Tuesday, 6 August 2013

Algebra Word Problems: Please Help!!!?

spongebob 7 mile on Black People
spongebob 7 mile image



Zrekcahs L


Solve completely:
1) Spongebob is 3 years older than his sister spongebabe. In 7 years, she will be six-sevenths his age. How old are they?

2) Gon and Killua enter the Hunter Exam. Gon run at 8 mi/hr and Killua at 6 mi/hr. If they start together, how long before Gon is 1/4 miles ahead of Killua?

3) A contractor mixed two batches of concrete that were 9.3% and 11.3% to obtain 4500 lbs of concrete that was 10.8% cement. How much of each type of concrete was used?

4) One pipe can fill a swimming pool in 6 hours and another in 8 hours. If the first pipe runs for 3 hours and then the second pipe is open, how long before the pool is full?

5) Dave, Joe and Sabrina were assigned the job of cataloging the musical instruments for their school's band. Dave could have done it in 2 hours alone, Sabrina in 3 hours and Joe in 4 hours. They started work together, but Sabrina left at the end of a half-hour and Joe left at the end of an hour. How long did Dave work alone to finish cataloging?

PLEASE answer the following with CLEAR and COMPLETE answers. NEED it ASAP.

Thanks for your time to HELP me out.

^_____^

Another is that: Find the value of "k" such that (2k+1)x^2 + (k-1)x + k = 0 has real and equal roots

THANK YOU VERY MUCH.

^^,



Answer
Spongbob's age todayâx:
6/7(x + 7) = x - 3 + 7
6x + 42 = 7x - 21 + 49
x = 14

Spongebabe's age today:
= 14 - 3
= 11

Answer 1: Spongebob is 14; Spongebabe is 11.
--------------
Hours to distance 1/4 mileâx:
x(8 - 6) = 1/4
4x(2) = 1
8x = 1
x = 1/8

Answer 2: 1/8 hour OR 7 minutes 30 seconds
--------------
Lbs of 9.3% mixâx:
0.093x + 0.113(4,500 - x) = 0.108(4,500)
93x + 113(4,500 - x) = 108(4,500)
93x + 508,500 - 113x = 486,000
20x = 22,500
x = 1,125

Lbs of 11.3% mix:
= 4,500 - 1,125
= 3,375

Answer 3: 9.3% mix, 1,125 lbs; 11.3% mix, 3,375 lbs
--------------
No. of hours 2nd pipe runs without the 1st pipeâx:
3(1/6) + 1/8(x + 3) = 1
1/2 + 1/8x + 3/8 = 1
4 + x + 3 = 8
x = 1

No. of hours pool will be full:
= 3 + 1
= 4

Answer 4: 4 hours
--------------
No. of hours Dave finishes the job aloneâx:
1/2(1/3) + 1/4 + 1/2(1 + x) = 1
2 + 3 + 6(1 + x) = 12
6 + 6x = 7
6x = 1
x = 1/6

Answer 5: 1/6 hour OR 10 minutes for Dave to finish the job alone

Creepy Little Kid Movie Quiz?




LilyRT


1. his favorite art activity is mirror writing with his crayon of choice--lipstick! that is, when he's not playing with his freaky twin girl friends in the north wing.

2. I really think this chick's whole mental attitude would improve enormously if she'd buy a scrunchie and get all that damn black hair out of her face. of course, avoiding her tendancy to crawl out of TV's would probably help, too.

3. speaking of TV's...this creepy little kid really needs to quit speaking to ghosts on the static channel. if you're that bored by spongebob, there's always yo gabba gabba!

4. oldie but a goodie. these delightful little boy twins just love playing with their favorite ring that they went through hell to get. of course, one of the twins enjoys it more than the other.

5. So...dwarfism and adoption turns people into homicidal maniacs. That's going the extra mile for encouraging adoption and tolerance.

6. Stuttering Stanley! Stuttering Stanley! Stuttering Stanley!

7. You can't really blame him for turning out so badly. If your parents were the devil and a jackal, you'd probably have a few psychological problems too. And that's before your adoptive mother puts that silly little beanie on your head.

8. on the upside, her new creepiness has really improved her flexibility...and expanded her vocabulary....and given her the ability to float.

9. one man's creepy is another man's utopia. all of these creepy kids might be a catholic nun's wet dream. they wear their uniforms without complaining, learn at a prodigious rate, never listen to rocknroll, and neatly cut and comb their white hair.

10. who says that bigotry is taught by adults. these creepy little kids kill all the adults and still develop religious intolerance. "Do not blaspheme Malachai!"
way to go Keith!

nobody has gotten 4, 6, or 9 yet. any ideas?
oops sorry! Celeste got The Sixth Sense!



Answer
1. The Shining
2. The Ring
3. Poltergeist
4. ?
5. Orphan
6. ?
7. The Omen
8. The Exorcist
9. ?
10. Children of the Corn




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