147 Answered Questions for the topic Problem

Problem

04/05/16

Which one of the following describes sample?
a. 100 students from a schoolb. All students in a schoolc. All teachers in a school.d. All office staffs in a school.
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03/23/16

2 - x less than or equal to 5 and 2x + 1 greater than or equal to -8 (solve and graph)
2 - x less than or equal to 5 and 2x + 1 greater than or equal to -8 (solve and graph)   help please, thank you 
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03/15/16

A family spent 25% of it's montly income on rent. If they spent $760 a month on rent what was their monthly income?
I don't understand  
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03/09/16

Stoichiometry Problem
LiOH + HBr → LiBr + H2O -If you start with 10.0 grams of lithium hydroxide, how many grams of lithium bromide will theoretically be produced?-How many water molecules will you produce if you start... more
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02/22/16

Suppose the Sunglasses Hut Company has a profit function given by P(q)=-0.03q^2+4q-34
Suppose the Sunglasses Hut Company has a profit function given by P(q)=−0.03q^2+4q−34, where q is the number of thousands of pairs of sunglasses sold and produced, and P(q) is the total profit, in... more
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Problem

02/21/16

Through (9, 4); perpendicular to the line y = 7
I need the answer pleas 
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Problem

02/05/16

of these numbers which ones total $1,560.29
Of these # which ones added together total $1560.29? 35.61 28.50 11.79 19.90 867.86 45.67 23.36 1095.00 480.58 102.00 527.60 101.77 223.89 302.38 41.09 392.48 978.10 63.15 27.59 25.00 118.69 198.86... more
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11/10/15

Reversible reaction problem
1) What would happen to the amount of products formed in the following equilibrium in the following circumstances (explain your answers)? The forward reaction is endothermic.   CH4(g) + H2O(g) ?... more
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11/08/15

David Chow earns 42,000 a year
David Chow earns 42,000 a year. He is paid weekly. He is married, has no depnedents, and claims 2 withholding allowance for federal income tax purposes. The state tax rate is 2% of taxable income.... more
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Problem Worded

11/05/15

A worded problem
Redlands School sent x students to a revision day. St Samuels School sent twice as many students as Redlands School. Francis Long School sent 7 fewer students than Redlands School. Each student... more
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Problem Fraction Word

10/24/15

Fraction Word problem?
On their vacation the Reikos spent 1/4 of their money on gas, 1/4 on food and lodging,and 1/8 on tourist attractions. What fraction of their money did they spend? If they started with $840 how much... more
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Problem Math Algebra Graph

10/18/15

please help
The graph shows the lines 5x+4y=7 and x-3y=9. Based on the graph, estimate the solution of the system of equations:   5x+4y=7 x-3y=9
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10/18/15

please help
Use substitution to solve the following system of equations:   4x-y=5 2x+3y=-8
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10/18/15

please help
Use addition to solve the following system of equations:   2x+3y=5 4x+y=-5
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10/18/15

please help
Perform the following computations, leaving your answers in scientific notation:   A) (4.1x10^5)(3.0x10^-2)   B) (1.2x10^-4)(2.0x10^7)÷(6.0x10^9)
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10/16/15

help please
Simplify these expressions:   A) {(2x^2y^3)÷(3xy^4)}^2   B) {(x^3y^-2)÷(x^-1y^5)}^-1
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10/16/15

help please
Perform the indicated operations:   A) (2x^3-3x^2+x-1)-(x^3-3x+4)   B) (x^2-2x-1)(x+3)
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Problem Math Algebra Factor

10/16/15

help please
Factor the following polynomials completely:   A) 3x^4-12x^2   B) 4x^2-12x+9   C) 6x^2-x-12   D) 3x^3+3x^2y-18xy^2
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10/06/15

Inequalities
On my math paper I had the following equation:   5/4(x+4) ≤ ½(x+8) -8   This is my work:   5/4(x+4) ≤ ½(x+8) -8 4(5/4(x+4) ≤ ½(x+8) -8) 5(x+4) ≤ 2(x+8) -32 5x+20 ≤ 2x+16-32 -2x    ... more
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Problem

10/01/15

The second and third digits are the same. The first and last digits differ by the second. The first digit is also a perfect cube.
The second and third digits are the same. The first and last digits differ by the second. The first digit is also a perfect cube.
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Problem

09/12/15

a wire of length 60 cm is cut into 2 parts. Each part is then bent to form a square. If the total area of the two square is 117 cm^2, find the perimeter
a wire of length 60 cm is cut into 2 parts. Each part is then bent to form a square. If the total area of the two square is 117 cm^2, find the perimeter
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09/09/15

Word problem equation help
When a city had 21000 inhabitants, there were 250 businesses operating there. For every new 150 residents, one more business opened. Write an equation that relates the number of people in the city... more
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Problem

09/07/15

what is the length of the diagonal in cm?
The width of a rectangle is 6 less than twice it's lenght. If the area of the rectangle is 23 square centimeters.
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09/06/15

You’ve been asked to make a 50 mL of 2% dextrose solution from a 30% dextrose stock. How much diluent will you need for the mixture? How much stock would you ne
You’ve been asked to make a 50 mL of 2% dextrose solution from a 30% dextrose stock. How much diluent will you need for the mixture? How much stock would you need to make 150 mL of 5% solution?
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09/06/15

1 mol of carbon-12 contains 6.022 x 1023 carbon-12 atoms with a mass of 12 g.
1 mol of carbon-12 contains 6.022 x 1023 carbon-12 atoms with a mass of 12 g. A. Calculate the mass of one carbon-12 atom. Express your answer using scientific notation.B. Calculate the number of... more
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