05/18/20

i need help with this please

Suppose that the weight of seedless watermelons is normally distributed with mean 6 kg. and standard deviation 1 kg. Let X be the weight of a randomly selected seedless watermelon. Round all... more
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05/18/20

The length of a rectangle is 1 foot less than twice the width. The area is 55 square feet. Find the dimensions of the rectangle.
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05/18/20

algebra word problem
Cora can stuff an a pile of letters in envelopes in 3 hours. Lopes takes 4 hours to do the same job. How long would it take them to do this job if they worked together?
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05/18/20

What is the experimental probability of rolling a 6

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05/18/20

Population Parameters
You conduct a survey and find that 422 seniors out of 813 plan to go to college. What is the margin of error for your survey? Give your answer as a whole percent. Remember to include your % sign.
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05/16/20

Card deck Probability

You pull out a card from a standard deck four times in a row, with replacement each time. Determine the probability that exactly two hearts turn up. 
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05/15/20

a. If the area of a square is 625 cm squared​, what is its​ perimeter? b. If the perimeter of a square is 76 cm​, what is its​ area?
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05/14/20

How do you solve this?
A certain flight arrives on time 88percent of the time. Suppose 124flights are randomly selected. Use the normal approximation to the binomial to approximate the probability that ​(a) exactly... more
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05/14/20

Dominique is covering a shoebox with construction paper for Valentine’s Day. If the box is 24 centimeters long, 12 centimeters wide and 11 centimeters tall, how much construction paper is needed?
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05/13/20

i do not understand what to do for this problem

Consider the roll of quarters. The diameter of a quarter is 24.26 mm. Each quarter is 1.75 mm thick (hint: height of each quarter). What is the approximate volume of the roll of quarters? Use... more
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05/10/20

find an equation of the circle that has center (-2,2) and passes through (1,-4)
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05/09/20

What is an example of a quadratic equation that has two solutions but cannot be solved by factoring
What is an example of a quadratic equation that has two solutions but cannot be solved by factoring. and how do you know it cannot be solved by factoring.
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05/08/20

what is the rangeof the land area of tge seven continents
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05/07/20

the probability
A computer is selected to pick a random number between 1 and 900. Find the probability that it will pick a number less than 500.
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05/05/20

if x and y are acute angles such that csc x = 5/4 and cos y = 15/17, find the exact value of sin (x-y), cos(x-y), cos 2y, sin 2x
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05/05/20

Find the values of θ knowing that the cos (θ) = sqrt 3/ 2
Find the values of θ knowing that the cos (θ) = sqrt 3/ 2
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05/03/20

Elementary Math
The nation's wealth in 2007 was about $72 trillion dollars. About how much money did the richest 1% of Americans control? (Recall that they controlled 42% of the nation's wealth.)
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05/03/20

A normal population has mean 7 and standard deviation 7. What is the probability that a randomly chosen value will be greater than 4?
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04/30/20

An airplane can travel 425 mph in still air. If it travels 1772 miles with the wind in the same length of time it travels 1628 miles against the wind, what is the speed of the wind
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04/30/20

What is the probability of P(AUB), if P(A)=0.23, P(B)=0.41, and P(AnB)=0.12? Express the result as a decimal rounded to the nearest hundredth.
Express Result as a decimal to the nearest hundredth
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04/30/20

39.4% of the students attend after school sports on Monday and 27.3% attend extra help on Monday. If a student is selected at random what is the probability the student attends sports or extra help?
Express the result as a percentage rounded to the nearest tenth
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04/30/20

What two numbers have a product of -100 and a sum of 0
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04/29/20

algebra word problem
At an amusement park you get 5 points for each bull eyes you hit, but you lose 10 points each time you miss. After 30 tries yolansa lost 30 points. How many bull eye did she have.
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04/28/20

All three dimensions of a cube are reduced to one-fifth their original length. If its original volume was 875 cubic units, what is its new volume?

The answer choices are: 7 cubic units 273 cubic units 448 cubic units 1512 cubic units
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04/28/20

Compound inequality
The width of a rectangle is 4 more than twice the length. If the perimeter of the rectangle has to be between 20 and 50 ft, write a compound inequality for the length of the rectangle. 
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