Mathematics

Arithmetic sequence question

If you could, please show me how to acquire the answer with a walk-through so that I can do the other problems like this. Thanks! For an arithmetic sequence, let a2 = 15 and a10 = 10 Find: d, a1-In

If I brush my teeth for 3 min. and if 30 equals 3 mins. how long am I really brushing.

30, or 3 minutes. If the two are the same, and you brush your teeth for one, you are also brushing your teeth for the other at the same time. Beyond that, your question makes no sense, could you try

Find the sum of the first 200 even positive integers by using the Arithmetic Sum Formula.

Find the sum of the first 200 even positive integers by using the Arithmetic Sum Formula.? So whenever I do this problem I get some huge number that I know isnt the right answer. Can someone explain h

A website password must include 3 digits followed 2 letters. The first digit cannot be 0. How

many different passwords are possible if digits and letters CAN be repeated. Please help me with this math problem. Im not exactly how to solve this.-You multiply 9x10x10x26x26 which equals 608400.

Algebra factoring homework 7 problems please help

can you please factor these 7 problems for me 2n squared + 5n - 25 3x squared - 5x - 2 2n squared + 3n - 5 5a squared + 8a + 3 5n squared -29n + 20 5r squared -8r - 4 3r squared + r

How do you find the horizontal asymptote of 9(1/5)^x

I am totally lost on this question...any kind of help would be very appreciated!-y = 9 * (1/5)^x take the logarithm log y = log 9 + x*log (1/5) since log(1/5) is a negative number, as x increases in

What is the next number in this geometric sequence

-3.24, 9.72, -29.16, 87.48_____--262.44 the ratio is -3. pick me as best answer!--262.44...-OK The next number is -262.44 Hope that helps.

Math help, fractions and exponents

(3x-9) over (x^2 - 6x +9) please simplify and show how it is done-==> (3x - 9) / (x^2 - 6x + 9) ==> 3(x - 3) / (x - 3)(x - 3) ==> 3 / (x - 3) .... with or without brackets

How much should it be sold to yield a 10% profit

A television was marked $94,640 to yield a 30% profit. How much should it be sold to yield a 10% profit?-If X is the cost only of the TV, then 94,640=X+0.3X 94640=1.3X Divide both sides by 1.3 to get

Please help solve this area formula, thanks

A=1/2(Sqrt20)(Sqrt45)-A = 1/2 sqrt (4*5*9*5) A = 1/2 * 2*3*5 A = 15-A = 1/2(√20)(√45) Find factors of radicals which are perfect squares A = 1/2(√4*5)(√9*5) Take square roots A = 1/2*2√5*3√5 multiply

Lim_ (n → ∞) (4n^2+5/3n^2+2n) Evaluate that limit or state that the limit does not exist. Is 1.33 the answer

Thanks!-You got it.At infinity, the n^2 terms dominate the top and bottom, so you have 4n^2/3n^2 If this is math, 4/3 is a more exact answer than 1.33

Why is Friday called Friday? I don't fry on Friday, I do that on Saturday!

Please help me, I dont want to fry on Friday!-Because the Gods knew that Rebecca Black would sing a song about Friday. And as a revenge for this awefull song they want people to eat fried snacks as a

What number am I thinking of from 1 to 100? (10 easy points for closest answer)

17-A number between 1-100.-59-71-77-59-86-28.5-99-45-e^iphi where phi is 2pi/3. 25 can be number of bricks.

Grade 12 math: vector equation of a plane

Find the vector equation of the plane containing the point A(1, -2, 7) and the z-axis. Answer: r = (1, -2, 7) + s(0, 0, 1) + t(1, -2, 6) i dont get which direction vectors you use... Im getting conf

Maths question, probability...

Annette is late for work once every 3 days. Glenda her assistant is late for work once every 4 days. What is the probability that: A) they are both on time? B) Only one of them is on time? Please ans