what is the width ? what is the length?
what is the width ? what is the length?
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 program...
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! :)
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...
I dont understtand.
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...
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!:)
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 concentration...
Differentiate the following with respect to x. cos(x+π)/sin3x Ans: [sin(x+π)sin3x +3cos(x+π)cos3x]/ sin23x Thank you! :)
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...
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 for...
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 obtained...
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...
these problem are hard for me to do can you help me
How can I simplified expression for (6y^2) (2y^5)
y-y1=m(x-x1) The slope of the line is represented by the number m, while the point of the line is represented by its x- and y- coordinates x1 and y1 respectively. Using the definition...
R varies directly with g and inversely with the square of h; R=3 when g=3 and h=5. a. R=5(g/h^2) b. R=5(h^2/g) c. R= 25(g/h^2) d. R= 25gh^2
It is lunchtime and you wish to build a pizza with 1 choice of crust, 1 meat, 1 vegetable. You have the following choices: 2 types of crust, 4 types of meats, and 7 types of vegetables. How many different...
How many distinct ordered arrangements can be made with the letters of the word TENNESSEE?
Really stumped with this problem. Any help is great