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Related Questions
what is the solution to 0.2 (4x-8)=0.4(12-2x)
Answers
Explanation:
Start with:
0.2(4x-8)=0.4(12-2x)
simply:
0.8x-1.6=4.8-0.8x
add 0.8 to both sides to cancel each other out:
1.6x-1.6=4.8
Add 1.6 to each side:
1.6x=6.4
Divide by 1.6:
X=4
Hope this helps!
Ms. Rogers asked 15 piano students how many hours of practice they put in each week. The list shows the data she recorded.
6,6,7,7,7,8,8,8,8,8,9,9,9,10,10
Which statement is true?
A.The data is skewed to the left.
B. The data is skewed to the right.
C. The data is symmetrical.
D. The skew of the data cannot be determined.
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Answer:
D
Step-by-step explanation:
A student that goes to class can not put 10 hours of practice per day.
Answer:
The data is skewed to the left.
Step-by-step explanation:
A test for syphilis gives a positive result with probability 0.98 when tested on a person who has the disease. The test gives a negative result with probability 0.9 when tested on a person who does not have the disease. Assume that 3% of a society has the disease, and compute the following probabilities in the order they are asked. Note that for each individual there are two disease status(disease, no disease) and two types of test results(positive, negative). (a) (0.5 point) Compute the probability that an individual has the disease and has a positive test result. Explain your computation. (b) (0.5 point) Compute the probability
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Answer:
The probability that an individual has the disease and has a positive test result is:
9.8%.
Step-by-step explanation:
Probability of a true positive result for a test of syphilis = 0.98 or 98%
Probability of a false negative result for a test of syphilis = 0.02 or 2% (100 - 98)
Probability of a true negative result for a test of syphilis = 0.9 or 90%
Probability of a false negative result for a test of syphilis = 0.1 or 10% (100 - 90)
Therefore, the probability that an individual has the disease and has a positive test result = 0.98 * 0.1 = 0.098 = 9.8%
Corey Steinbruner is the marketing director for a new vitamin supplement and he wants to place ads in two magazines: Sports Illustrated and Men's Health. Corey estimates that each one-page ad in Sports Illustrated will be read by 4 million people and costs $2000 and each one-page ad in Men's Health will be read by 1 million people and costs $1000. Corey does not want to budget more than $14,000 on advertising and wants to place at least 3 ads in Sports Illustrated and at least 4 ads in Men's Health. a) Let LaTeX: xx be the number of ads in Sports Illustrated and LaTeX: yy be the number of ads in Men's Health. Write the objective function (with quantities in millions) to find the maximum number of readers reached by the ads.
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Answer:
Step-by-step explanation:
From the given information:
x = number of ads in sports illustrated
y = number of ads in Man's health
Thus, the total ads read by z = (4x +y) million people
The objective function to maximize Z (millions) is:
Z = 4x + y
To determine x & y; constraint to,
x ≥ 3, y ≥ 4
Budget constraint: 2000x + 1000y ≤ 14000
By approaching the graphically
If we draw the line x = 3 , y = 4
Then;
2000x + 1000y = 14000
2x + y = 14
Corner points are A (3,4), B(5,4), C(3,8)
At A(3,4):
Z = 4(3) + 1 (4) = 16
At B(5,4):
4(5) + 1 (4) = 24
At C(3,8):
4(3) + 1(8) = 20
Thus, Z = 24 million. x = 5, y = 4
Therefore;
they should place 5 ads in sports illustrated.
4 ads in man's health to maximize the number of 24 million readers.
A varsity boy's basketball team has a ratio of seniors to juniors that is 7:4. The varsity girl's basketball team has a ratio of seniors to juniors that is 3 to 2. If each team has 12 juniors, which team has more seniors?
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Answer:
The varsity boys team
Step-by-step explanation:
Mike and Breanna like to run after swim practice each day. Usually they run the same distance, x miles. Today, however, they ran different
distances.
• Mike ran at 7 miles per hour and ran 2 more miles than usual.
• Breanna ran at 6 miles per hour and ran 1 more mile than usual.
Complete the table to show each person's distance and rate, which could be used to create rational equation relating their distance, rate, and
time
Distance
Rate
Mike
Breanna
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Answer:
Step-by-step explanation: i got it right :) hopefully you get it in time!
How do you calculate run time and speed?
32 min * 8 min per mi = 4 miles How to calculate run time. Multiply your pace by your distance; If the pace is 9.5 minutes per mile and you run 3 miles: 9.5 min per mi × 3 mi = 28.5 minutes = 28 minutes, 30 seconds How to calculate running speed. Divide your run distance by your run time.
