06/11/23

The resistance of a wire varies directly with its length and inversely with the square of its diameter
The resistance of a wire varies directly with its length and inversely with the square of its diameter. If 100 ft. Of wire with diameter of 0.01 in has a resistance of 10 OHMS, what is the... more
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06/09/23

How much money did he spend?
Humberto had $1700 in a savings account to use for spending money during his summer trip to Mexico, he was careful and spent only $175 each week. How much money did he have left? How many weeks he... more
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06/09/23

exponential decay
A body was found in the basement of the Underwater Basket Weaving Building at​ 12:00 noon​ today, where the temperature is a steady 65 degrees Fahrenheit. When​ found, the core temperature was 91.8... more
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06/09/23

exponential decay
A mummy was recently discovered. It now contains 89.7​% of its original Carbon 14.About how old is the mummy. Assume that the​ half-life of Carbon 14 is 5730 years.ROUND YOUR ANSWER TO THE NEAREST... more
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06/08/23

solving a algebraic function

if f(x)=2x^2 + 5 and g(x)=x^2, find (f-g)(x)
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05/30/23

Is there a significant difference between the two populations represented by these two samples? Use a two-tailed test with α = .01 (t critical = +/- 2.75)

n1=18, M1=42, SS1=398n2=16, M2=48.6, SS2=370
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05/23/23

For a sample of n = 30 scores, a score that is 6 points above the mean has a z-score of z = 1.50. What is the sample standard deviation?
Please provide how to solve :)
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05/05/23

Find a 90% confidence interval for 𝜎2.  (Round your answers to three decimal places.)
the EPA limit on the allowable discharge of suspended solids into rivers and streams is 60 milligrams per liter (mg/l) per day. A study of water samples selected from the discharge at a phosphate... more
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05/02/23

what the answer to the question below
At which of the following points do the two equations f(x) = 3x2 + 5 and g(x) = 4x + 4 intersect?Option A: (1, 8)Option B: (8, 1)Option C: (0, 5)Option D: (0, 4)
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05/02/23

Algebra help needed

The table below shows the profit, p(x), in dollars from selling x itemsX 1 2 3 6 9 14Y 90.6 106.4 112.4 71.6 -57.4 -468.4Using your quadratic regression, estimate the profit from selling 12 items? 
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04/26/23

Find all solutions of the equation in the interval [0, 2π)
Find all solutions of the equation in the interval [0, 2π).Write your answer in radians in terms of π.If there is more than one solution, separate them with commas.
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04/25/23

Standard deviation

Find the standard deviation for the following sample data: 57.2 57.9 61.4 69.8 59.0 64.7 70.1 64.7 53.5 78.2
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04/06/23

What is a real-world example of a t-test
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03/14/23

Calculus, speed and velocity of a particle
Suppose the position of a particle at time t is given by (x, y) = (t+ sin t, t−cos t)a) What is the velocity of the particle at time t?b) What is the speed of the particle at time t?c) Does the... more
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03/12/23

Quick help?!?!?
evaluate tan(arccsc-1) please show work
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03/12/23

Suppose someone wants to know about college student performance on the final exam for MA235. They are given the exam scores for students in my MA235 classes from last quarter.

(a) In this situation, what are each of the following?1.) population 2.) units3.) sample4.) characteristics (b) Would the average exam score of the students from my classes last quarter be... more
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03/09/23

Normal Approximation to Binomial
n= 80p= .15x=18
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03/09/23

Statistics - Probability
Suppose a jar contains 17 red marbles and 37 blue marbles. If you reach in the jar and pull out 2 marbles at random at the same time, find the probability that both are red.  
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03/09/23

What effect does the circled point have on the slope and y-intercept of the least-squares regression line?
A guidance counselor wants to determine if there is a relationship between a student’s number of absences, x, and their grade point average (GPA), y. The data that were collected are displayed in... more
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03/09/23

What is the Critical Value and 95% confidence interval
Ten randomly selected people took an IQ test A, and next day they took a very similar IQ test B. Their scores are shown in the table below. Person A B C D E F G H I J Test... more
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03/03/23

A family has two cars. During one particular week,
A family has two cars. During one particular week, the first car consumed 30 gallons of gas and the second consumed 20 gallons of gas. The two cars drove a combined total of 950 miles, and the sum... more
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03/03/23

any help is appreciated
Let X be the number of goal chances that result in ' goals for a football team during n goal chances. In the course of many matches, the team scores on 20% of the chances. a)Explain why it might be... more
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03/03/23

simplify 1-tan^2x/1+tan^2x
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03/03/23

This is copied exactly from the teacher. I know it's probably not realistic, it's just a problem. I need this answer ASAP please
A soup with an internal temperature of 350F was taken off the stove to cool in a 71F room. After 15 minutes, the internal temperature of the soup was 175F. a) Use Newton's Law of cooling to write a... more
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02/15/23

Quiz confidence interval for population mean
Find the critical value tα2 needed to construct a confidence interval of the given level with the given sample size. Round the answer to at least three decimal places.Level 95% sample... more
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