1,081 Answered Questions for the topic Equations

08/07/17

Solve by completing the square.
x^2-8x=-13
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08/07/17

Solve the formula for r.
36(r-4)^2=A
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Equations College Algebra

08/07/17

Solve the equation.
1/a-1/3=1/a-2
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Equations Math Functions

08/07/17

The function f(x)=5x+1 is one-to-one.
Find an equation for f-1(x), the inverse function.   f-1(x)=
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08/02/17

If a line through the points (8, 2 and (-2, y) is perpendicular to the line 5x + 8y=34 find the value of y.
 please.help. im clueless
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Equations Chemistry

07/27/17

balanced net ionic equation how to do this
Show the balanced net ionic equation and list spectator ions when a solution of potassium iodide and lead (II) nitrate react to produce a precipitate of lead (II) iodide suspended in a solution of... more
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Equations Hyperbola Asymptotes

07/24/17

Equation of hyperbola
Find an equation for the hyperbola that satisfies the given conditions:   Foci (0,±6), asymptotes y=±(1/3)x
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Equations Math Algebra 2 Geometry

07/24/17

Find the coordinates of the point of intersection algebraically. (Break-even point)
Word problem goes as followed:  A recording company invests $18,972 for the set-up cost for producing a master tape of a band and it costs $1.90 to make each copy of the master tape. Each tape (t)... more
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07/21/17

Solve chemical reaction for temperature of exothermic reaction (thermite)
Hi there, I I have a question about Physics/ chemistry.If I have a bag of iron oxide(lll) and powdered aluminium in the ratio of 3:1 totalling 72g, with 54g being Fe2O3 and 18g of 2Al, what would... more
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Equations

07/20/17

According to projections through the year​ 2030, the population y of the given state in year x is approximated by State​ A:   -5x+y=11300 -138x+y=7000
The equation are listed on rows. -5x+y= 11300                                                  -138x+y=7000  
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Equations

07/20/17

Two mathematics classes have a total of 410 students the 8 a.m. class has 40 more than the 10 a.m. class how many students are in the 10 a.m. class
 Studying for a math test
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Equations

07/14/17

Taxi charges are $3.75 plus $1.53 per kilometre for any trip in Sydney. If Elena’s taxi farewas $42.00, how far did she travel?
can u show me the working out plz!
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Equations

07/06/17

Defining functions of x
Determine if the following equations define functions of x:   a. y=√x+5   b. x2+y2=5
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Equations

06/02/17

10 players on a team, 2/5 are girls, how many grils on a team?
   1
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Equations Chemistry Elements

05/29/17

If 16.5 g of Al are reacted with 39.2 g of chlorine gas, then aluminum chloride is formed.
Which reactant is the limiting reactant? What is the theoretical yield?   Formula: 2 Al + 3 Cl2 = 2 AlCl3 (already balanced)   Show all work for the two questions please
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05/24/17

Pose a system of equations to find the number of new books that have been sold. Calculate how many books were sold with a 50% discount.
In an online shop, 800 copies of a textbook have been sold, including new and used ones, and a total of 7110 euros has been obtained. A new books costs 10 euros, while the used ones are sold at a... more
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Equations

05/23/17

find 2 consecutive even integers such that the square of the second, decreased by twice the first is 52
find 2 consecutive even integers such that the square of the second, decreased by twice the first is 52
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Equations Math Algebra 1 Xy

05/11/17

Which of the following equations has both 2 and −4 as solutions?
Which of the following equations has both 2 and −4 as solutions? a. x2 + 6x + 8 = 0 b. x2 - 2x - 8 = 0 c. x2 + 2x - 8 = 0 d. x2 - 2x + 8 = 0
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05/10/17

The perimeter of a rectangle is 24 ft. Length is 4 ft longer than width. Let x be length and y be width.
Write the first equation- 2x+2y=??   Write the second equation- x=y+??   What is the length ??   What is the width ??
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Equations Chemistry Moles Grams

05/10/17

What is the percent yield? - Show Work Please
Question: If the reaction of 20.7 grams of CaCO3 produces 6.81 grams of CaO, what is the percent yield?   Equation: CaCO3 = CaO + CO2
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Equations Fractions

05/10/17

solve: -9/28x + 24/28x +6x please show step by step
solve: -9/28x + 24/28x +6x please show step by step
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Equations Math Math Equation

05/08/17

What is 10n = 5n + 5?
It's an equation I need to learn
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05/08/17

Evaluate the expression. 12(4^3 − 6 * 3^2)
Big Ideas Math saids that I am wrong even though I think I am right.
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05/08/17

What is the answer to the problem?
Ben and Patrick work the closing shift at the same restaurant but on different evenings. The average time it takes Ben to close the restaurant is 125 minutes. This is 20 minutes more than the time... more
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Equations Functions Of X

05/07/17

Define functions of x
Determine if the following equations define the functions of x:   a. y=√x+5   b. x2+y2=5  
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