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1. How many solitions does this equation have -4(5-3x)=12x+202. How many solutions does this equation have 3x+7(x+1)=2(6x+5)-2
General
2 months ago
Need help finding equation
General
2 months ago
-30=9x-3 solve for x show all steps please
General
2 months ago
Find the slope of the line through the given points: (-1,2) and (-5,10)
General
2 months ago
Help please! I need to write 4y =-3x + 12 in standard form, find the y-intercept of the previous equation, as an ordered pair, and find the x-intercept of the previous equation, but I forgot how. I need the answer asap! Thank you!
General
2 months ago
A padlock has the digits 0 through 9 arranged in a circle on its face. A combination for 0 1 2 3 4 6 5 7 8 9 this padlock is four digits long. Because of the internal mechanics of the lock, no pair of consecutive numbers in the combination can be the same or one place apart on the face. For example 0-2-7-1 is a valid combination, but neither 0-4-4-7 (repeated digit 4) nor 3-0-9-5 (adjacent digits 0-9) are permitted. How many combinations are possible?
General
2 months ago
Which terms best describe sales tax? Check all that apply.directindirectregressiveprogressiveproportional
General
2 months ago
According to Harper's Index, 55% of all federal inmates are serving time for drug dealing. A random sample of 20 federal inmates is selected. (a) What is the probability that 11 or more are serving time for drug dealing? (Round your answer to three decimal places.) (b) What is the probability that 2 or fewer are serving time for drug dealing? (Round your answer to three decimal places.) (c) What is the expected number of inmates serving time for drug dealing? (Round your answer to one decimal place.)
General
2 months ago
You want to compare the variation of heights of Econ 202 (population 1) and Econ 203 (population 2) students. You used a random sample of 48 Econ 202 students and found a variance of 16 inches, while a sample of 63 Econ 203 students had a variance of 14 inches. If you test whether the variances of the two populations are equal, the test statistic will have a value of: Note. You should NOT change the way how the populations are labeled for this question. A. 0.9 B. 1.14 C. 1.56 D. 0.76
General
2 months ago
Thirty percent of all customers who enter a department store will make a purchase. Suppose that 6 customers enter the store and that these customers make independent purchase decisions. a. Find the probability that exactly 5 customers make a purchase b. Find that probability that at least 3 customers make a purchase c. Find the probability that two or fewer customers make a purchase d. Find the probability that at least one customer makes a purchase. e. As the manager of the department store, how should store associates persuade customers who enter the store to make a purchase
General
2 months ago
The loads carried by an elevator are found to follow a normal distribution with a mean weight of 1812 lbs, and a standard deviation of 105.3 lbs. In which interval centered about the mean does the load lie, in 95% of all cases? A) [1606, 2018] B) [1606, 1812] C) [1812, 2018] D) [1602, 2000]
General
2 months ago
The mayor of a town has proposed a plan for the construction of a new community. A political study took a sample of 900 voters in the town and found that 75% of the residents favored construction. Using the data, a political strategist wants to test the claim that the percentage of residents who favor construction is more than 72%. Testing at the 0.05 level, is there enough evidence to support the strategist's claim?
General
2 months ago
The most commonly used dice are six-sided, with numbers 1 through 6 on the faces. Tom is playing a game in which he is rolling two six-sided dice. In the game, then, the smallest possible sum on the two dice is 2, and the largest possible sum is 12.(a) What is the expected value of the sum of the two dice?(b) What is the probability of rolling a sum of 8?(c) What is the probability of rolling a sum of 12?(d) What is the probability of rolling a sum smaller than 13?(e) What is the probability of rolling a sum of 3 or 11?
General
2 months ago
Clare mixes 2 1/2 cups of water with 1/3 cup of orange juice concentrate Han mixes 1 2/3 cups of water with 1/4 cup of orange juice concentrate whose orange juice concentrate is stronger
General
2 months ago
A carnival costs $10.50 to enter plus an additional $3.50 per ticket for rides and food.Write an algebraic expression to represent the total cost for a visit to the carnival. Let n represent the number of tickets purchased.What is the total cost to visit the fair if you purchase 20 tickets? Explain your reasoning.
General
2 months ago
The operation manager at a tire manufacturing company believes that the mean mileage of a tire is 33,208 miles, with a standard deviation of 2503 miles. What is the probability that the sample mean would differ from the population mean by less than 633 miles in a sample of 49 tires if the manager is correct? Round your answer to four decimal places.
General
2 months ago
The owner of a small store buys coats for 50.00$ each. A .She sells the coats for 90.00 each. What percent of the purchase price is the selling price? B. The owner increases the sale price the same percent that you found in part A when she buys jackets for $35 and sells them. How many jackets must the owner buy for the total jacket sales to be at least $250? Explain your answer.
General
2 months ago
PLEASE HELP!A solid object is dropped into a pond with a temperature of 20°C. The function f(t)=Ce^(-my)+20 represents the situation, where T is times in minutes, C is a constant in K= 0.0399. After four minutes the object has a temperature of 35°C what was the initial temperature of the object round your answer to the nearest tenth, and do not include units
General
2 months ago
PLEASE HELP1) If y varies inversely as x, and y=3 as x = -2, find y for the x value of -1.2) If y varies directly as x, and y=15 as x=-3, find y for the x value of 4
General
2 months ago
The graph represents a distribution of data.A graph shows the horizontal axis numbered 35 to x. The vertical axis is unnumbered. The graph shows an upward trend from 35 to 50 then a downward trend from 50 to 65. What is the mean of the data?5103050
General
2 months ago
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