The heights of 18 year-old men are approximately normally distributed with mean 68 inches and standard deviation 3 inches. What is the probability that an 18-year-old man selected at random is taller than 70 inches? a) 0.0918 b) 0.7475 c) 0.4082 d) 0.2525 e) 0.1836

Fill in the Blank 1 point int (4x)/(sqrt (1+x^2))dx=type your answer...

Fill in the blank to make equivalent rational expressions. (8)/(3x-7)=(square )/(49-21x)

Use the inverse of the coefficient matrix to solve the following system of equations. 2x-y-2z=10 -2y-3z=6 3x-y-2z=14 x=square ,y= square , and z= square (Type integers or simplified fractions.)

Find (dy)/(dx) at the given point. 7x^2-3y^3=4x-3y at (0,1) The value of (dy)/(dx) at (0,1) is (1)/(3) (Simplify your answer.)

Answer the following questions. (a) What percent of 40.4 is 50.5 ? (b) What number is 24% of 38.5 ?

In the following problem divide using long division State the quotient, q(x) and the remainder, r(x) (x^2+12x+35)div (x+7) (x^2+12x+35)div (x+7)=square +(square )/(x+7) (Simplify your answers. Do not factor. Use integers or fractions for any numbers in the expressions.)

5. Factor to write each in a simpler form. (cotTheta +tanTheta )/(sec(-Theta ))

Factor completely. 25x^4-y^4 Answer square

The mean of a normal probability distribution is 70; the standard deviation is 5. About what percent of the observations lie between 60 and 80? 34 99.7 68 95

Hot Questions

$\frac {1}{8}\times \square =1\frac {3}{8}$

You are helping with decorations for your grandparents' 50th wedding anniversary. You have to buy the streamers and balloons. The streamers cost $\$ 3$ per roll, and the balloons cost $\$ 5$ for a group of 10. You only have $\$ 66$ to spend on the decorations.How many rolls of streamers and groups of balloons can you buy? Let x represent streamers and y represent balloons. Write a linear inequality to represent this situation. $3x+5y\leqslant 66$ $3x+5y\lt 66$ $3x+5y\geqslant 66$ $3x+5y\gt 66$

Which equation has an a-value of $-2$ a b-value of 1, and ac-value of 3? $0=-2x^{2}+x+3$ $0=2x^{2}+x+3$ $0=-2x^{2}+3$ $0=2x^{2}-x+3$

Question 3 (1 point) Find the elasticity. $q=D(x)=\frac {1200}{x}$ $E(x)=\frac {1}{x}$ $E(x)=1$ $E(x)=\frac {x}{1200}$ $E(x)=\frac {1200}{x}$

Use any basic integration formula or formulas to find the indefinite integral.(Use C for the constant of integration.) $\int \frac {4}{1+e^{-4x}}dx$ $\square $

Solve the equation $6y^{3}-7y^{2}-3y=0$ $y=\square $ Write your answers as a list of integers or reduced fractions, with your answers separated by (a) comma(s). For example, if you get 4 and $-\frac {2}{3}$ as your answers, then enter $4,-2/3$ in the box.

Factor: $3az-9ac+yz-3yc$ $3(3a+y)(a-c)$ $3(a-c)(z-y)$ $(z-3c)(3a-y)$ $(z-3c)(3a+y)$

(05.04 MC) The data to represent average test scores for a class of 16 students includes an outlier value of 72. If the outlier is included, then the mean is 86. Which statement is always true about the new data when the outlier is removed? The mean would increase. The mean would decrease. The median would increase. The median would decrease.

Watch the video and then solve the problem given below. Click here to watch the video. A committee has seven men and four women. If four people are selected to go to a conference, what is the chance that the group is two men and two women? $\square $ (Type an integer or a simplified fraction.)

A city council consists of eight Democrats and six Republicans. If a committee of six people is selected, find the probability of selecting two Democrats and four Republicans. $\square $ (Type a fraction. Simplify your answer.)