# vivi

Popular questions and responses by vivi
1. ## Math

Holly is flipping a coin and pulling a marble from a bag. There are 4 white marbles, 2 blue marbles, and 5 green marbles, all of the same size, in the bag. What is the probability that the coin lands on heads and she pulls a green marble from the bag?

2. ## Math

A number cube is rolled 360 times and the results are recorded as follows: 41 ones, 54 twos, 62 threes, 75 fours, 33 fives, and 95 sixes. What is the experimental probability of rolling a two or a three?

IN A TUG OF WAR, 5 DONKEYS ARE EXACTLY EQUAL TO 2 ELEPHANTS. IN ANOTHER TUG OF WAR, 3 ELEPHANTS ARE EQUAL TO 1 CAR. WHICH TEAM SHOULD WIN IF A CAR AND 3 DONKEYS ARE MATCHED AGAINST 4 ELEPHANTS?

4. ## Calculus

The concentration of a drug in a patient's bloodstream t hours after it is taken after it is taken is given by C(t) = 0.016t/(t+2)^2 mg/cm^3 Find the maximum concentration of the drug and the time at which it occurs.

5. ## Calculus

The concentration of a drug in a patient's bloodstream t hours after it is taken after it is taken is given by C(t) = 0.016t/(t+2)^2 mg/cm^3 Find the maximum concentration of the drug and the time at which it occurs.

6. ## Math

A drawer contains 2 red socks, 3 white socks, and 3 blue socks. Without looking, you draw out a sock, return it, and draw out a second sock. What is the probability that the first sock is blue and the second sock is red?

On the average your heart beats about 72 times per minute. At this rate, about how many times will it beat: a) in a 30-day month; b) in a year; c)in your lifetime, if you live to 72 years of age?

8. ## science

Action-reaction forces do not cancel each other out because _____. they are not equal they act in opposite directions they act on different objects inertia prevents one object from moving

9. ## Geometry

What is the value of x if it’s a 38 degree triangle and two sides of 21

10. ## Calculus

Water is draining at a rate of 2 cubic feet per minute from the bottom of a conically shaped storage tank of overall height 6 feet and radius 2 feet . How fast is the height of water in the tank changing when 8 cubic feet of water remain the the tank?

11. ## math

The edge of a cube is increasing at a rate of .05 cm/s. In terms of the side of the cube, s, what is the rate of change of the volume of the cube?

12. ## Calculus

Consider a box with a square base of side length s and height h. If the sum of the length, width, and height of the the box is 120 inches, what is the maximum possible volume? Justify your answer.

MY DAUGTHER WILL BE 10 YEARS NEXT WEEK AND THE HOMEWORK SAID: A NORMAL PERSON BLINKS ABOUT 25 TIMES PER MINUTE WHEN AWAKE. A) HOW OLD WILL YOU BE ON YOUR NEXT BIRTHDAY; B) TO THE NEAREST MILLION, HOW MANY TIMES WILL YOU HAVE BLINKED ON YOUR NEXT BIRTHDAY?.

14. ## math

Thomas is playing Tic-Tac-Toe with a computer. It is the computer's turn to place an "x" on the board. If the computer makes its moves at random in the open spaces, what is the chance it will win on this move?

15. ## physics

A 1.6 N loop of wire is hung in a magnetic field as shown. If the spring scale reads 0.60 N when a current of 1.0 A passes through the loop what is the magnitude and direction of the magnetic field?

16. ## Math

A road worker holds a flag in position R with an out strech arm. He swings the flag downward and it forms angle of 30degrees with the ground P. His shoe Q is 2,5 away from P. His head is 24cm above his shoulder. calculate the height of the man

17. ## SS

What are two important unifying forces in central asia? HELP ME PLEASE!!!

18. ## Calculus

Car A traveling southward towards Point P at 45 mi/hr. Car B is traveling east away from P at 30mi/hr. AT the instant when the distance AP is 60 mi and PB is 80 mi, what is the rate of change of distance AB?

19. ## math

Roberto ate 3 pieces of a pizza and them felt that he should pay 1/4 of the cost because that's the fraction he ate. How many pieces was the pizza cut into?

20. ## government

This is a quote from an essay on “Liberty” by John Stuart Mills. “The peculiar evil of silencing the expression of opinion is that it is robbing the human race. If the opinion is rights, they are deprived of the opportunity for exchanging error for

21. ## us history

I need to do a thesis on a late-present American history about anything. I can't think of something that will be easy and easily researched. Any ideas?

22. ## government

Today "freedom of speech" is limited in interest of public safety by the clear and present danger test. do you feel this is a good standard?

23. ## math

Roberto ate 3 pieces of a pizza and them felt that he should pay 1/4 of the cost because that's the fraction he ate. How many pieces was the pizza cut into?

1. ## algebra

Rhonda's age decreased by 16 is 47 .

posted on July 7, 2017
2. ## math

this is soooo stupid i need help not the quistion

posted on November 8, 2015
3. ## Need help by tonite FINANCE

1.40

posted on March 3, 2015
4. ## geometry

27.5

posted on September 24, 2014
5. ## finance

324,000

posted on August 24, 2014
6. ## Physics

69.96

posted on October 23, 2011
7. ## math

The lions ate up all the prophets

posted on May 5, 2010