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Leah has 28 more marbles than Dan. 1 3 of Leah’s marbles is equal to 4 5 of Dan’s marbles. Find the number of marbles that Leah has.
General
4 months ago
8% of items in a shipment are known to be defective. If a sample of 5 items is randomly selected from this shipment, what is the probability that at least one defective item will be observed in this sample? Round your result to 2 significant places after the decimal (For example, 0.86732 should be entered as 0.87).
General
4 months ago
A 149-turn circular coil of radius 2.45 cm is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. During 0.141 s the magnetic field strength increases from 50.9 mT to 98.1 mT. Find the magnitude of the average EMF, in millivolts, that is induced in the coil during this time interval.
General
4 months ago
You make one pitcher of iced tea and one pitcher of lemonade for a party. Just before the party starts, you catch a little mischievous child mixing the two beverages. The child says that only one cup of the iced tea was taken and put in the lemonade. Then, the child took only one cup of the lemonade-tea mixture that was just created and put it back into the pitcher of iced tea, hoping that no one would notice what had been done. Is there now more lemonade in the iced tea or more iced tea in the lemonade?
General
4 months ago
Which of the following is NOT true when dealing with independent samples? Choose the correct answer below. A. The confidence interval estimate of µ 1-µ 2 is ( x 1 - x 2 ) - E < ( µ 1 - µ 2 ) < ( x 1 - x 2 ) + E. B. When making an inference about the two means, the P-value and traditional methods of hypothesis testing result in the same conclusion as the confidence interval method. C. The variance of the differences between two independent random variables equals the variance of the first random variable - the variance of the second random variable.D. The null hypothesis µ 1=µ 2 or µ 1 - µ 2 = 0 can be tested using the P-value method, the traditional method, or by determining if the confidence interval limits for µ 1-µ 2 contain 0.
General
4 months ago
The region bounded by the given curves is rotated about the specified axis. Find the volume V of the resulting solid by any method. x = (y − 7)2, x = 4; about y = 5
General
4 months ago
How many feet ??? Please help
General
4 months ago
An ice chest contains 6 cans of apple juice, 4 cans of grape juice, 5 cans of orange juice, and 8 cans of mango juice. Suppose that you reach into the container and randomly select three cans in succession. Find the probability of selecting no grape juice.
General
4 months ago
Find the circumference of a circle that has an area of 452.16 square meters. (Use 3.1416 as the value of π.) A. 37.6992 meters B. 24 meters C. 75.3984 meters D. 12 meters
General
4 months ago
Jonathan's parents told him that for every 5 hours of homework or reading he completes, he would be able to play 3 hours of video games. His friend Lucas's parents told him that he could play 30 minutes for every hour of homework or reading time he completes. If both boys spend the same amount of time on homework and reading this week, Which boy gets more time playing video games? How do you know?
General
4 months ago
Describe each step taken to solve the equation. Then, check the solution to see if it is valid. If it is not a valid solution, explain why a) √x+6=4b)∛x+6=4.
General
4 months ago
Solve each radical equation. Be sure to check your solutionsa)√(2x-3)=11b)∛(6-x)=-3
General
4 months ago
Describe each step taken to solve the equation. Then, check the solution to see if it is valid. If it is not a valid solution, explain why∛x-6=4, ∛x=10, x=1000.
General
4 months ago
Solve for y.(3x - 3)Enter your answer in the box.y=C(8-4)
General
4 months ago
Huck Finn can paint a fence in 5 hours. After some practice, Tom Sawyer can now paint the fence in 6 hours.How long would it take Huck and Tom to paint the fence together?
General
4 months ago
Consider the rational equation 1/R=(1/x)+(1/y).Find the value of R when x=2/5 and y=3/4.
General
4 months ago
7 1/8 dived by 4 3/4
General
4 months ago
Use the properties of logarithms to rewrite each expression in an equivalent form containing a single logarithm.1/2 log(16) + log(3) + log 1/4
General
4 months ago
Melissa walks 3 miles to the house of a friend and returns home on a bike. She averages 4 miles per hour faster when cycling than when walking, and the total time for both trips is two hours. Find her walking speed.
General
4 months ago
In the high school band there are 2 percussionists on the sidelines to every 13 marching instruments. If the high school band has 180 total members then how many percussionists are on the sidelines
General
4 months ago
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