03/14/23

You want to obtain a sample to estimate a population mean.

You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=61.8. You would like to be 90% confident that... more
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02/05/23

Question help please
A day on a distant planet observed orbiting a nearby star is 41.9 hr.41.9 hr. Also, a year on the planet lasts 89.7 Earth days.89.7 Earth days. In other words, for the purposes of unit conversion,... more
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02/02/23

A plane can fly 315 mph in still air. If it can fly 190 miles downwind in the same amount of time it can fly 125 miles upwind, find the velocity of the wind.
Math
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12/16/22

an ice cream shop offers sundaes sinsisting of 5 possible choices for ice cream and 4 possible choices for syrups. how many different types of sundaes are available at the ice cream shop?
an ice cream shop offers sundaes insisting of 5 possible choices for ice cream and 4 possible choices for syrups. how many different types of sundaes are available at the ice cream shop?
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12/05/22

Basic Thermodynamics Sample Problem 2
A rigid vessel contains 2 kg of steam at 5.25 MPa and 300°C. Determine its enthalpy in kJ using steam tables only.
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12/02/22

A coin is tossed and an eight - sided die numbered 1 through 6 is rolled . Find the probability of tossing a tail and then rolling a number greater than 5
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11/28/22

What is the orbital speed of the planet ? (G = 6.673 * 10 ^ - 11 * N * m ^ 2 / k * g ^ 2)
whats the answer? help
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11/27/22

how many 4- digit can be formed?
Using the digits 1, 2, 3 and 5, how many 4-digit numbers can be formed if :the first digit must be 1 and repetition of the digits is allowed?the first digit must be 1 and repetition of the digits... more
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11/27/22

I can't understand this i need help badly
In a​ poll, 37​% of the people polled answered yes to the question​ "Are you in favor of the death penalty for a person convicted of​ murder?" The margin of error in the poll was 2​%, and the... more
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11/17/22

How much corn oil must the bowl displace in order to float?
A metal bowl with a weight of 1.50 N is placed in a larger kitchen container filled with corn oil. How much corn oil must the bowl displace in order to float? For reference, the mass density... more
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11/17/22

Integers! Help!
The sum of three consecutive integers is twice the smallest integer. What is the smallest of the three integers?Enter the integer in the box.
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11/12/22

What is the current in a circuit?
Cons‎i‎der an LC circ‎uit with L = 50.0 [mH] and C = 5.00 [μF]. The ma‎ximum c‎rrent in t‎he induc‎tor is 0.60 [A]. What is the cu‎rr‎ent in the c‎ir‎cuit if the ca‎p‎acitor carri‎es a t‎‎hird of... more
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11/09/22

what is the equation of the line that is parallel to this equation y= 1/3x+4 and passes through the point (3,1)
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11/04/22

Tension & Force
A uniform beam 3.60 m long and weighing 2100 N carries a 3850 N weight 1.50 m from the far end, as shown in the figure below (Figure 1). It is supported horizontally by a hinge at the wall and a... more
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11/03/22

calculate the horizontal force needed to make a 3.8 kg baseball accelerate at a 641m/s^2

is part of a worksheet and I don't know how to solve it and need helpanswer the problem by using the equation for force (F=ma) and (W=mg)
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11/02/22

Write the level surface 5=3x+5y^2+sqrt(z) as the graph of a function f(x,y).
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10/27/22

The district uses a standardized reading test to assess a student’s reading level and that scores on this test are normally distributed with a mean of 250 and a standard deviation of 20. 
A public school district has been given federal development funds to establish remedial reading classes for the students in grades 1 through 3. The district uses a standardized reading test to... more
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10/25/22

Calculate the shaded area under the curve
The shelf life of a batteries produced by one major company are normally distributed with a mean of 4.9 years and a standard deviation of 1 years. The figure below shows the distribution of shelf... more
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10/24/22

i need some help in this questions

A machinist wishes to insert a brass rod with a diameter of 7 mm into a hole with a diameter of 6.998 mm. By how much would the machinist have to lower the temperature (in °C) of the rod to make it... more
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10/13/22

Suppose that 𝑋 is normally distributed with mean 85 and standard deviation 19. A. What is the probability that 𝑋 is greater than 114.07?
Suppose that 𝑋X is normally distributed with mean 85 and standard deviation 19. What is the probability that 𝑋X is greater than 114.07?
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10/08/22

What is the ground speed and heading of the jet measured from the west direction?
A jet plane flying from Darwin, Australia has an air speed of 270m/s in a direction 5 degrees south of west. The plane is in the jet stream which is blowing at 35m/s in a direction 25 degrees south... more
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10/07/22

Sample test statistic
You are testing the claim that the proportion of men who own cats is smaller than the proportion of women who own cats.You sample 100 men, and 80% own cats.You sample 200 women, and 75% own... more
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10/06/22

Implicit Derivative

Find dy/dx, where 4x^2+10y^2−3=0.dy/dx=
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09/28/22

Derivative Problem
g(x)=(x^3+2)(sqaure root of x-1/x)
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09/27/22

Dragsters can achieve average accelerations of 25.0m/s2. Suppose such a dragster accelerates from rest at this rate for 5.36s. How far does the dragster travel in this time?
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