03/17/19

An appliance store decreases the price of a 19-in. TV set 21% to a sale price of $500.47. What was the original price?

An appliance store decreases the price of a 19-in. TV set 21% to a sale price of $500.47. What was the original price? Round to nearest cent
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03/17/19

Compute the probability of each of the following events

Event A: The sum is greater than 8. Event B: The sum is divisible by 6
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03/17/19

The difference between 14 and a number is 7 more than twice the number
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03/15/19

Is f(x) = 2x an injective function?
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03/15/19

How do I solve analytically x=ln(1−x)x=ln⁡(1−x)?
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03/15/19

Determine the value of A so that x+1 is a factor of x^3+k^2x^2-2Ax-16. What is the solution to this?
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03/15/19

How can I prove that (CSC^2x) (secx) = secx + cscx (cotx) by working the left side only?
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03/14/19

If f(x)=x2−25x−5f(x)=x2−25x−5, then is it possible to find f′(5)f′(5) since x≠5x≠5for the original function?
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03/14/19

What is the difference (if any) between "not true" and "false"?
A fairly simple question I hope someone can help me with.
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03/14/19

The line with the equation B + 2a =0 coincides with the terminal site of an angle X in standard position in quadrant IV what is tangent X
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03/14/19

Is the derivative function typically "worse" than the original function?
For instance, the absolute value function is defined and continuous on the whole real line, but its derivative behaves like a step function with a jump-discontinuity. For some nice functions,... more
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03/13/19

MATH HELP PLEASE
It took Barry 5 hours to travel to NY. He travelled by bus and plane for a total distance of 1320km. If the bus averaged 40km/h and the plane averaged 600km/h, how long did Barry spend on the plane... more
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03/13/19

I need help solving this equation
The temperature T, in degrees Fahrenheit, t hours after 6 AM is given by: T(t) = − 1 2 t 2 + 8t + 32, 0 ≤ t ≤ 12 What is the warmest temperature of the day? When does this happen?
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03/12/19

Number problems and Consecutive

Set up the equation for the following word problem and solve the equation. Let x be the unknown number. -84 times a number minus 5 is equal to -28 less than the number
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03/12/19

What is the equation of a line that is parallel to y=3/5x-7 and passes through (15,8)
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03/12/19

I'm asking about conventions of roots, the length of the bases and heights when the area is given.
The area of an animal pen is 30 square feet, what are the lengths of the pen's side if the pen is a right triangle with a height five times the length of the base.
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03/11/19

How much blue and yellow paint should a store mix to make 50 gallons of green paint? the ratio is 3 to 4.

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03/11/19

what other jobs did amelia earhart have
what jobs did amelia earhart do hart do before she was a piolet
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03/11/19

You have a $100 bill. You want to make change into an equal number of $20 bills, $10 bills and $5 bills. Is it possible? If so, tell how many of each bill you have.Can you write this as an equation?
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03/11/19

Normal Approximation and Binomial Random Variable
A fair pair of dice is rolled 120 times. Find the probability that the same point comes up on both dice at least 25 times. Pr[X ≥ 25]
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03/11/19

The length of a rectangle is 1 ft longer than its width. Find the dimensions of the rectangle so that its perimeter is 613 ft
Than Find the area of the rectangle as well.
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03/10/19

need help to write the standard form of the equation below
through: (-4,-5), perpendicular to y=-4/7x+3
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03/08/19

If one brick is 8" x 4" x 2", how many bricks would make a 18" x 24" x 5"?
One brick is 8 inches in length, 4 inches wide and 2 inches thick. How many bricks would make a 18" x 24" x 5"?
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03/08/19

C(x)300x+2000 R(x)=400x
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03/08/19

What are the elements?
Rewrite the P by listing it's elements P={y|y is an integer and -4~y<-1}
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