n>(2.33^2 *.5^2/.05^2 n=664

n>(2.33^2 *.5^2/.05^2 n=664

3n+2p=330 2n+3p=240 double the first equation and triple the second equation. 6n+4p=660 6n+9p=720 Subtact the second one from the first: -5p=-60 p=12 easy to solve n now, right? You need to practice substitution and elimination methods.

Find the zeros (roots) of the following equations. f(x) = 2x5 - 9x4 + 12x3 - 12x2 + 10x - 3 = 0 (answer)

Use synthetic division and check zero for x = +/- 3, +/ -1, +/- (3/2)

the distance d that a car will travel at a rate, or speed, r in time t is given by the formula d=rt (answer)

61*4.5 = 274.5

A cab driver drives from the airport (answer)

Distance is x a= time to go b=time back. speed* time=distance 60*a=x 45*b=x a= x/60 b=x/45 total time = a+b= x/60+x/45= 7x/180 = 2.1 So, x = 2.1*180/7 = 54 total distance = x+x= 108 average speed = total dist/total time = 108/2.1...

left edge 34 left edge of box = 37 middle of box = 42 right edge of box 52 right edge 60

40 mins = 2/3 hour Walk speed * time = distance a*2/3=3.8 speed = 3.8*3/2=5.7 km/hr Jogging rate is double that or 11.4.

40 mins = 2/3 hour Walk speed * time = distance a*2/3=3.8 speed = 3.8*3/2=5.7 km/hr Jogging rate is double that or 11.4.

You must flip the sign. For example -10<-5 but 10>5

order is important permutation (4,4) 4*3*2*1 = 24

Prove this identity: (answer)

=2sin^2Ix)/(2 sinx cosx) = sinx/cosx = sinx Sec x = sec x/csc x

probability (answer)

1. P(htt)+ p(tht) + p(tth) = 1/8 + 1/8+1/8 = 3/8. 2. p(f)* P(die<5) = 1/12 * 4/6 = 1/18.

help to solve this question (answer)

length = 2x width = x Perimeter = 6x = 240. x=40 2x=80

Pythagorean: 36^2+25^2 = c^2 c= 43.83

125+25=150

need help asap (answer)

2x*.05+x*.10=9960 .2x=9960 find x then find 3x which is the total.

cos^2∅tan∅sec∅=sin∅ (answer)

cos^2 * Sin/cos *1/cos=sin

2400=2x.3y.5z find x,y,z (answer)

2400 =2^5 * 3^1 *5^2 x=5 y=1 z=2

15000+125(number of shirts-100)

arithmetic is linear. geometric is exponential.