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thx

whats the 18th term of a1 = -2; d = -3???

a_n = a₁  + d(n -1)      where n is the nth term and d is the common difference between terms...so we have....

a₁₈  =  -2 +  -3(18 - 1)  =  - 2 - 3(17)   =   -2 - 51  =   -53

2/5 * 7/12  =  

14/60  =

7/30

5*5=25

he might be another ronald regan

NO don't do it he is our president and do you want Hillary as president the woman that has been involved in scandals and told her plan to take down ISIS to whoever looked at her campaing site

goodbye amarica

DO IT DO IT

Woah! That's a bit far.

Do you have any less extreme opitions than k*****g him I mean he's bad but he isnt THAT bad

omg thankyou XD So stuck with my maths homework 

k**l him

lol that has nothing to do with anything lolll 

wha that has nothing to do with the topic presented at the beggining

a²+b²=c²

RIGGED

I just read about this...and it's kind of interesting....here's the method

Take 4 of of the sacks and empty approximately 1/2 of each sack into each coop....then....each coop holds 1/2 of a sack

Now...there is one sack remaining....split this in half so each part is 1/2 of a sack...now....split each of these parts in half...so each part is now 1/4 of a sack.....finally....split each of the 4 parts in half so that each part is 1/8 of a sack (approximately)

So......add each 1/8 sack to each of the 8 coops.....and each coop now holds (approximately)  1/2 + 1/8  = 4/8 + 1/8 =  5/8 of a sack.....

whats 2+2? 

You find the price per unit in each case and compare:

A - $3.60 / 24 =$0.15 cents per ounce fro brand A. Do exactly the same thing for the other brands and then compare to see the best deal, or the cheapest price.

-2a + 3b =4 

  a - 4b = -7

Take the determinant of the coefficient matrix  [we'll call this "A" ]

[ -2   3          =         (-2)(-4) - (3)(1)   =  8 - 3  = 5

 1   -4 ]  

Substitute the answer column into the first column of the previous matrix and take the determinant.....call this A_x 

[ 4   3       =   4(-4) - (-7)(3)   =  -16+ 21  =  5

 -7   -4]

Now......substitute the answer column into the second column of the first matrix and take the determinant .....call this A_y

[-2  4     =     (-2)(-7) - (4)(1)  =  14 - 4  = 10

 1  -7 ]

And x is given by  A_x / A   = 5/5  = 1

And y is given by A_y / A = 10/5  = 2

666 

Solve the following system: USE CRAMER'S RULE
{3 b-2 a = 4
a-4 b = -7
Express the system in matrix form:
(-2 | 3
1 | -4)(a
b) = (4
-7)
Solve the system with Cramer's rule:
a = 4 | 3
-7 | -4/-2 | 3
1 | -4 and b = -2 | 4
1 | -7/-2 | 3
1 | -4
-2 | 3
1 | -4 = -2 (-4)-3×1 = 5:
a = 4 | 3
-7 | -4/5 and b = -2 | 4
1 | -7/5
4 | 3
-7 | -4 = -(3 (-7))+4 (-4) = 5:
a = 5/5 and b = -2 | 4
1 | -7/5
Cancel terms: 5/5 = 1:
a = 1 and b = -2 | 4
1 | -7/5
-2 | 4
1 | -7 = -2 (-7)-4×1 = 10:
a = 1 and b = 10/5
Divide 10 by 5: 10/5 = (2×5)/(1×5) = 2:
Answer: |a = 1        and           b = 2

An archer shoots an arrow at 63.2 m/s at a 42.0 degree angle. If the ground is flat, how far away does it land?

The horizontal displacement is given by     v₀^2 * sin (2* θ) / g      where v₀ = 63.2 m/s , θ  = 42° and g = 9.8 m/s

So we have

[63.2]^2 * sin (2 * 42°) / 9.8  =

405.3 m

You know, OF, anything that you don't understand ALWAYS seems hard....but....like I always say......Math is one of those things that when you don't see it, you don't see it......and when you DO finally see it, you wonder why you didn't see it in the first place......so....hang in there.......

ur level of retardedness is off the charts