04/08/15

Find the magnitude of an earthquake with intensity 52,000,000I0.
The Richter scale magnitude Rof an earthquake of intensity Iis defined as R=log(II0),where I0is a small threshold intensity. Find the magnitude of an earthquake with intensity 52,000,000I0.
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04/08/15

finding hours
For her phone service, Maria pays a monthly fee of $20 , and she pays an additional $0.07 per minute of use. The least she has been charged in a month is $104.84 . What are the possible numbers of... more
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04/08/15

whats the answer
If I sold nachos and each serving contains 3 1/3 of chip what's the best estimate number of servings if I had 51 5/8 bags of chips
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04/08/15

The Governor of state A earns 48,145 more than the governor of state B. If the total of their salaries is 282,635 find the salaries of each
I need to know the salaries of state A and state B
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04/08/15

2 pipes can fill in 6 h and 12 h. the other pipe can empty the tank in 24h. How long would it take to fill the tank with all 3 pipes open?
I have been stuck on this problem for awhile. Someone please help. I am not sure what my variable is.
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04/08/15

Velocity word problem
For the equation v=8.8 square root L/A where the A is the area of the wings of a jet in square feet and L is the lift of the jet in newtons. Find the velocity of the wing with and area of 5.5•10^3... more
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04/08/15

The lengh X (inches) of sardines is a N(4.62 ; 0.0529) random variable. What proportion of sardines is (a) Longer than 5 inches? (b) Btwn 4.35 and 4.85 inches?
The lengh X (inches) of sardines is a N(4.62 ; 0.0529) random variable. What proportion of sardines is (a) Longer than 5 inches? (b) Btwn 4.35 and 4.85 inches?
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04/08/15

question about story problem
The amount of interest earned by an account based on simple interest varies jointly as the principal amount and the number of years the investment has been held. If a principal of $6,000 invested... more
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04/08/15

Find the one C that works
Consider the function f(x) =1/x  on the interval [ 4 , 10 ]. Find the average or mean slope of the function on this interval.    By the Mean Value Theorem, we know there exists a c in the open... more
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04/08/15

Jocelyn wants to create a magnetic board in the back of her classroom by covering part of the wall with a special magnetic paint.
Each can of paint will cover 15 square feet. If the area is 12 feet wide and 8 feet high, how many cans of paint should she buy? Please show process to get answer. Thank You!   A) 5 cans   B) 6... more
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04/08/15

A bag contains 54 red marbles, 44 blue marbles, and 2 green marbles. Probability
A bag contains 54 red marbles, 44 blue marbles, and 2 green marbles.  What is the probability of drawing at least 1 red marble and 1 blue marble, if four marbles total are chosen without... more
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04/07/15

How much does an average movie ticket cost in each of these countries?
Average movie prices in the United States are in general lower than in other countries it would cost 80.52 to buy three tickets in Japan and 2 tickets in Switzerland. three tickets in Switzerland... more
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04/07/15

60 of 42 out of 320
Megan surveyed a random sample of 60 students at her school and found that 42 of them ride the bus to school each day. If there are 320 students at Megan's school, about how many of them ride the... more
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04/07/15

what is the expected number of patients receiving care on a randomly selected day
a hospital monitors the number of patients under the care of the staff anesthesiologist on any given day.  The distribution of the number of patients, X, receiving treatment on a given day is... more
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04/07/15

For the missing term in the geometric sequence find the possible values
4,?,1/36  
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04/07/15

The pyramid has 2,300,000 blocks. How many cars would it take to weigh half as much as the pyramid if each car is equal to 1 and a half blocks?
If each car is equal to 1 and a half cars, how many cars would it take to weigh half as much as the pyramid?
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04/07/15

Point on a direct line segment?
Let MN be the directed line segment beginning at point M(2,1) and ending at point N(11,-3). Find the point P on the line segment that partitions the line segment into the segments MP and PN at a... more
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04/06/15

evaluate the expressions. and write your answer in scientific notation
1. (4.2x102) (4.2x105)   2. (2.5x10-2)4   3. 9.6x102/3.2x105
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04/06/15

decay - check exponential model is correct
half life of m-50 is 8 hrs, and you have 50 grams.  "A" is number of hrs after recording and f(A) is the amt left. describe this with an exponential model.     I have:  50 * 1/2 ^a/8 is this... more
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04/06/15

Is there a significant difference between the population proportions? State appropriate hypotheses for a significance test to answer this question
As part of the Pew Internet and Americna Life project, researchers surveyed a random sample of 800 teens and a seperate random sample of 400 young adults.For the teens, 79% said that they owned an... more
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04/06/15

Word problem
A fitness fanatic walks at 4 km/h for time t1, and then runs at 7 km/h for time t2. He travels a total of 26 km. If he had run for the same time that he had walked (t1) and walked for the same time... more
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04/06/15

how much money will there be in an account at the end of 4 years if $11000 is deposited at 6% intrest compounded semi-annually?
assume no withdraws are made
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04/06/15

The area of a rectangle is 14 m2 , and the length of the rectangle is 3 m less than twice the width. Find the dimensions of the rectangle.
The area of a rectangle is 14 m2, and the length of the rectangle is 3 m less than twice the width. Find the dimensions of the rectangle.
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04/06/15

Identify this equation without completing the square.
Identify this equation without completing the square.x2 + y2 - 8x + 4y = 0 The equation defines a circle.The equation defines an ellipse. The equation defines a hyperbola.The equation defines a... more
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04/06/15

Consider the function f(x)=x^2-5.If g(x)=f(x-7), what can be said of g(x)? Check all that apply.
The graph of g(x) is shifted seven units to the left of f(x) The graph of g(x) is shifted seven units to the right of f(x) The graph of g(x) is shifted seven units above f(x) The graph of g(x)... more
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