19,133 Answered Questions for the topic Algebra

10/24/21

Find the rate of the plane in calm air and the rate of the wind. (Round your answers to one decimal place.)
A jet plane flying with the wind went 910 mi in 2 h. Flying against the wind, the plane could only fly 700 mi in the same amount of time. Find the rate of the plane in calm air and the rate of the... more
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10/24/21

Flying with the wind, a plane flew 480 mi in 3 h. Against the wind, the plane required 4 h to fly the same distance. Find the rate of the plane in calm air and the rate of the wind.
Flying with the wind, a plane flew 480 mi in 3 h. Against the wind, the plane required 4 h to fly the same distance. Find the rate of the plane in calm air and the rate of the wind.
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10/24/21

What is the cost per unit of gas.
During one month, a homeowner used 400 units of electricity and 100 units of gas for a total cost of $314. The next month, 300 units of electricity and 250 units of gas were used for a total cost... more
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10/24/21

What is the cost per foot of redwood and of pine.
A carpenter purchased 50 ft of redwood and 70 ft of pine for a total cost of $253. A second purchase, at the same prices, included 100 ft of redwood and 60 ft of pine for a total cost of $394. Find... more
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10/24/21

What is the cost per pound of the wheat flour and of the rye flour.
A baker purchased 15 lb of wheat flour and 13 lb of rye flour for a total cost of $19.05. A second purchase, at the same prices, included 11 lb of wheat flour and 10 lb of rye flour. The cost of... more
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Algebra

10/24/21

Please help solve algebra question
Find a polynomial function of degree 5 with -2 as a zero of multiplicity 3,0 as a zero of multiplicity 1, and 2 as a zero of multiplicity 1
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10/23/21

Give an expression for f(x) using only Real-valued coefficients, having degree 4, passing through the point (-3,-850), with roots x=-8, x=-2, and x=2+3i.
final answer should not have any i's.f(x)= _______ is a polynomial of degree 4 with the given roots and passes through (-3,-850).
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10/23/21

Give an expression for f (x) with leading coefficient -4, of degree 3, and having roots x=5, x=1+4i, and x=1-4i.
Give an expression for f (x) with leading coefficient -4, of degree 3, and having roots x=5, x=1+4i, and x=1-4i.final answer should not contain any i's. f(x)=_________ is a polynomial of degree 3... more
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10/23/21

Focus Problem- Math
For 87 days in the spring and summer of 2010, British Petroleum's Deepwater Horizon spilled millions of gallons of crude oil into the Gulf of Mexico, resulting in one of the largest oil spills in... more
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10/23/21

true or false diagonalisation
For each of the following statements, select True or False(i) Every square matrix is diagonalisable(ii) If an  matrix is diagonalisable then it must have n distinct eigenvalues (i.e. all of them... more
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Algebra Math

10/23/21

Algebra Assement

1. You have $150 to spend at a store. If you shoes cost $30 and belts cost $25, write an equation that represents the different ways that you could spend a total of $150. 2. Create a graph of the... more
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10/22/21

For f(x)=√(5x+10), find f′(x) using the definition f′(x)= lim, h→0, {f(x+h)−f(x)} / h . Then, using this, find the tangent line to the graph of y= √(5x+10) at x=3
For f(x)=√(5x+10), find f′(x) using the definition f′(x)= lim, h→0, {f(x+h)−f(x)} / h . Then, using this, find the tangent line to the graph of y= √(5x+10) at x=3. Enter all values as integers, or... more
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10/22/21

How does one take assumptions and certainties for granted?
How do people take assumptions and certainties for granted? Please explain I had trouble understanding this. What are some examples?
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Algebra Elementary Math

10/22/21

\frac{2\left(a+b\right)}{a+b+c}\:\:a=1,\:b=2,\:c=3
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Algebra

10/22/21

if a=1, b=2, c=3 then find the values of: a+2/b+3/c

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Algebra

10/22/21

distributed wattage calculation
x+y=100% but y is 25%greater than x. how do i find the values of each x and y
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Algebra

10/22/21

Solving a word problem using a system of linear equations
A store is having a sale on jelly beans and trail mix. For 2 pds. of jelly beans and 5 pds of trail mix, the total cost is $10. For 8 passengers. of jelly beans and 3pds of trail mix the total cost... more
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Algebra

10/22/21

The greater of two numbers is 8 more than 5 times the smaller. Their sum is 68. Find the numbers.

I really need help on this aspa so please hurry if you can
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10/21/21

Finding output of one step function that models a real world situation: Function notation

Deandre earns 41 dollars per week working part-time at a book store. He makes one dollar more for every book he sells.The amount, A (in dollars), that Deandre earns in a week If he sells “b” books... more
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10/21/21

Solving a percent mixture problem using a system of linear equations

A chemical company makes two brands of antifreeze. The first brand is 55% pure antifreeze.The second brand is 90% antifreeze.In order to obtain 140 gallons of a mixture that contains 70% pure... more
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Algebra

10/21/21

i need help with algebra
Deon needs to read 3 novels each month. Let N be the number of novels Deon needs to read in M months. Write an equation relating N to M. Then use this equation to find the number of novels Deon... more
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10/21/21

𝐴(𝑟)=3200(1+𝑟)4
If $3200 is invested at an interest rate, 𝑟, compounded annually, the amount in the account after 4 years is given by the polynomial function 𝐴(𝑟)=3200(1+𝑟)4. Here, r is used as a decimal, so if r=... more
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10/21/21

l+w+h=96 Packing Algebra Problem

l+w+h=96A) What is the formula for the volume of the box, in terms of l, w, and h? what’s the formula for volume of a box?Let’s simplify this case a little more. Suppose we have a box with a square... more
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10/21/21

 𝑁(𝑡)=11.9𝑡3+20.3𝑡2+22𝑡+757
The opening value of a stock index on the first day of trading from 1994 to 2010, can be modeled using the following polynomial: 𝑁(𝑡)=11.9𝑡3+20.3𝑡2+22𝑡+757,where 𝑡 is time in years since 1994. A)... more
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Algebra

10/21/21

I need help with this problem

Need help solving math problems E=mc2 m=3c=6
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