04/20/16

Expected Value - buyer
You can buy a lottery ticket for $1000. The odds are as follows:  1 in 10 tickets will pay $500. 1 in 100 tickets will pay $1000. 1 in 1000 tickets will pay $200,000. 1 in 10,000 tickets will... more
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04/20/16

Expected Value – seller
An insurance company sells a policy for $1000. Based on past data, an average of 1 in 100 policyholders will win a $20,000 claim on a policy, an average of 1 in 200 policyholders will win a $50,000... more
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04/20/16

Suppose that 9% of births are twins. If we assume no other multiple births (triplets, etc.), what percentage of the population are twins?
Hint 1:The answer is not 9% or 18%. Hint 2: Do not confuse the given percentage of births withthe percentage of the population. Hint 3: Use 100 births to calculate the answer.
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04/20/16

Caleb invested an amount of $7600 at an interest rate of 3%. What will the interest be after a year?
I need help with this question, please help me.
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04/19/16

Please help
The theoretical probability that you will participate in track and field is 2/7. There are 344 students in your grade. About how many students in your grade will participate in track and field?
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04/19/16

How many people swam?
556 people used the public pool. The daily prices are $1.50 for children and $2 for adults. The receipts for admission totaled $921. How many adults and children swam?
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04/19/16

Growth rate
272 (1.019)t WHat is the growth rate? What population is expected in 2022?
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04/19/16

Percentage growth of the expression
(400)(1.009)y   What is the percentage per year? Enter only positive value
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04/19/16

math help please taxes and percentages
1. Which of the following should be your top priority?Saving in an emergency fundpaying down low-interest credit cardssaving for retirement paying down high interest credit cards2. When you leave... more
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04/19/16

find the total surface area of the pipe including the interior. Measurements= 2.5in radius 12in hight and 2.2 in interior
i know the answer because our teacher told us but I dont know how to work it. 
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04/19/16

Geometry Question
A square and an equilateral triangle each have apothem of length 1cm. Which of the following statements is always true?I: The perimeter of the square is greater than the perimeter of the... more
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04/18/16

How many packages of plates does the WEbster family need to buy?
The webster family is planning a party for one-hundred people. The family needs one plastic plate for each person at the party. The shops sell plates in packages of fifteen for five dollars and... more
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04/18/16

Of the 40 foods items listed on a menu, 8 are appetizers, 4 are soups or salads, 26 are entrees, and 2 are desserts. Find the odds against selecting a dessert.
very, very important
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04/18/16

I need help solving this one too
Leilani is a graduate student breeding opihi in a laboratory setting. She found that optimal salt concentration for her experiment to succeed is 4%. If she starts off with 100 liters of 2.5%... more
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04/18/16

Saul used 3 7/10m of fencing o enclose 1/4 of a patio.
(a) Write a unit rate comparing the amount of fencing Saul used to the portion of the patio enclosed. (b) How much fencing is needed to enclose the whole patio? Explain your reasoning.    That... more
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04/15/16

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 $6000 invested for 6 years earns $3240.00 in interest, how much would be drawn by $4000 invested for 11 years?   a. $2160.00 b. $3245.00 c. $3060.00 d. $3960.00
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04/15/16

Can someone help me asap?
The annual Gross Domestic Product (GDP) of a country is the value of all of the goods and services produced in the country during a year. During the period 1985-1999, the Gross Domestic Product of... more
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04/14/16

Explain what happens to Helium as Hydrogen decreases in the Sun
I'm having trouble with my Science project. On the rubric it stated, "Students use the model to predict how the relative proportions of hydrogen to helium change as the sun ages". The teacher also... more
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04/13/16

Which point is closer to the bell tower? How did you determine this?
On the sidewalk facing the bell tower, a student located two points that are collinear with the bell tower. The distance between the two points was 29.5 feet. Using a protractor with a string... more
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04/13/16

A elevation word problem
Sarah's cat climed up a tree, that was 10 ft away. If she sees her cat at an angle of elevation of 35° , and her eyes are 5 feet off the ground, how high up from the ground is her cat
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04/13/16

Exoplanets are planets that orbit stars other than our sun
is it true of false
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04/12/16

Doctor orders 150 MG to be given every 6 hours. Child weighs 30 lbs. Your research indicates that 20-40 mg/kg/day is the recommended dosage.
Is this prescription safe for your child? If not what would a safe dose be  
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04/12/16

determine the simple interest. the rate is an annual rate. assume 360 days in a year. p=$300, r=4.5% t=2years
determine the simple interest. the rate is an annual rate. assume 360 days in a year. p=$300, r=4.5% t=2years
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04/12/16

Math word problem
Grandparents of a newborn put $10,000 in a bank account earning 4% interest compounded annually as a college fund. When the baby is 18 years old, how much money will be in the account?
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04/12/16

Word Problem.
You work for a design company and want to enlarge one of your deisgns for a new billboard sign. You can enlarge the design by 120% every time you run the program. The original design is 12 inches... more
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