Mathematics

Another QUADRATIC PROBLEM

im having some difficulties with this one to save fuel on the 240km trip to their cottage,the nakamura family reduce their usual average speed by 20km/hr,this lengthens the journey time by 1 hr. what

Integrate 2*sqrt(x^2+1) =

Hi, guys. Could you help me to solve this: integrate 2*sqrt(x^2+1) Thanks!-sqrt(1 + x^2) * dx x = tan(t) dx = sec(t)^2 * dt sqrt(1 + tan(t)^2) * sec(t)^2 * dt sqrt(sec(t)^2) * sec(t)^2 * dt sec(t)

How do I solve the equation for x? log(7x-2)-log(x-2)=1

How do I solve for x? im lost. Im working on converting to the equivalent exponential forms and solving logarithmic equations? Please help.. How do I solve the equation for x?log(7x-2)-log(x-2)=1-[Re

What is the slant asymptote

x^2-16/x i got x as the answer is this right?-The slant asymptote occurs when the numerator is one degree higher than the denominator. So, for the problem, you got the right answer. Good job!

If sin x = 4/5 , 90 <= x <= 180 then cos x =

Draw a right triangle in which the sine of x (opposite over adjacent) is 4/5. Since you need to find the adjacent side (other leg of the right triangle), use the Pythagorean theorem: b^2 + 4^2 = 5^2 b

HELP, getting frustrated! Statistics Normal Distribution Problem, what's the proportion

Birth weighs at a local hospital have a normal distribution with a mean of 110 ounces & a standard deviation of 15 ounces. a. What’s the proportion of infants with births weighs above 125 ounces? b. W

PLEASE HELP WITH MATH-FACTORING TRINOMIALS!!!! I DONT FREAKING GET IT!

2h²-3h-18 x²-9x-36 64p²-63p+16 15a²b+5a²-10a a²-11ab+18b² 18-9r+r²-2h²-3h-18 doesnt factor in rational numbers. x²-9x-36 = (x - 12) (x + 3) 64p²-63p+16 doesnt factor in real or rational numbers

( tan 70 + tan 65 ) / ( 1 - tan 70 tan 65 ) =

This is a tan (u+v) example: tan (u+v) = (tan u + tan v) / (1 - tanu * tan v) Substituting u = 70 and v = 65: ( tan 70 + tan 65 ) / ( 1 - tan 70 tan 65 ) = tan (70 + 65) This equals tan (135) = ta

I am breaking my head over this probem for half an hour! Geometry probem - chord properties

http://www.flickr.com/photos/53156739@N06/5723905376/in/photostream (The graph - I couldnt describe it in words.) Thank you!-Draw AF and AD In triangle AFE, FE² = 10² - 8² Hence, find FE Triangl

Give the Domain and Range of the relation

1. { (2,1), (3, 2), (4, 3), (5, 4) } 2. Find f(-1) for the function f(x) = 4x + 5-The domain is the set of first entries={2,3,4,5}. The range is the set of second entries=(1,2,3,4), where {} denotes

Solve for t. Give exact answer. 5(2^t) = 35

5(2^t) = 35 2^t = 7 --> t = ln(7)/ln(2) = 2.81-http://www.regentsprep.org/Regents/math/algtrig/ATE8/exponentialEquations.htm Refer to #1 on the middle of that page 2ˆt = 7 log2ˆt = log7 tlog2=log7 t

(Easy 10 points!) Using DeMoivre's Theorem

Using DeMoivres Theorem to evaluate the following. Express your answer in rectangular form. a. (2-2isqr3)^6 b. The 4 fourth roots of -81. Please show work! 10 points to best answer. Thanks!-a) The

Triangle help???plszzzZZZZZZZZ

http://www.act.org/compass/sample/geometry.html # 2-Its C.

Im 16 hes 36 ..helppp!! yikess

im 16 i met this man and hes 36 i no this is weird and gross but im in love with him but he thinks im 20 i havent told him and i dont think i will im way to deep in but we r in love and we wanto live

Give the coordinates of the vertex for the graph of each equation

1. y = x² + 6x + 9 2. y = -x² + 9-x coord of vertex is always -b/2a 1. (-3,0) 2.(0,9)-We find the vertex by completing the square: 1. y = x² + 6x + 9 This is a perfect square: we can simplify it as