08/17/17
I have a question involving simultaneous equations to find points on lines.
the two equations are as follows: y=3x^2-2x-20 and y=2x-5
You have to substitute one equation into another work out the two answers and then use the answers sub them into one of the...
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08/17/17
Physics questions NEED HELP
1.Making estimates. The human eye can detect as few as 9760 photons per second entering the pupil. About how much energy is this, per second? (Assume the photons have a wavelength of 300...
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08/17/17
If T is the temperature in degrees Fahrenheit then 5/9 (T-32) is the temperature in degrees celsius. Which temperature is the same in both Fahrenheit
and Celsius?
08/17/17
a painting is a square, 2x+8 inches on each side. find and expand an expression for the area of the painting.
answer should be simplified with all likes terms combined. thank you, much needed.
08/17/17
What is the equation for the following. Algebra translation.
How many copies can be made if there is a $2 charge to use the copy machine and copies are 5 cents a piece?
At the mall soda costs $1.50 and refills are 75 cents. How much does it cost to buy a...
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Calculus question
A 7m ladder is leaning against the wall. When the top of the ladder is slipping down at a rate of 2m/s, how fast is the bottom moving when it is 4m away from the wall?
HELP!?
08/16/17
Ted says that 3 tenths multiplied by 100 equals 300 thousandths. Is he correct? Use a place value chart to explain your answer.
I dont know how to make the place value chart with the numbers in the right places.
08/16/17
Annika earns $120 in 1 hour and 30 minutes at this rate how much money will she earn during 6 hours of the event
I really need help so help me please
08/16/17
A rectangle is three times as long as its wide. The perimeter is 36 cm. Calculate the length of each side
Just solve it ty
08/16/17
I have a calculus review test and our teacher gave us a problem I can't crack
(1/(a+h) - 1/a)/h
08/16/17
Word Problem
A motorboat can maintain a constant speed of 40 miles per hour relative to the water. The boat makes a trip upstream to a certain point in 33 minutes; the return trip takes 22 minutes. What is the...
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08/16/17
Word Problem
How many gallons of a90% antifreeze solution must be mixed with 6060 gallons of 20% antifreeze to get a mixture that is 80% antifreeze? Use the six-step method.
08/16/17
Word Problem
How much water should be added to 1 gallon of pure antifreeze to obtain a solution that is 95% antifreeze?
08/16/17
The Edges of a cube are each 14 inches long . What is the ratio of the number of square inches in the total....
please help me with this problem,
I only solved the first part of it but i'm getting confused with the rest
Thank you!
The Edges of a cube are each 14 inches long . What is the ratio of the...
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08/16/17
Is there any possible way for me to obtain the length of the side of a right triangle if i only know the angles measures (90,60,30)
I have a right triangle, but i only have the measures for its angles (90,60,30) Is there any way for me to find the length of one side
08/16/17
How tall is Susan's sister?
Susan is 166 cm tall and she casts a shadow about 55 cm long. Her sister, who is standing next to her, casts a shadow about 35 cm long. About how tall is Susan's sister?
08/16/17
Differentiation Confusion
If we expand (3x^2 - 1)^4 we get,
(3x^2 - 1)^4 = 81x^8 - 108x^6 + 54x^4 - 12x^2 + 1
If we derive (3x^2 - 1)^4 we get, (via chain rule)
24x(3x^2 - 1)^3
However if we derive (81x^8 -...
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08/16/17
What is 467 divided by 17? Express answer as a mixed number?
19 1/17
28 4/18
27 8/17
17 1/5
31 3/2
How do I change a number into a mixed fraction? Thank you
08/16/17
Which of the following quadratic equations has only one root?
4x2-12x+9=0 x2-3x+3=02x2-x-3=0 2x2-5x+3=0x2-12x+9=0
08/15/17
What is the increase in percentage?
In addition to an employee's $300 weekly salary, management has approved a 6% pay increase plus an extra $12 per week for travel expenses. In total, the employee will be receiving a __________...
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