12/10/16

Mean or a proportion ? and solve problem accordingly
1. Find the sample size needed to estimate the percentage of republicans among registered voters in California. Use a 0.03 margin of error; use a confidence level of 90%.
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12/10/16

Eliminate the parameter to find the Cartesian equation for the function:
parametric equation: x = sin t, y = 1 + cos t.
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12/09/16

Slope is 3, and(1,4) is on the live. Using the given information write a standard form equation.
Im working on slope in class and i dnt know how to answer tjhis question.  
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12/09/16

How many liters of a 14% alcohol solution must be mixed with 20 liters of a 50% solution to obtain a 30% solution?
Want to view steps to solve.
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12/08/16

Find L, the fathers age in three years time, in terms of k
A boy is k years old. His father is presently four times as old as he is. Find L, the fathers age in three years time, in terms of k
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12/08/16

math question
Imagine a grassy hill with wild sunflowers growing on it. Every day, the number of sunflowers doubles. After 64 days, the hill is completely covered in sunflowers. How many days did it take for the... more
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12/08/16

Lia, Phil and Cam collect a total of $200.30. Phil collects $12.80 more than Lia. Cam collects 3 times as much as Lia. How much does each person collect?
I need the equation for this problem
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12/08/16

math question
It takes 7 machines 7 minutes to fabricate 7 pieces of aluminum. How long does it take 140 machines to fabricate 140 pieces of aluminum?
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12/08/16

math question
A used iPhone and case cost $220 together. The iPhone costs $200 more than the case. How much does the case cost?
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12/08/16

Math Question
If some of Tucson's residents have brown eyes and some of Tucson's residents are women, is the statement "Some of Tucson's residents are brown-eyed women" true, false, or unsubstantiated?
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12/08/16

How many CDs did she purchase?
At a local electronic store, CDs were on sale. Some were priced at 14$ and some were priced at 12$. Sabrina bought 9 CDs and spent a total of 114$. How many CDs did she purchase?
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12/08/16

How much of a 10% acid solution must be added to 30 gallons of a 25% solution to get a solution that is 15% acid?
I can't seem to find me notes on these types of problems and my homework is due tomorrow!
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12/08/16

A gym charges $45 to join plus $30 per month. Another gym charges $60 to join plus $20 per month. How many months can you be a member and the cost be the same
A gym charges $45 to join plus $30 per mont. Another gym charges $60 to join plus $20 per mont. How many months can you be a member and the cost be the same?
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12/08/16

Word Problem
A dealership loans Tito $17,500 to buy a car with a 5.5% interest rate compounded monthly. if the length of the loan is 4 years, how much will Tito be charged for the car? 
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12/08/16

Calculus question
The function r(t) is the rate that knee replacement surgeries are performed in the United States in thousands of surgeries per month and t is the number of months since the beginning of 2014. There... more
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12/08/16

What is the interest rate on the account?
$4,000 was invested in an account 3 years ago. The account compunds the interest monthly. Today that investment is worth $4500. What is the interest rate on the account?/  
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12/08/16

In Smithville there were 242 teachers in 1990 and 323 teachers in 2000. Find the percent change in the number of teachers in Smithville during this time
 Round to the nearest 10th of a percent 
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12/08/16

how high is a tree that casts a 39 ft shadow at the same time a 8 ft post casts a shadow which is 10 ft long?
How tall is the tree?  
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12/08/16

Compound Interest
This section of word problems are killing me :-( the formula is kind of confusing?     How much money should you deposit into a certificate of deposit that pays 4% a year compounded continuously... more
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12/08/16

Find a polynomial​ P(x) with real coefficients having a degree​ 6, leading coefficient 4​, and zeros 3​, 0​ (multiplicity 3), and 4-4i.
i need to know how to make this equation  
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12/08/16

How many members were in the club? How much did each one contribute?
The members of a computer club each contributed an equal amount to buy a printer. If there had been three more members, each member would have contributed $10 less. If there had been two fewer... more
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12/08/16

a fabric contains on average 2.2 defects per 200 yards. find the probability that a given piece of 200 yards of this fabric will contain no defects.
statistics word problem trying to find an answer of 11%
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12/08/16

Is 6'8'' in decimal form 6.8?
Omg why do I need a description for this question
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12/07/16

what are the 2 numbers?
The sum of two numbers is 31. Twice the larger number is 7 more than 3 times the smaller number. What are the numbers?
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12/07/16

July 2010 Q3
The product of the ages of a boy and his father is 900. In 2 years time the product of their ages will be 1040. How old is each today?
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