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2c + 4p = 76 legs

c+p = 26 heads         p = 26-c

2c + 4 (26-c) = 76    solve for   c, chickens...then p = 26-c

h(t) = 6

6 = -4.9t^2 + 14t-.4

0 = -4.9t^2 + 14t- 6.4       use quadratic formula to find t = 4/7    to   16/7  sec         time between it is higher than 6

Sorry, but that is incorrect... PLS HELP!!! anybody else??

32*33=1056

3. 4t^2 - 9t + 2 = 0 ==> t = 1/4, 2.   Answer is (-inf,1/4] U [2,inf).

4. (3- z)/(z+1) >= 1 ==> 3 - z >= z + 1 ==> z <= 1.  Answer is (-inf,1].

Sorry, but 1/4 is incorrect.

(x - 1)(x + 9) = x^2 + 8x - 9

(x + 1)(x - 9) = x^2 - 8x + 9

Answer = (8)(-8) = -64

Can you please explain this? I'm not sure I understand.

The "successful" region has half the size of the whole triangle, so by similar triangles, the probability that the area of triangle XYD is at most 12 is 1/4.

6/16*10/15=1/4

The area of the wall is 600 m^2.  To convert to ft^2, we divide by 0.3048, so 1968.5 ft^2.  Divide by 200 ft^2: 9.84 gallons.  So you need 10 gallons of paint.

You have to add 9 to both sides to make two perfect square binomials, then put it into the correct format of the circle equation

(x^2-24x+144)+(y^2+10y+25)=9

(x-12)^2+(y+5)^2=9

(x-12)^2+(y+5)^2=3^2

Thus, the center of the circle is (12,-5)

Using the pythagorean theorem, you get 12^2+5^2=169

The square root of 169 is 13, thus your answer is 13

        2log(a - 2b)  =  log(a) + log(b)

        log(a - 2b)²  =  log(ab)

             (a - 2b)²  =  ab

    a² - 4ab + 4b²  =  ab

     a² - 5ab + 4b²  =  0

      (a - 4b)(a - b)  =  0

 Either  a = 4b   or   a = b                                  (It is impossible for a to equal b)

--->   a/b  =  1/4  

So is the answer -x2 + 19x + 29?

You are welcome !  

rate  *  time = distance

distance is same  so equate:

40 m/hr  *  x    =    30 m/hr (x+1/3)     solve for x =   1 hour      (be careful....you need to change 20 min into 1/3 hour becuase the other parameters are in miles/hr)                          

    40 m/hr x 1 hr = 40 miles

i got it! thanks electricpavlov! :D

https://web2.0calc.com/questions/pls-help_99

Similarly

- All of the members of our spray-painting team paint at the same speed. If 20 team members can paint a 6000 square foot wall in 24 minutes, then how many minutes would it take the 20 members to paint an 8000 square foot wall?

6000 ft^2 / 20 m 24 min = 12.5  ft^2 / m-min

12.5  ft^2 / m-min    *  20 m  / 8000 ft^2 =    .03125 / min    = 32 min

or another way

24 min / ( 6000 ft^2 - 20 m  )     *    20 m * 8000 ft^2  =  32 min

You try the last one....just remember you have to get the units to cancel out and leave what you are looking for...this will dtermine whenther to divide or multiply by the parameters.....

w

l = 3w-3      l  x w  = 18

w ( 3w-3) = 18

3 w^2 - 3w - 18 = 0      quadratic formula shows w = 3    then l = 6 

ahh thanks !! could you also help me on these two?

- All of the members of our spray-painting team paint at the same speed. If 20 team members can paint a 6000 square foot wall in 24 minutes, then how many minutes would it take the 20 members to paint an 8000 square foot wall?

-  All of the members of our spray-painting team paint at the same speed. If 20 team members can paint a 4800 square foot wall in 36 minutes, then how many minutes would it take for 9 team members to paint a 3600 square foot wall?

1 wall / 8 m 36 min =    1   w/  288 m- min

1 w  /  288 m - min    x  12 m =   1 w /24 min          24 minutes

I made this diagram for you to see. The base is 6 and the height is 5/3, from here, we know that the answer is just 5.