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MATH SOLVE
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Pleasee! Which expression is equivalent to the given expression? Assume the denominator does not equal zero.
General
2 months ago
Graph the following lines and write the equation in slope-intercept form. d Through the point (2,−4) with y-intercept of −2.
General
2 months ago
employee had been infected with a disease and was contagious when he had attended a work event. He had close contact with all 40 other meeting attendees (assume all were exposed) Shortly after, 22 people developed symptoms of the disease. Of the 22, that developed symptoms 4 had to be hospitalized because of severe symptoms. All 40 attendees (besides the original employee) later submitted to a blood test and it was later found that 33 had been infected with the disease. Calculate the following (do not include the index case):(a) Inefectivity of the desease = ____(b) Pathogenicity of the desease = ____(c) Virulence of the desease = ____
General
2 months ago
Use the following cell phone airport data speeds (Mbps) from a particular network. Find the percentile corresponding to the data speed 1.4 Mbps. 0.1 0.1 0.3 0.3 0.3 0.4 0.5 0.5 0.5 0.6 0.6 0.6 0.7 0.7 0.9 1.2 1.2 1.4 1.4 1.5 2.2 2.4 2.5 2.7 2.7 3.4 3.5 3.7 4.7 5.2 5.3 5.3 5.5 5.7 6.4 7.4 7.8 8.4 8.8 9.6 10.3 11.1 11.6 11.8 12.3 12.7 13.5 13.8 14.6
General
2 months ago
Which statements are true about triangle QRS? Select three options.The side opposite ∠Q is RS.The side opposite ∠R is RQ.The hypotenuse is QR.The side adjacent to ∠R is SQ.The side adjacent to ∠Q is QS.
General
2 months ago
Playing sports related to job pay. Does participation in youth and/or high school sports lead to greater wealth later in life? This was the subject of a recent Harris POLL (March 2015). The poll found that 15% of adults who participated in sports now have an income greater than $100,000. In comparison, 9% of adults who did not participate in sports have an income greater than $100,000. Consider a random sample of 25 adults, all of whom have participated in youth and/or high school sports. a. What is the probability that fewer than 20 of these adults have an income greater than $100,000? b. What is the probability that between 10 and 20 of these adults have an income greater than $100,000? c. Repeat parts a and b, but assume that none of the 25 sam- pled adults participated in youth and/or high school sports.
General
2 months ago
Suppose that in a senior college class of 500500 students, it is found that 215215 smoke, 252252 drink alcoholic beverages, 215215 eat between meals, 124124 smoke and drink alcoholic beverages, 7878 eat between meals and drink alcoholic beverages, 9191 smoke and eat between meals, and 4646 engage in all three of these bad health practices. If a member of this senior class is selected at random, find the probability that the student (a) smokes but does not drink alcoholic beverages; (b) eats between meals and drinks alcoholic beverages but does not smoke; (c) neither smokes nor eats between meals.
General
2 months ago
From past experience, the organization knows that about 20% of all potential donors will agree to give something if contacted by phone. They also know that of all people donating, about 5% will give $100 or more. On average, how many potential donors will she have to contact until she gets her first $100 donor?
General
2 months ago
A dolphin show is scheduled to start at 9:00 A.M., 9:30 A.M., and 10:00 A.M. Once the show starts, the gate will be closed. A visitor will arrive at the gate at a time uniformly distributed between 8:30 A.M. and 10:00 A.M. Determine a) The cumulative distribution function of the time (in minutes) between 8:30 A.M. and arrival.
General
2 months ago
The lengths of plate glass parts are measured to the nearest tenth of a millimeter. The lengths are uniformly distributed with values at every tenth of a millimeter starting at 590.2, and continuing through 590.9. Determine the mean and variance of the lengths. (a) mean (in tenths of millimeters) Round your answer to two decimal places (e.g. 98.76). (b) variance (in tenths of millimeters2) Round your answer to three decimal places (e.g. 98.765).
General
2 months ago
Y/7 +6=11 two step Equation
General
2 months ago
When designing a study to determine this proportion, what is the minimum number of drivers you would survey to be 95% confident that the population proportion is estimated to within 0.05?
General
2 months ago
A homeowner estimates that it will take him 13 days to roof his house. A professional roofer estimates that he could roof the house in 4 days. How long will it take if the homeowner helps the roofer?
General
2 months ago
Which are the solutions of x2 = –5x + 8? StartFraction negative 5 minus StartRoot 57 EndRoot Over 2 EndFraction comma StartFraction negative 5 + StartRoot 57 EndRoot Over 2 EndFraction StartFraction negative 5 minus StartRoot 7 EndRoot Over 2 EndFraction comma StartFraction negative 5 + StartRoot 7 EndRoot Over 2 EndFraction StartFraction 5 minus StartRoot 57 EndRoot Over 2 EndFraction comma StartFraction 5 + StartRoot 57 EndRoot Over 2 EndFraction StartFraction 5 minus StartRoot 7 EndRoot Over 2 EndFraction comma StartFraction 5 + StartRoot 7 EndRoot Over 2 EndFraction
General
2 months ago
Please respond to the question below in your own words with proper explanationsand use of math vocabulary.CRQ #13: Don works in home construction. He determined that thefunction t(A)=144A/9.252 gives the total number of 9 in. tiles needed to coveran area of A square feet, when spacing the tiles a quarter inch apart.Find t(400) and explain what it means.Please help me
General
2 months ago
Rewrite in standard form of a circle x^2-6x+y^2-4y-12=0
General
2 months ago
Several years ago, 43% of parents who had children in grades K-12 were satisfied with the quality of education the students receive. A recent poll asked 1 comma 085 parents who have children in grades K-12 if they were satisfied with the quality of education the students receive. Of the 1 comma 085 surveyed, 466 indicated that they were satisfied. Construct a 90% confidence interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed.
General
2 months ago
The birth rate of a population is b(t) = 2500 e0.021t people per year and the death rate is d(t)= 1470 e0.019t people per year, find the area between these curves for 0 ≤ t ≤ 10. (Round to the nearest integer.)What does this area represent? (Attention! You are allowed only two submissions for this answer.)A. the number of births over a 10-year periodB. the number of years it takes to increase the population by 10,000,000C. the number of years it takes to increase the population by 10D. the change in population over a 10-year periodE. the number of deaths over a 10-year period
General
2 months ago
Don works in home construction. He determined that the function t(A)=144a/9.25^2 gives the total number of 9 in. tiles needed to cover an area of A square feet, when spacing the tiles a quarter inch apart. Find t(400) and explain what it means.
General
2 months ago
In how many ways can a photographer at a wedding arrange six people in a row, including the bride and groom, if a) the bride must be next to the groom? b) the bride is not next to the groom? c) the bride is positioned somewhere to the left of the groom?
General
2 months ago
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