1,647 Answered Questions for the topic Math Help For College

Math Help For College Graphing

10/08/14

graph the inequality -5x-4y>20 two point graph
I am looking for the answer for the graph. I have 0 and -5 for the x I need to figure out the y   -5x-4y≥20
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Math Help For College Probability

10/07/14

A single card is dealt from a standard deck of 52 cards. What is the probability that the card is a 5 and club?
A single card is dealt from a standard deck of 52 cards. What is the probability that the card is a 5 and club? What is the probability that the card is  5 and a 2?
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Math Help For College Math Math Help Statistics Question

10/05/14

Stats Question
1)Rejecting the null hypothesis when the research hypothesis is false is a. effect size. b. power. c. a Type I error. d. a Type II error 2)Failing to reject the null hypothesis when the... more
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Math Help For College Math Statistics Math Help

10/05/14

Stats help Mult
1)In a t test for dependent means, 15 participants are each tested twice. This makes a total of 15 "before" scores and 15 "after" scores. What are the degrees of freedom? a. 15 b. 14 c. 30 d.... more
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Math Help For College

10/04/14

Which line is perpendicular to the line y =3 x + 3 ?
Which line is perpendicular to the line y =3x+ 3 ?                                                             4
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Math Help For College

10/04/14

Graph of linear inequalities in two variables
Graph the inequality y≥9/2x+9   I am trying to figure out where 9/2 would go on a graph. 
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10/03/14

Stats Help Please Please
A sports psychologist gave a questionnaire about healthy eating habits to randomly selected professional athletes. The results are displayed below. Using the α =.05 significance level, is there a... more
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Math Help For College Statistics Math Help Statistics Question

10/03/14

Stats Help help
1)You conducted a t test for independent means, and found that the t score equaled 0. This means that a. the two population means must be equal. b. the two population variances must be equal. c.... more
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Math Help For College Statistics Math Help Statistics Question

10/03/14

Multiple Choice Question
The most likely way for a t test to be presented in a research article for a study with 25 participants is a. t (25) < significant b. t (25) = 3.01, p < .05 c. t (24) = 2.94, p <... more
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Math Help For College Statistics Math Help Statistics Question

10/03/14

Statistics in Human Behavior
The mean of a self-worth measure in the population of adult males is 30.00. A researcher is interested in whether females report differing levels of self-worth. The researcher randomly samples 150... more
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Math Help For College Math Help

09/30/14

the perimeter of a standard-sized rectangular rug is 24ft the length is 2ft longer than the width. find the dimensions
what is the width ? what is the length?  
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Math Help For College Statistics Word Problems Math Help

09/29/14

Stats Help Please
A researcher is interested in increasing feelings of self-confidence in adolescents. He randomly selects 100 adolescents from the population and randomly assigns 50 individuals to a treatment... more
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Math Help For College Math Trigonometry Math Help

09/25/14

Trigonometry
Given that tan A =2/3 where pi<A<3pi/2, find, without using a calculator, the value of tan (1/2 A).   Ans: (-3-√13)/2   Thank You! :)
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Math Help For College Math Mathematics Thank You

09/25/14

Surds and Indices
The mass, m milligrams , of a radioactive substance, present at time t years after first being observed, is given by m=300e-0.85t . Given that p milligrams is the amount of the substance that... more
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Math Help For College

09/24/14

The area of a rectangle is 33 ft2 , and the length of the rectangle is 5 ft less than twice the width. Find the dimensions of the rectangle.
I dont understtand.
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Math Help For College Math Modulus

09/24/14

Modulus and power functions
The rates of return from firms A, B and C are x%, y% and 5% respectively. Firm A's rate differs from firm B's rate by half the difference in the rates between firm B and firm C. Find the possible... more
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Math Help For College Math Math Help Mathematics

09/24/14

Surds and indices
The curve y=axn-23 passes through (3,4), (9,220) and (-1,k). Find the values of a, n and k.   Ans: a=3, n=2 and k=-20   Thank You!:)
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Math Help For College Math Math Help Mathematics

09/24/14

Surds and Indices
Fenitoine is administered intravenously through a bolus injection. The concentration, C µg/ml , of the drug in the blood, t hours after administration is given by C=4.86e-0047t . State the... more
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Math Help For College Math Math Help Differentiation

09/22/14

Differentiation
Differentiate the following with respect to x. cos(x+π)/sin3x   Ans: [sin(x+π)sin3x +3cos(x+π)cos3x]/ sin23x   Thank you! :)
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Math Help For College Math Math Help Differentiation

09/22/14

differentiation
The function f is defines by f(x)=sinx + cosx , for 0≤x≤2π. Find (i) The range of values of x for which f(x) is increasing        (ii) The range of values of x for which f(x) is... more
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Math Help For College Math Statistics Statistics Question

09/19/14

Deviation anxiety
A researcher is interested in comparing a new self-talk method for reducing anxiety in individuals who are “clinically anxious.” Assume the mean and standard deviation of this measure of anxiety... more
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Math Help For College Math Statistics Math Help

09/19/14

Population
 The general population (Population 2) has a mean of 30 and a standard deviation of 5, and the cutoff Z score for significance in a study involving one participant is 1.96. If the raw score... more
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Math Help For College Math Statistics Math Help

09/19/14

Principle, a distribution of means
1) In principal, a distribution of means can be formed by A) calculating the mean of all the possible samples of a given size and dividing it by the variance. B) using the sample's mean and... more
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Math Help For College Math Help

09/18/14

Determine the equation of g(x) that results from translating the function f(x) = (x + 2)2 to the right 6 units.
these problem are hard for me to do can you help me  
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Math Help For College

09/18/14

which of the following is the simplified expression for (6y2)(2y5)
How can I simplified expression for (6y^2) (2y^5)
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