59,605 Answered Questions for the topic Math

Math Calculus

05/12/24

The population of endangered species is changing at a rate of P′(t) = 30 − 20t.

The population of endangered species is changing at a rate of P′(t) = 30 − 20t. The known population at the time is a community of 200. Time is represented as the variable t. a) What would the... more
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Math

05/12/24

3x - 7y = 4 and -6x + y = 5
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Math

05/12/24

Permutations and Combinations
There are 18 mathematic majors and 325 computer science majors at a college. In how many ways can one representative who is either mathematic major or computer science major be picked?
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05/11/24

Probability math
A chemist makes repeated measurements of the pH value in two lakes, A and B. The measurements are affected by random error that is normally distributed. The results are given by the following... more
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05/11/24

Probability math
There are two kinds of potato, A and B. The question is if the reason if one gets eaten by worm is because the worms prefer one of the kinds. From 200 samples of potatoes from each kind 12 of A and... more
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Math Calculus

05/11/24

Find the derivative
Find the derivative of the equation. y=(2x4-5e-x^2)(cubic root(x2-4x+4))
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Math Calculus

05/11/24

Math question
Find the integral of the function using definition of integral. b=6 a=2 (3x2-4x-1)Thank you
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05/10/24

Probability math
Every mushroom is edible with the probabiloity 0.95, independent of other picked mushrooms.What would be the the probability that 300 are edible amongst 320 picked? And how many mushrooms would... more
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Math

05/10/24

Which ordered pair is a solution of the equation?
y=-3x-4
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Math

05/09/24

The members of the city cultural center have decided to put on a play once a night for a week. Their auditorium holds

The members of the city cultural center have decided to put on a play once a night for a week. Their auditorium holds 600 people. By selling​ tickets, the members would like to raise $3900 every... more
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Math

05/09/24

Nine subtracted from w is greater than or equal to -22
Nine subtracted from w is greater than or equal to -22
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Math

05/08/24

In a game, you have a 1/22 probability of winning $135 and a 21/22 probability of losing $10. What is your expected winning?
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Math

05/08/24

Help me answer this
Joyce had $75 and Leslie had $48. After each spent the same amount of money, the ratio of the amount of money Joyce had to the amount of money Leslie had was 7 : 4. How much did each of them have left more
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Math

05/08/24

Which graph represents

3x-5y> 10
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Math

05/08/24

Daniel had 2 2/5 gallons of gasoline in his gas can. he used 1/3 of it to mow the lawn. How much gas does he have left
2 2/5 gallons used 1/3 to mow the lawn. How much gas does he have left?
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Math

05/08/24

Complete the equation of the line through

(-10 3) and (-8 -8)
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Math

05/08/24

you have been considering saving for a vacation trip that on average costs $2,000.

 Now imagine you have $400 in discretionary money, how much would you save toward a vacation trip?
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Math

05/07/24

Calculate the capacity of the tank
An empty fuel tank is filled using a cylindrical pipe with diameter 8 cm. Fuel flows along this pipe at a rate of 2 metres per second. It takes 24 minutes to fill the tank.Calculate the capacity of... more
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Math

05/07/24

SUBMARINE QUESTION
a submarine desendes -54 8/9 meteres. if it desendes another 60 1/8 meters , what is its new depth?
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05/07/24

Geometry+trigonometry exercise
I can't get ahead with it. Could you possibly give me some help on how to get started?So this is the task:The side lengths of a triangle are a, b, and c. We know this a+b=3c. Let us prove that... more
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05/07/24

If you randomly choose your ride twice, what's the probability that you'll use a cab exactly one time?
In the morning, you have 3 transportation options (take a bus, a cab, or a train) to work, and in the evening she has the same choices.
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Math

05/07/24

Math Question - Planes
Plane A and plane B each took two trips. Plane A flew 2,172 miles on its first trip and 1,832 on its second trip. Plane B flew 1,739 miles on its first trip and 1,346 miles on its second trip.How... more
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Math

05/07/24

Two equations are given below: a − 3b = 4 a = b − 2 What is the solution to the set of equations in the form (a, b)?

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Math

05/07/24

isosceles trapezoid has a perimeter of 72.4 inches. Its shorter base measures 14.7 inches and its longer base measures 18.5 inches. The two remaining sides have the same length; what is that length?

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05/07/24

Find the time required for the amount to double and triple.
You invest $3500 in an account at interest rate r, compounded continuously. Find the time required for the amount to double and triple. (Round your answers to two decimal places.)r = 0.0435
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