59,485 Answered Questions for the topic Math

Math Algebra 1

05/15/24

I don't know how to solve this
A music website chargesx dollars for individual songs and y dollars forentire albums. Person A pays $25.92to download 6 individual songs and2 albums. Person B pays $33.93to download 4 individual... more
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Math

05/15/24

Series and sequence

Kevin runs a lawn mowing service. He currently has 14 clients. He has gained 2 new clients at the beginning of each of the past three years. Each year he mows each client’s lawn an average of 15... more
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Math Algebra 1

05/15/24

solve the system by elimination. Check your solution. −2x − 5y = 9 3x + 11y = 4
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Math Chemistry

05/14/24

Freezing point depression, activity
ln aS,2 = ln mi + ∑ (55,51/m)*d(− ln aH2O) = ln mi + I (1)How do I calculate aB,2 from that given formula?
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Math Chemistry

05/14/24

Freeze depression point, sugar in water, how do I calculate the activity?
I will give some background on the concept for context and then state my question at the end:Consider a solution containing nA and nB moles of solvent A and solute B, respectively. According to the... more
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Math

05/14/24

Mr. D has 10 more nickels than quarters. If he has a total of $3.80, how many quarters does he have?
Mr. D has 10 more nickels than quarters. If he has a total of $3.80, how many quarters does he have?
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Math

05/14/24

The first three terms of a sequence are given. Write your answer as a decimal or whole number. Round to the nearest thousandth (if necessary).
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Math

05/14/24

The longer leg of a 30 - 60 - 90 triangle is twice as long of its hypotenuse.
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Math

05/14/24

Line t passes through points (9, 9) and (1, 18). Line u is perpendicular to t. What is the slope of line u?
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Math

05/13/24

slope -1/5 point(10,-15)
y=-1/5x+?????
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Math

05/13/24

math problmens area
are, please look them up online!) Find the perimeter and the area of the rectangle with coordinates (1, 2), (7, 4), (8, 1), and (2, -1).
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Math

05/13/24

John is going to select two cards from a standard deck of cards. What is the probability that he chooses a king or a jack?
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Math

05/13/24

substitution/elimination
During one lunch hour, the school cafeteria sells 8 tuna sandwiches and 5 chicken sandwiches for $49.25. The next day they sell 4 tuna and 7 chicken sandwiches for $43.75. How much do they sell... more
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Math

05/13/24

substitution/elimination
The outdoors club held a car wash to fundraise. They washed cars for $5 and vans for $7 each. They washed 90 vehicles and earned $510. How many of each type of vehicle did they wash? (please solve... more
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Math Calculus

05/13/24

1) A water 3000 litter water tank is being filled up by the minute.
The rate at which the water is entering the tank can be described as Q′(t) = 3√t, where t is measured in minutes. a) Determine how much water will be poured into the tank within an hour. b) At what... more
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05/12/24

Probability math
Every mushroom is edible with the probabiloity 0.95, independent of other picked mushrooms.What would be the the probability that 300 mushrooms picked under a month are edible amongst 320 picked?... more
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05/12/24

sketch the curve given by each pair of parametric equations over the given interval
https://ibb.co/zh5fLw6photo of problem ^
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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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