer:

P(Positive Result) = 0.0699

Step-by-step explanation:

We are given that 6.6% of the population has prostate cancer. So,

P(Cancer Present) = 0.066

P(Cancer Absent) = 1 - 0.066 = 0.934

From the given conditional probability table, we have:

P(Positive Result | Cancer Present) = 0.21

P(Positive Result | Cancer Absent) = 0.06

We need to find the probability that the result is positive. It can be either that the result is positive and cancer is present or the result is positive and the cancer is absent. So,

P(Positive Result) = P(Positive Result∩Cancer Present) + P(Positive Result∩Cancer Absent)

                             = P(Positive Result | Cancer Present)*P(Cancer Present) + P(Positive Result | Cancer Absent)*P(Cancer Absent)

                             = (0.21)*(0.066) + (0.06)*(0.934)

                             = 0.01386 + 0.05604

P(Positive Result) = 0.0699

5 0
3 years ago
You use 4 gallons of water on 30 plants in your garden. At that rate, how much water will it take to water 45 plants?
4vir4ik [10]

4 / 30 = .13

.13 • 45 = 6 gallons of water

7 0
3 years ago
Read 2 more answers
Other questions:
  • Donna received a $90 gift card for a coffee store. She used it in buying some coffee that cost $7.24 per pound. after buying the
    6·2 answers
  • PLZZZZZZZZZZZZZZZ HELP ME FAST
    13·1 answer
  • Compute the radius of the circle with a circumference of<br> 109.9 millimeters.
    8·1 answer
  • What’s the answer for this
    9·1 answer
  • Given the plane efh in the diagram which points are collinear
    5·1 answer
  • Ax-by/c =d solve for x
    15·1 answer
  • What is the distance from L to M?<br> A. 10 units<br> B. 14 units<br> C. 100 units<br> D. 2 units
    11·1 answer
  • Can you figure this out? Math kills me!
    12·2 answers
  • Which part of the expression 2(3+4)is the sum of two terms
    14·1 answer
  • What is the shortest horizontal shift of a sine curve that will turn it into a cosine curve?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!