Mathematics

Hyperbole and line help

Find hyperboles y=-5/x and the line 7,5x +3y -7,5=0 cutting points. First I did this: 7,5x +3y -7,5=0 3y=-7,5x +7,5 | /3 y=-2,5x +2,5 (To get it into y=ax +bx form) Now I know that y equals -2,5x +2,

Find data values corresponding to this z-score?!?!

A normal distribution has a mean of 85.7 and a standard deviation of 4.85. Find data values corresponding to the values of z in z = 0.85-z = (μ - x) / σ z = (mean - score) / sd 0.85 = (85.7 - score) /

If x is a positive integer, what is the sum of all the values of x for which 463 appears in the sequence

In a sequence of 10 terms, the first term is 1, the second term is x, and each term after the second is the sum of the previous two terms. For example, if x=11, the sequence would be 1, 11, 23, 35, 58

How do you find ratio of a right triangle to its perimeter

This is probably very simple, but I cant remember how to find a ratio. :) Find the ratio of the longest side to the perimeter of the right triangle. It is a right triangle. The bottom17 feet. One

Statistics: Test Statistics and Standardized Test Statistics

H0: µ1 ≤ µ2, a = 0.01 Sample statistics: ẍ1 = 45, s1 = 4.8, n1 = 16 and ẍ2 = 50, s2 = 1.2, n2 = 14 Assume Ơ 2/1 ≠ Ơ 2/2 a) Find the test statistic b) Find the standardized test statistic c) Decide whe

Help with these math problems ?? 10 points

If you could help me with these questions and also show me how to do them i will thank you so much :) You help your dad build a dog house for your dog. You tell him that it would be easy to build a d

How to use synthetic division and the factor theorem to determine if x - c is a factor of f(x).

for f(x)=3x^3+8x^2-8x-20; x+3 Is x+3 a factor of f(x)?--3 |... 3 ... 8 .. -8 .. -20 ....|........ -9 ... 3 ... 15 ....------------------------------- ........ 3 .. -1 ... -5 .. -5 No, (x + 3) is no

How do I solve 1/(sec(x))-(tan(x))

I dont understand how to get rid of the subtraction sign.-1/[sec(x) - tan(x)] * [sec(x) + tan(x)]/[sec(x) + tan(x)] [sec(x) + tan(x)] / [sec²(x) - tan²(x)] sin² + cos² = 1 tan² + 1 = sec² sec² - tan

How come calculus isnt mandatory in american schools

In countries like china or india 99% of high school students take calculus. So why dosent the united states make it mandatory so 99% of american students will take it as well?-Because for very many jo

Help with Volume of a Cone

Please take a look at this problem here: http://i54.tinypic.com/2nlvm7c.jpg Im trying to find the volume of the shaded part of the cone. Normally, it would be 1/3 pi r squared H and I would usually

Multiply and give the

answer in trigonometric form [12(cos45degrees + isin45degrees)] x [3(cos20degrees + isin20degrees)] Please and thank you so much-[12(cos45 + isin45)] x [3(cos20 + isin20)] = 36[(cos45cos20 - sin45si

Write in standard form. y=(3/2)x+(3/4)

a.) - 6x + 4y = 3b.) x = ( 2 / 3 )y - ( 1 / 2 )c.) y = 6x - 1d.) 4y = 6x + 3-part a -6x+4y =3

Why isn't this a "complementary event"

rolling a 2 with a die, rolling an odd number with a die-Two complementary events have to cover all the possibilities. If you dont get an odd number, do you have to get a 2? Is that the only other pos

Need help with implicit differentiation - calculus

if you are asked to find implicit differentiaion... you have to take the derivative of both sides? and then what? what is the method?-Take the differentiation of both sides, and isolate dy/dx in most

The point (5,4) lies on a circle....length of the radius

The point (5,4) lies on a circle. What is the length of the radius of this irle if the center is located at (3,2)? Do i need to use the midpoint formula?-The radius of a circle is the distance from th