## Mathematics Resources Dot product (vector math)

got stuck on a vector problem i encountered and would greatly appreciate some help; decide what t is so that the angle between u = (-1,t) and v = (1,1) becomes pi/3. I know that cos(pi/3) = 1/2... Question in description, Imagine they are in a 3 x 3 box

2 , ... , 8  ... , 16 , 32 14, 28 , ...   How do I figure out the blank spots?   Kind regards mathematics question

sui mother buys some share of A on day 0 On day 7 share price of A is \$44.6. If she sells all shares of A and buy 2000 share of B on day 7 should recieved \$7400. On day 12 share price of A is \$4.8... Is there a shortcut formula to use whenever one of the values inside a formula changes?

I have this formula. true=base×(1+A)×(1+B−C)×(1−D)×(1+E−F)×(1−G) If the E increases its value, is there a way to know the adjusted true without having to calculate the... There are 5 mathematics,4physics and 5 chemistry books. In how many ways can you arrange 4 mathematics, 3 physics and 4 chemistry books: {i}: If the books on the same subjects are arranged together,... A group of young men decided to raisebsh480,000 to a business to a start a businezs.Before the actual payment was made  four of the members pulled out and eacg of those remaining had to pay an... Expand each of the following binomials

(with working properly shown)  1. (1+x)7  Using pascal's triangle   2. (3-2x)4 using combinationcoefficients. Find the maximum point and the minimum poin in the following expression:

(with all working shown please) 1) 3x3 - 96x + 4 2) x3 - 3x + 4 give solution

Two brothers left home for a gym .one brother rode a bicycle at 25.2 km/h to reach the gym 5 min 50 sec later the other brother who took a taxi that drove at 37.8 km/hr .How far was the gym from their... I have 4 possibly answers 1-0.5 2-2.0 3-2.5 4-3.0

A ball was kicked into the air,and the balls height above the ground, in feet, T seconds after the balls was kicked was h(T)= -16T(2)+32T. How many seconds after it was kicked did the ball hit... give solution plz

A can do a job in 15 minutes,B takes 20 minutes while C takes 30 minutes to do the same job. All three begin working together.A leaves after 2 minutes, leaving B and C to continue working together...