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MATH SOLVE
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Which expression is equivalent to x2 − x − 6 x2 + 2x − 15 ? A) x + 3 x + 5 B) x + 2 x + 5 C) x + 3 x − 3 D) x + 2 x − 3
General
4 months ago
Supposeanairportmetaldetectorcatchesaperson with metal 99% of the time. That is, it misses detecting a person with metal 1% of the time. Assume independence of people carrying metal. What is the probability that the first metal-carrying person missed (not detected) is among the first 50 metal-carrying persons scanned?
General
4 months ago
At a particular university, 44% of the students are freshmen, 25% are sophomores, 16% are juniors, and 15% are seniors. Of the freshmen, 35% have not declared a major. Of the sophomores, 25% have not declared a major. Of the juniors, 10% have not declared a major, and of the seniors, 3% have not declared a major. Of the students who have not declared majors, what percent (rounded to the nearest percent) are freshmen?A. 35%B. 65%C. 44%D. 15%
General
4 months ago
Anne and John are solving a multiple choice exam in preparation for their GRE exams. Assume that the number of mistakes Anne makes (X) can be modeled via a Poisson distribution with λX = 1 and the number of mistakes John makes (Y) can be modelled via a Geometric distribution with p = 0.4 (so note this involves assuming that with probability one John makes at least one mistake since in this case P(Y ≥ 1) = 1). Further assume these are independent. Find P(X + Y ≤ 2).
General
4 months ago
Assume that a national fitness study reports that 10%10% of millenials exercise daily. Suppose that a researcher surveys a random sample of 250250 millenials regarding their daily exercise habits. Assume that ????X is a binomial random variable that represents the number of millenials in the sample who exercise daily. Compute the mean ????μ and standard deviation ????σ of the sampling distribution of ????X . Report ????μ as a whole number and ????σ as a decimal precise to two decimal places.
General
4 months ago
Find the 91st term of the arithmetic sequence 28, 8, -12, ...28,8,−12,...
General
4 months ago
Determine if the following probability experiment represents a binomial experiment. If not, explain why. If the probability experiment is a binomial experiment, state the number of trials, n. An experimental drug is administered to 90 randomly selected individuals, with the number of individuals responding favorably recorded. Select the correct choice below and, if necessary, fill in the answer box to complete your answer. A. Yes, because the experiment satisfies all the criteria for a binomial experiment, nequals nothing. (Type a whole number.) B. No, because the experiment is not performed a fixed number of times. C. No, because the trials of the experiment are not independent because the probability of success differs from trial to trial. D. No, because there are more than two mutually exclusive outcomes for each trial.
General
4 months ago
Select the number in which the digit 6 is ten times the valueof the digit 6 in 1.836. Mark all that apply.@ 0.1640 9.568® 3.658186.9© 56.82Ⓡ 1.836
General
4 months ago
Yanik Company's delivery truck, which originally cost $84,000, was destroyed by fire. At the time of the fire, the balance of the Accumulated Depreciation account amounted to $57,000. The company received $48,000 reimbursement from its insurance company. The gain or loss as a result of the fire was
General
4 months ago
Television viewing reached a new high when the Nielsen Company reported a mean daily viewing time of 8.35 hours per household (USA Today, November 11, 2009). Use a normal probability distribution with a standard deviation of 2.5 hours to answer the following questions about daily television viewing per household.A) What is the probability that a household views television between 5 and 10 hours a day?B) How many hours of television viewing must a household have in order to be in the top 3% of all television viewing households?C) What is the probability that a household views television more than 3 hours a day?
General
4 months ago
Four students are verifying that x2 + x– 12 = (x – 3)(x + 4). Their conclusions are presented in the table. Which student correctly verified that x2 + x – 12 = (x – 3)(x + 4)? Damien Lauryn Rico Latisha
General
4 months ago
Karma was given some birthday money. She puts the money in an account. Every month after that, she deposits the same amount of money.The equation that models this situation is y = 75x + 60, where y is the amount of money in the account and x is the number of deposits.What does the y-intercept mean in this situation? A.She was given $75 for her birthday. B.She puts $60 in the account each month. C.She was given $60 for her birthday. D.She puts $75 in the account each month.
General
4 months ago
In △ABC, the coordinates of vertices A and B are A(1,−1) and B(3,2).For each of the given coordinates of vertex C, is △ABC a right triangle?Select Right Triangle or Not a Right Triangle for each set of coordinates.C(0,2) C(3,−1) C(0,4)
General
4 months ago
The weight of a person on or above the surface of the earth varies inversely as the square of the distance the person is from the center of the earth. A particular person weighs 192 pounds on the surface of the earth and the radius of the earth is 3900 miles. Determine the equation that relates weight, W, to the distance from the center of the earth, d, for this person.
General
4 months ago
The measure of ∠DAB equals 125º. The measure of ∠ACB equals 30º.What is m∠ABC?
General
4 months ago
NEED ANSWER FAST WILL GIVE BRAINLIEST Object A and Object B are two objects in motion. Given the graph of Object A and the equation y = 103x of Object B, which of the two moving objects has greater speed and by what factor? (round to nearest hundredth) A) Object A by a factor of 1.19 B) Object B by a factor of 1.19 C) Object A by a factor of 1.53 D) Object B by a factor of 1.53 https://gyazo.com/07ff9a89e2c24f3c54dc80e46222e07a
General
4 months ago
Drag the tiles to the boxes to form correct pairs. Match each term to its definition. Tiles theorem a given definition assumed to be true axiom a statement that requires proof a logical argument showing that a theorem is true proof
General
4 months ago
Which equation applies the associative property of multiplication? −5/12⋅(6/5⋅1/3)⋅92=(−5/12⋅6/5)⋅(1/3⋅9/2) −6/7⋅8/11⋅1/3=8/11⋅(−6/7)⋅1/3 (−7/8⋅2/5)+(−7/8⋅3/5)=−7/8⋅(2/5+3/5) (−1/4−5/3)−3/5=−1/4−(5/3−3/5)
General
4 months ago
A parent function and transformed function are shown: Function y=^3_/-x y= -(0.4)^3_/-x-2Which of the following describes the graph of the transformed function compared with the parent function? Select all that apply. reflected over the x-axis translated 2 units left translated 2 units right compressed by a factor of 0.4 stretched by a factor of 0.4 translated 2 units up translated 2 units down
General
4 months ago
Consider the system of equations.y = 3x + 2 y = − 2/3 x − 4Explain why these particular equations can be graphed immediately.
General
4 months ago
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