Mathematics

Splese help with this math?!

i heard that if there is no parenthesis(brackets) you dont need to use pedmas(bedmas) at all. is this true? because do you really need a complicated mathimatical thing to figure out things like 2+3x4?

If A is a 4x4 matrix...

and det(A) = -3, then: det(2A) = ? det(A^T) = ?-Since A is 4 x 4, det(2A) = 2^4 * |A| = 16 * -3 = -48. ----------------- Since transposition does not affect the determinant, det(A^T) = det(A) = -3.

What is the value of k

The matrix A=1 k -1 6 has two distinct real eigenvalues if and only if k can anyone show me how to do this?-A - LI = 0, I = unit matrix.. The poor mans lambda (L) is used here.. Find the determinate

Maths algebra??????????????????????????????

a = x a+a = a+x [add a to both sides] 2a = a+x [a+a = 2a] 2a-2x = a+x-2x [subtract 2x from both sides] 2(a-x) = a+x-2x [2a-2x = 2(a-x)] 2(a-x) = a-x [x-2x = -x] 2 = 1 [divide both sides by a-x] 2 = 1

Can somebody explain the prothegreom theorem too me in full detail thanks!

If someone could explain the math prothegreom theorem for me that would be great ! More detail the better understanding the better (:-(its Pythagorean by the way) so each triangle has 3 sides right? w

How do you find the eigenvalue of A when you have the trace and determinant

Suppose that the trace of a 2x2 matrix Ais tr(A)=7 , and the determinant is det(A)=6 . Find the eigenvalues of A. How do I start doing this? can someone help me?-Let x and y be the two eigenvalues f

Math help( quadratic function)

Name the vertex and y-intercept of each of the following: 1.y – 4 = 2(x – 5)²2. y=1/2(x+4)²+2-1.y – 4 = 2(x – 5)²vertex (5,4)y-intercept (0,54)2. y=(1/2)(x+4)²+2vertex (-4,-2)y-intercept (0,10)

Um please explain this limit problem to me

I am practicing online with calculus problems my teacher linked me to for my test tomorrow, and one of the limit questions comes out to 1/12, but Im getting 12 instead. As X -> 6 , find the limit of

Write an equation for this pattern!!!

I need ONE equation for the pattern: N=1 y=4 n=2 y=7 n=3 y=10 n=4 y=13-y = 3n + 1-n + 1 = y + 3

Mental Math help please

Could anyone explain mental math to me plz, im not lookin for answers but here is one of my problems Use mental math to simplify each expression 10 x 72 x 5 x 2-5X2 is 10, and to multiply by 10 means

Math help. simple 10 points!

what is the intergral of (0.5) / (x + 1) ?? i understand it would be .5 ln (x + 1). alternatively.... isnt (.5) / (x+ 1) the same as 1 / (2x + 2)???? correct me if i am wrong, but isnt the intergral

How to solve 7k(to the 4th power)/5k(to the 3rd power) - 2k(to the 2nd power)?!

Please add details and how you got it!!!! I honestly dont understand a thing.-7k^4/ 5k^3 -2k² (7/5)(k^4/k^3) -2k² (7/5)( k*k*k*k/ k*k*k ) -2k² (7/5)( k) - 2k² you can leave it like that or factor o

Help on Math urgent need help

Jason babysat for 60 hours during July. He charged $1.50 for each hour that he worked before midnight and 3 dollars an hour after midnight. If he earned $112.50 in all, how many hours he work after mi

I need help on how to do this problem please

the formula y= -0.7x + 37 models the percentage of me,y, smoking cigarettes x years after 1980 the percentage of men who smoked in 1994 is??? how do I do this problem??-You take the difference betwe

Math: finding a percent of a number

Ok, so the question is: what is 40% of 250? I did 40 over 250 and X over 100, i cross multiplied and my answer was: 16. The problem is, my choices are: a)50 b)100 c)150 d)200 what am i doing wrong?