7,188 Answered Questions for the topic Math Help
Math Help
02/27/18
probability occuring
A radio disc jockey has 7 songs on this upcoming hour's playlist: 2 are rock songs, 3 are reggae songs, and are country songs. The disc jockey randomly chooses the first song to play, and then she...
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Math Help
02/27/18
Compute the probability of each of the following events:
An ordinary (fair) die is a cube with the numbers through on the sides (represented by painted spots). Imagine that such a die is rolled twice in succession and that the face values of the two...
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Math Help
02/27/18
find the length of each side. Note that the figure is not to the scale.
The perimeter of a geometric figure is the sum of the lengths of its sides. If the perimeter of the pentagon (five-sided figure) to the right is 112 meters, find the length of each side. Note that...
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Math Help Math Word Problem
02/26/18
60 liters of a 70% acid solution. He currently has a 50 % solution and a 80 % solution. How many liters needed 60 liters of 70 acid solution?
Gabe Amodeo, a nuclear physicist, needs 60 liters of a 70% acid solution. He currently has a 50% solution and a 80% solution. How many liters of each does he need to make the needed 60 liters of...
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Math Help
02/26/18
When 23 is subtracted from 3 times a certain number, the result is 31. What is the number?
it is the same question as above.
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Math Help
02/26/18
An older person is 7 years older than four times the age of a younger person. The sum of their ages is 17. Find their ages.
it is the same question as above.
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Math Help
02/26/18
The function f(x) = 2x2 + 3x + 5, when evaluated, gives a value of 19. What is the function’s input value? 1
The function f(x) = 2x2 + 3x + 5, when evaluated, gives a value of 19. What is the function’s input value?1
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Finding the endpoint
if T (6, 2) is an endpoint of segment TR & M (-1, 0) is the midpoint of segment TR, then what are the coordinates of R, the other endpoint
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02/26/18
solving by formula
So the formula i was given was this:
x= -b± root b^2 -4ac /2a
for the equation ax^2+bx+c=0
and idk how to plug this into it
2x^2 +1 = 7x
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Math Help
02/25/18
The Jayden family eats at a restaurant that is having a 15% discount promotion. Their meal costs $78.65 before the discount. The family is planning to leave a
20% tip. Taxis 9%. what is the total cost of the meal? with description PLEASE!!!!!!!!!!!!!!!!!!!!
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Math Help
02/25/18
Steven earns extra money babysitting and charges $17.25 for three hours and $40.25 for seven hours. Enter an equation that represents the relationship where
X represents the number of hours Steven babysits and Y represents the amount he charges
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Math Help
02/25/18
Kevin purchased n notebooks they were 4 dollars each wrote an equation to represent the total cost That Kevin paid
N notebooks each cost 4 dollars each
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Math Help Math Word Problem
02/25/18
a cuboid has a volume of 96cm3 if the length width and hight are all whole numbers how many sets. of numbers can you have that work?
ok so I managed to do it with the other numbers but it took me a very long time what method would you suggest?
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Math Help Math
02/24/18
Write the range of H using set notation
The function h is defined as follows for the domain given.
h(x)=2-2x
domain {-1,0,1,2}
Write the range of H using set notation
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Math Help
02/24/18
what two reasons why was Japan often isolated from the other countries?
what are two reasons japan isolated the other countries
Math Help Volume Of A Cylinder
02/23/18
The volume of this cylinder is 8,167.14 cubic centimeters.The height is 9 centimeters. What is the radius?
The volume of this cylinder is 8,167.14 cubic centimeters. What is the radius? Use 𝜋 ≈ 3.14.
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Math Help
02/23/18
the elevation in denver colorado is 13 times greater than that of waikapu, hawaii. the sum of their elevations is 5600 feet. find the elevation of each city
I do not have to solve the problem but I need to declare the variables I would use to solve it and also formulate a system of 2 equations that could be used to solve it
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Math Help
02/23/18
two angles are suppkementary. the measure of the first angle is 10 degrees more than three times the second angle. find the measure of each angle
i need to declare the variables I would use to solve the problem and formulate a system of two equations that could be used to solve each problem. I do not need to solve the problems
Math Help Math
02/23/18
Starting with 145 grams of a radioactive isotope, how much will be left after 4 half lives?
The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass. Starting with 145 grams of a radioactive isotope, how much will be...
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Math Help Math
02/22/18
What will the resale value be after 4 years?
A car is purchased for $16,500. After each year, the resale value decreases by 35%. What will the resale value be after 4years?
round your answer to the nearest dollar
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Math Help Math
02/22/18
Starting with 160 grams of a radioactive isotope, how much will be left after 5 half lives?
The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass. Starting with 160 grams of a radioactive isotope, how much will be...
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Math Help Math
02/22/18
What will the area be after 11 years
a certain forest covers an area of 1800km^2. Suppose that each year the forest decreases by 5.75%. What will the area be after 11 years?
round your answer to the nearest square kilometer
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Math Help
02/22/18
The sum of three times the larger of two integers and twice the smaller is -28. The difference between the two integers 4. What are the two integers
The options are: four And eight, -4 and zero, -8 and -4, eight and 12
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