59,606 Answered Questions for the topic Math
Math
12/09/23
Math Expressions
Select all expressions that are equivalent to 8 1/2x + 1/2 + 3 1/2x - 2x.12x -2x10x + 1/212 - 2x9x + 3 1/2 - 2x12x - 2x + 1/2
Math
12/09/23
8 1/2x + 1/2 + 3 1/2x - 2x =
Math Statistics
12/09/23
Suppose that the mean age of Mount Sac juniors is 20 years with a standard deviation of 5 years
And, the mean age of CSUF juniors is 21 years with a standard deviation of 4. Also, assume that the population ages are normally distributed. Hint: the conditions are met to use the normal model -...
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Math Statistics
12/09/23
A sample of = 21 of juniors at PSU found a mean age of 23 years
A sample of n1 = 21 of juniors at PSU found a mean age of 23 years. A sample of n2 = 20 juniors at OSU found a mean age of 22 years. The population ages are normally distributed and o1 = 2 o2 =...
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Math
12/09/23
An object with initial temperature 120 is submerged in large tank of water whose temperature is 40 degrees farenheit.
An object with initial temperature 120 is submerged in large tank of water whose temperature is 40 degrees farenheit. Find a formula for f(t), the temperature of the object after t minutes, if the...
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Math
12/09/23
The doubling period of a bacterial population is 10 minutes.
The doubling period of a bacterial population is 10 minutes. At time t=80 minutes, the bacterial population was 60000. What was the initial population at time? Find the size of the bacterial...
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Math
12/09/23
A bacteria culture initially contains 3000 bacteria and doubles every half hour. Find the size of the baterial population after 80 minutes. Find the size of the baterial population after 9 hours.
A bacteria culture initially contains 3000 bacteria and doubles every half hour.Find the size of the baterial population after 80 minutes. Find the size of the baterial population after 9 hours.
Math
12/09/23
At the beginning of an experiment, a scientist has 200 grams of radioactive goo. After 255 minutes, her sample has decayed to 3.125 grams.
At the beginning of an experiment, a scientist has 200 grams of radioactive goo. After 255 minutes, her sample has decayed to 3.125 grams. What is the half-life of the goo in minutes? Find a...
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Math
12/09/23
The half-life of Radium-226 is 1590 years. If a sample contains 300 mg, how many mg will remain after 2000 years?
The half-life of Radium-226 is 1590 years. If a sample contains 300 mg, how many mg will remain after 2000 years?
Math
12/09/23
The half-life of Palladium-100 is 4 days. After 12 days a sample of Palladium-100 has been reduced to a mass of 7 mg.
The half-life of Palladium-100 is 4 days. After 12 days a sample of Palladium-100 has been reduced to a mass of 7 mg.
Math
12/08/23
Find a degree 3 polynomial with real coefficients having zeros 3 and 2-2i and a lead coefficient of 1. Write P in expanded form. Be sure to write the full equation, including P(x)
Find a degree 3 polynomial with real coefficients having zeros 3 and 2-2i and a lead coefficient of 1. Write P in expanded form. Be sure to write the full equation, including P(x)
Math Algebra 1
12/08/23
I NEED HELP ASAP PLEASE
Let f(t) represent the temperature of a turkey baking in an oven as a function of time (t) in the oven (in minutes). This means time (t) is the independent variable and temperature of the turkey...
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Math
12/08/23
HELPPLEASEIMCONFUSED
Scarlett drove 9292 miles in 2, start fraction, 2, divided by, 3, end fraction232 hours. If she drove at a constant rate, how far did she travel in one hour? Enter your answer as a whole number,...
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Math Calculus
12/08/23
Exponential Quotient (solve without calculator)
Given y=(2-2x)/(e-2x), find dy/dx.
Math
12/08/23
what is the triangles value
GEOMETRY Find the possible values of x . The perimeter is less than 28 feet. A triangle. The sides are labeled 7 feet, 7 feet and x. The possible values of x are
Math
12/07/23
A rectangle has an area of 288 square meters and a base of 18 meters. What is the height?
Math Algebra 1
12/07/23
I need help please
Write an equation in point slope form of the line with a slope of 4 that passes through the (3 -1)
Math Algebra 1
12/07/23
The Normal Distribution
IQ is normally distributed with a mean of 100 and a standard deviation of 15.
a) Suppose one individual is randomly chosen. Find the probability that this person has an IQ greater than 95.
Write...
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Math Algebra 1
12/07/23
The Normal Distribution
A variable is normally distributed with mean 19 and standard deviation 5. Use your graphing calculator to find each of the following areas. Write your answers in decimal form. Round to the nearest...
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