michigantown
Calculators
General
Algebra
Geometry
Coordinate-geometry
Statistics
Calculus
Qna
Math
michigantown
michigantown
Home
General
Algebra
Geometry
Coordinate-geometry
Statistics
Calculus
Qna
Math
MATH SOLVE
Home
A filter filled with liquid is in the shape of a vertex-down cone with a height of 9 inches and a diameter of 6 inches at its open (upper) end. If the liquid drips out the bottom of the filter at the constant rate of 4 cubic inches per second, how fast is the level of the liquid dropping when the liquid is 2 inches deep?
General
4 months ago
Allison can row a boat 1 miles upstream (against the current) in 24 minutes. She can row the same distance downstream in 13 minutes. Assume that both the rowing speed and the speed of the current are constant. What is the speed of Allison's rowing and what is the speed of the current? Round to the nearest hundredth.
General
4 months ago
A ski shop sells skis with lengths ranging from 150 centimeters to 220 centimeters. The shop says the length of the skis should be about 1.16 times a skier’s height h (in centimeters). Identify a compound inequality that represents the heights (in centimeters) of skiers the shop does not provide skis for.
General
4 months ago
Find the slope perpendicular to the given points(6, -6) & (-1,-3)7/30-7/33/7-3/7
General
4 months ago
What are the domain and range of the function f(x)=113(x-5)²+4
General
4 months ago
The math teacher, Ms. Zentz, is buying appropriate math tools to use throughout the year. She is planning on buying twice as many rulers as protractors. The number of calculators Ms. Zentz is planning on buying is one quarter of the number of protractors. If Ms. Zentz buys 65 items, how many protractors does Ms. Zentz buy?
General
4 months ago
Determine whether each of these sets is countable oruncountable. For those that are countably infinite, exhibit a) one-to-one correspondence between the set of positiveintegers and that set.b) integers divisible by 5 and not 7c) the real numbers with decimal representationsconsisting of all 1’sd) the real numbers with decimal representationsconsisting of all 1’s or 9’s
General
4 months ago
A study of king penguins looked for a relationship between how deep the penguins dive to seek food and how long they stay underwater. For all but the shallowest dives, there is a linear relationship that is different for different penguins. The study report gives a scatterplot for one penguin titled, "The relation of dive duration (DD) to depth (D)." Duration DD is measured in minutes, and depth D is in meters. The report then says, "The regression equation for this bird is DD=2.69+0.0138D. What is the slope of the regression line?
General
4 months ago
Classify the following data. Indicate whether the data is qualitative or quantitative, indicate whether the data is discrete, continuous, or neither, and indicate the level of measurement for the data. Five people are in a bakery waiting for service. Each person takes a ticket when they enter the bakery in order to determine when they will be served. The person with the lowest ticket number will be served next.
General
4 months ago
If the angle of the incline is less than the limiting angle of repose, which of these statements is true? [ ] fs = the coefficient of static friction multiplied by the normal force [ ] fs > the coefficient of static friction multiplied by the normal force [ ] fs < the coefficient of static friction multiplied by the
General
4 months ago
The completion time for an exam is normally distributed with expected value 75 minutes and variance 12 minutes. What is the probability that a student will finish this exam in less than 70 minutes or more than 80 minutes?
General
4 months ago
A 40 foot tall monument sits on top of a hill. Pete is standing at a point in the hill and observes the top of the monument at an angle elevation of 50 degrees and the bottom of the monument at an angle of elevation of 22 degrees. Find the distance Pete must climb to reach the monument.
General
4 months ago
A balloon rises at the rate of 8 feet per second from a point on the ground 12 feet from an observer. To 2 decimal places in radians per second, find the rate of change of the angle of elevation when the balloon is 9 feet above the ground. Type your answer in the space below. If your answer is a number less than 1, place a leading "0" before the decimal point
General
4 months ago
A Ferris Wheel is built such that the height in feet above ground of a seat on the wheel at time t seconds can be modeled by h(t) = 53 + 50sin((pi/16)t - (pi/2)) The wheel makes one revolution every 32 seconds. The ride begins when t = 0. During the first 32 seconds of the ride, when will a person on the Ferris Wheel be 53 feet above the ground?
General
4 months ago
A ball is thrown in the air from a platform at time t = 0 seconds. The height, h(t), of the ball can be modeled as a function of time, t, by the equation h(t) = -16t + 40t + 20. Approximately how many seconds after being thrown will the ball hit the ground?2.37 seconds1.25 seconds2.93 seconds0.13 seconds
General
4 months ago
Suppose that the average number of airline crashes in a country is 1.9 per month.(a) What is the probability that there will be at least 2 accidents in the next month?Probability =(b) What is the probability that there will be at least 4 accidents in the next two months?Probability =(c) What is the probability that there will be at most 3 accidents in the next four months?Probability =
General
4 months ago
At a small college somewhere on the East coast, 20% of the girls and 30% of the boys smoke at least once a week.Independent random samples of 75 girls and 100 boys are to be selected and the proportions of smokers in the samples are to be calculated.What is the mean of the sampling distribution of the difference in the sample proportion of girl smokers and the sample proportion of boy smokers?
General
4 months ago
A random sample of 144 observations has a mean of 20, a median of 21, and a mode of 22. The population standard deviation is known to equal 4.8. The 95.44% confidence interval for the population mean is______? a. 19.200 to 20.800 b. 18.78 to 20.784 c. 15.2 to 24.8 d. 19.216 to 20.784 e. 21.2 to 22.8
General
4 months ago
Acandle maker sells small candles for 10$ and large candle for 20$.on a certain day he sells 20candle overall . and makes 300 $ . How many small candle did he sell ?
General
4 months ago
At the fast food restaurant, four cheeseburgers and five small fries have a total of 2,310 calories. Three cheeseburgers and two small fries have a total of 1,330 calories. How many calories does each item contain?
General
4 months ago
Previous
1
2
3
4
5
6
7
8
9
10
11
12
13
Next