What do you do to calculate average speed?
choose one point on the line.choose another point on the line.find the time difference between the points.find the distance differences between the points.divide the differences in the distance by the difference in time.Learn more about average speed here https://brainly.com/question/5147964
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I really need help. It would mean a lot ❤️!
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Answer: The domain has to be x and the range y. But for independent and dependent variable I can't help. So srry. The picture doesn't show the work. Have a nice day :)
pls helppppppppppppppp
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Answer:
4 seems to be it
Step-by-step explanation:
need help I don’t understand this.
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Ted likes to run long distances. He can run 20 \text{ km}20 km20, start text, space, k, m, end text in 959595 minutes. He wants to know how many kilometers (k)(k)left parenthesis, k, right parenthesis he will go if he runs at the same pace for 285285285 minutes.
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Answer:
im looking for the anwser
Step-by-step explanation:
Pablo is binging his favorite TV show right before he has to go into work and two hours before he has to go in for his next
shift. Assuming it takes about 20 minutes for pablo to get ready, and each episode his 25 minutes long, how many
episodes can pablo watch before he has to begin getting ready?
A. Six episodes
B. Five episodes
C. Four episodes
D. Seven episodes
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Answer:
b
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
This year Rachel watched 65 movies she thought that 26 of them were very good of the movies she watched what percentage did she think we’re very good
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Answer:
40%
Step-by-step explanation:
26×100=2600÷65=40
40%×65=26
If the contractor has 40 cubic yards of dirt to haul and a budget of $1000, which hauling company should she hire? Explain or show your reasoning.
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To earn a prize sally had to sell at least 9 out of the 20 candy bars for the band fundraiser what percentage of the candy bars did she need to sell ?
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Answer:
45%
trust me i took this test before
Step-by-step explanation:
I need help please with step by step it would help me a lot
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Answer:
Domain: (-infinity, +infinity) since you can pick any x values.
Range: [0, +infinity) since it does not go below the x axis.
Step-by-step explanation:
The graph is a parabola given by [tex]y=x^2[/tex]
lets pick a few x values:
x = 1 gives us y = 1^2, which = 1
x = -1 gives us y = (-1)^2, which = 1
The parabola's domain is any x value as it extends to infinity.
For its range, you can see that it does not go below the x axis at x = 0. Therefore, the range of the parabola is from [0, infinity]
A vendor bought 100 g of garlic for 20 from a wholesaler. He then sold it at a gain of 10%. Findthe S.P. of 10 g of garlic for the vendor.
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Answer:
2.2
Step-by-step explanation:
10% of 20 equals 2
10% of 100g equals 10g
22 = 110% 22/10= 2.2
therefore the S.P. of 10 g of garlic is 2.2
2×2 write the correct answer below
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Answer:
4 :-)))))))) have a wonderful day!
wirte the fractional coefficient for 1 1/4
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pls help nmn po bukas na pasahan
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Step-by-step explanation:
yan na po yung answer .....................................
12. A quality control procedure at a manufacturing facility involves selecting 5 items at random from a large batch, and then accepting the entire batch if at least 3 of the selected items pass inspection. If in reality 80% of all items produced would individually pass inspection, what is the probability that the batch will be accepted
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Answer:
The probability is 0.9421
Step-by-step explanation:
Here, we want to calculate the probability that the batch will be accepted
For it to be accepted, 3,4 or 5 of the items would pass inspection
let p be the probability of a single item
passing the inspection
This probability is 80% = 0.8
Let q be the probability of failing inspection = 2-0.8 = 0.2
The Bernoulli approximation of the probability distribution for 3 passing the inspection out of five will be;
5 C 3 0.8^3 0.2^2 = 0.2048
Next we calculate for 4 out of the five
That will be
5 C 4 0.8^4 0.2 = 0.4096
Finally we calculate for all 5
5 C 5 0.8^5 0.2^0 = 0.32768
So the probability that the batch will be accepted will be;
0.32768 + 0.4096 + 0.2048 = 0.94208
Using the binomial distribution, it is found that there is a 0.9421 = 94.21% probability that the batch will be accepted.
For each item, there are only two possible outcomes, either they pass inspection, or they do not. The probability of an item passing inspection is independent of any other item, hence the binomial distribution is used to solve this question.
