11/25x-7/25= what is the answer

1.Solve the following system of equations:

Yuri [45]

C. infinitely many solutions

7 0

3 years ago

Sean is comparing dog food prices.At pet foods store,the total weight of a bag of dog food varies directly with the number of ba

12345 [234]

Answer:

Step-by-step explained :

7 0

3 years ago

The mass of a block of stone is 6400 kg. If the block has a volume of 0.8 m cubed, what is its density? Remember, density is mas

vovangra [49]

The question is asking for mass/unit of volume.
Therefore the density of the material would be 6400kg/0.8m^3. You then want to change the bottom into a 1 by multiplying the top and bottom both by 10/8. You now have 8000kg/m^3, which is the solution.

$8000 \frac{kg}{m^3}$

7 0

3 years ago

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

4 years ago

What is the height of the cone below? a cone with base of 5 inches squared and volume of 45 inches cubed. 3 in. 9 in. 27 in. 75

Georgia [21]

The cone is a three dimensional shape, and the value of the height of the cone is 27 inches

<h3>How to determine the height?</h3>

The given parameters are:

Shape = Cone
Volume, V = 45 in^3
Base area, B = 5 in^2

The volume of the cone is calculated using:

$V = \frac13 Bh$

So, we have:

$45 = \frac13 * 5 * h$

Divide both sides by 5

$9 = \frac13 * h$

Multiply both sides by 3

h = 27

Hence, the value of the height of the cone is 27 inches