10/24/17

trigonometry

To the nearest tenth degree, find the acute angles of a 5-12-13 triangle and a 9-12-15 triangle. This enables you to calculate the angles of a 13-14-15 triangle. Show how and find another example... more

10/24/17

What is the 3-unit growth/decay factor?

The population of Northfield, New Jersey is expected to increase by 1.8% every three years. The population of Northfield in 2012 was 8,624 people. Let n be the number of years since 2009.

10/23/17

Between what levels (in dozens of doughnuts) do the daily sales vary?

A doughnut shop sells a dozen doughnuts for $7.95. Beyond the fixed costs (rent, utilities, and insurance) of $165 per day, it costs $1.45 for enough materials and labor to produce a dozen... more

10/23/17

f(x)= (9+tanx)^3/2 for -pi/4<x<pi/2

How do I solve this?

10/23/17

how do you cut and rearrange a 5x1 rectangle into a square?

Hi, I know this must somehow involve triangles and cut along the diagonal and this may sound weird, but I was manipulating a 5x1 piece of paper while watching a movie very tired and believed I had... more

10/23/17

Ben is 444 times as old as Ishaan. 666 years ago, Ben was 666 times as old as Ishaan.

Ben is 444 times as old as Ishaan. 666 years ago, Ben was 666 times as old as Ishaan.

10/22/17

i really need help with this

Calculate each number below. Which permutation or combination formula can each expression represent?  a. 7!×12c7=

10/20/17

b. Selecting 2 green balls from a bag of 4 green and 7 red balls if the first ball selected is

 b. Selecting 2 green balls from a bag of 4 green and 7 red balls if the first ball selected is not replaced.     The probability isGive answer as a simplified fraction

10/20/17

An online music streaming plan has no annual fee but charges $1.99 per song. Another plan charges an annual fee of $24 plus $.99 per movie watched. Write an

What would be an equation for this problem? Please, all I need is the equation...  

10/20/17

Solve for y-4/6= 3/4 simplify anwser as much as possible

thank you so much for helping me

Fill in the blanks

1. Your original Vitamin D intake was 8 micrograms and the doctor recommended you decrease your intake by 69%. Question: Part A:    Percent change in daily intake= ______%                Part... more

The value of Melvin's Alpha Biotechnology stock in 2013 is how many times as large as the value of his stock in 2014?

  In 2008 Melvin thought that he was making a sound investment by buying $100,000 worth of Alpha Biotechnology stock. Unfortunately, his investment has depreciated, losing 13% of its current value... more

10/19/17

standard deviation of means

The mean of the scores obtained by a class of students on a physics test is 42. The standard deviation is 8%. Students have to score at least 50 to pass the test.Assuming that the data is normally... more

Bob can row 9mph...

Bob can row 9 mph in still water. The total time to travel downstream and return upstream to the starting point is 3 hours and 36 minutes. If the total distance downstream and back is 26 miles,... more

One inlet pipe can

One inlet pipe can fill an empty pool in 8 hours, and a drain can empty the pool in 12 hours. How long will it take the pipe to fill the pool if the drain is left open?

If a dress costs £60 - £=1.31 and $=1.00, what is the cost in $?

Algebra word problem

A brand name has a 40​% recognition rate. The probability that exactly 4 of the 5 consumers recognize the brand name

A brand name has a 40% recognition rate. Assume the owner of the brand wants to verify that rate by beginning with a small sample of 5 randomly selected consumers. Complete parts (a) through (d)... more

10/18/17

Suppose f(x) = 3x^2 and g(x) = x-5 that the functions f and g are defined for for all real numbers x as follows. Write the expressions for (g+f)(x) and (g-f)(x)

Suppose f(x) = 3x^2 and g(x) = x-5 that the functions Write the expressions for (g+f)(x) and (g-f)(x)

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