What is the binomial distribution formula?The formula is:
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
The parameters are:
x is the number of successes.n is the number of trials.p is the probability of a success on a single trial.In this problem:
5 items are selected, hence [tex]n = 5[/tex].80% of all items produced would individually pass inspection, hence [tex]p = 0.8[/tex].The probability that the batch will be accepted is:
[tex]P(X \geq 3) = P(X = 3) + P(X = 4) + P(X = 5)[/tex]
In which:
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 3) = C_{5,3}.(0.8)^{3}.(0.2)^{2} = 0.2048[/tex]
[tex]P(X = 4) = C_{5,4}.(0.8)^{4}.(0.2)^{1} = 0.4096[/tex]
[tex]P(X = 5) = C_{5,5}.(0.8)^{5}.(0.2)^{0} = 0.3277[/tex]
Then:
[tex]P(X \geq 3) = P(X = 3) + P(X = 4) + P(X = 5) = 0.2048 + 0.4096 + 0.3277 = 0.9421[/tex]
0.9421 = 94.21% probability that the batch will be accepted.
You can learn more about the binomial distribution at https://brainly.com/question/24863377
A cookie factory uses 3 bags of flour in each batch of cookies. The factory used 5 2/3 bags of flour yesterday. How many batches of cookies did the factory make?
Write answer as a fraction or as a whole or mixed number.
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Two parallel lines are cut by transversal x and a transversal Y so that x and y intersect at point Q as shown. Wong constructs the following argument : A) Reason 1: an alternating exterior angel with one angle in the triangle ...etc
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Answer:
A
Step-by-step explanation:
equation of a line in slo[e-intercept form given the slope = 6 and it passes through the point (1, 8)
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Answer:
math way
Step-by-step explanation:
a cube with the number 1,2, 3, 4, 5 and 6; what is the probability of getting an even number?
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Step-by-step explanation:
answer is one and half
Determine the measure of x? Please include the way you got the answer as well please
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Answer:
x = 16°
Step-by-step explanation:
The three internal angles of the triangle are:
180° - 91° = 89° (angles in a straight line)
180° - 105° = 75° (angles on a straight line)
x = x (vertical angles are congruent)
x + 89 + 75 = 180 (sum of interior angles of a ∆)
x + 164 = 180
x = 180 - 164 (subtraction property of equality)
x = 16°
Dawn purchased 6 quarts of motor oil for $14.12. What is the Unit Price per quart rounded to
the nearest cent?
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Answer:
$2.35 per quart (rounded to nearest cent)
Step-by-step explanation:
6 quarts --- $14.12
1 quart --- [tex]\frac{1}{6}[/tex] × $14.12 = $2.35 (rounded to nearest cent)
What fraction best represents 5x2/3
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Answer:
Maybe 5 2/3
Step-by-step explanation:
the relationship between altitude and the boiling point of a water and liquid is in the new year at an altitude of 8000 feet the liquid boils at 204.4 degrees Fahrenheit
at now altitude of 4300 feet ,the liquid boils at 208.84 degrees Fahrenheit. write an equation given the boiling point B of the liquid in degrees Fahrenheit, in terms of altitude a, in feet. What is the boiling point of a liquid at 2500 ft?
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Answer:
Boiling B would probaly Have
a huge impact on the answer
Step-by-step explanation:
y=-|x+3| domain and range
Answers
Answer:
the domain is that x is a set of real numbers.
the range is y ≤ -3
Step-by-step explanation:
y = -|x + 3|
y is either positive or equal to zero.
Now, x is all real numbers because any value of x used will yield a valid value of y.
Thus, we can say that the domain is that x is a set of real numbers.
Now, for the range:
The minus sign in front of the absolute value indicates that the function has a maximum value.
Thus, the range is y ≤ -3
Claude owns a store. Every year, he pays
O sales tax
O corporate tax
O marginal tax
O personal property tax
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Answer:
B
Step-by-step explanation:
Claude owns a store. Every year, he pays corporate tax. Option B is correct.
Claude owns a store. Every year, he pays _____.
Black space to be filled from the following option,
A. sales tax B. corporate tax C. marginal tax D. personal property tax
A corporate tax is a tax levied on the net gain of an enterprise that is taxed at the commodity level in a particular mark. Net gain for corporate tax is commonly the financial statement of net gain with transformations and may be defined in detail in the tax system of each country.
Since the store owner mostly pays the corporate tax besides there, sales tax is paid by the company owners, marginal tax is also paid by the production companies, and personal property tax is paid by any person.
Thus, Claude owns a store. Every year, he pays corporate tax. Option B is correct.
Learn more about corporate tax here:
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