algebra
just solve it like any quadratic. When it hits the ground, h=0, so 4 + 60t - 16t^2 = 0 t=3.8 sec this doesn't factor easily, so the quadratic formula is probably best. However, while you're doing that, the kicker has probably scored a goal!
physics
well, how long does it take to fall 4m? divide that into 6m to get the speed.
physics
It helps to know that Exit 16 is east of Exit 17. Since the two cars travel 7km in t seconds, 30t + 26t = 7000 t = 125 sec That would be 2'5"
Business Math
1/9 x = 600,000 so, x = ?
geometry
surely you know that the circle contains 360°. So, (8x-10) + (6x) + (10x+10) = 360 x = 15
Maths
since the product of the roots is c/7, c/7=1 c=7 doesn't matter what the roots are, reciprocals or not.
Halfway solved-calc
rotated around y = -1, not y=0. So the radius of each disc/shell is y+1, not just y.
Halfway solved-calc
discs and washers are the same. Washers are just discs with holes in them. Since x is difficult to express as a function of y, we want to integrate using dx. Since we're revolving around a horizontal line, using dx means working with discs, since the thickness of each disc...
algebra
g^-1(x) = (x-1)/3 solve for x and then swap names: g=3x+1 3x = g-1 x = (g-1)/3
math master help plzzzzzzzzzzzzzz
factoring out a 2, we have 3,6,10,16,26,44,78 Not an easy polynomial, so it must be defined recursively. 6 12 = 2(6-0) 20 = 2(12-2) 32 = 2(20-4) 52 = 2(32-6) 88 = 2(52-8) 156 = 2(88-10) So, it looks like T0 = 6 Tn+1 = 2(Tn-2n) So, the next term should be 2(156-12) = 288
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