# B8

Popular questions and responses by B8
1. ## math

In Lewis Carroll's Through The looking Glass, Tweedledum says, "the sum of your weight and twice mine is 361 pounds". Tweedledee replies, "The sum of your weight and twice mine is 362 pounds". Find both weights. ONLY AN ALGEBRAIC SOLUTION WILL BE ACCEPTED

2. ## math

The question is there are 18 students in a class. Each day the teacher randomly selects three students to assist in a game: a leader, a recorder, and a timekeeper. In how many possible ways can the jobs be assigned? so first is 1 out of 18 then since one

3. ## math

the triangle CDE, m

4. ## math

What is the solution to x+5+x+1+x=3(x+2)+1 1)x=0 2)x=3 3)no solution 4) infinite I got #3 no solution x+5+x+1+x=3(x+2)+1 x+5+x+1+x=3x+6+1 3x+6=3x+7 -3x -3x 6=7 so no solution Is this correct? Thanks for checking over my work.

5. ## Math

which ordered pair is the solution of the following system of equations? y=2x-3 x+y=3 1) (1,2) 2)(2,1) 3)(3,0) 4)(3,3) MY work: y=2x-3 x+(2x-3)=3 3x-3=3 +3 +3 3x/3=6/3 x=2 x+y=3 2+y=3 -2 -2 y=1 so I got (2,1) which would be answer 2 Is this correct? Thanks

6. ## math

what is the slope of the line represented by the equation 4x+3y=12 1) 4/3 2) 3/4 3) -3/4 4)-4/3 I did 4x+3y=12 -4x -4x 3y=-4x+12 /3 /3 divide each side by3 y=-4/3x+4 so I got answer 4 because the -4/3 is the slope Is this correct? Thanks for checking my

7. ## math

Greg teaches martial arts. He charges a one time processing fee of \$5.00 and the cost of classes are shown below. let x represent the number of classes and y represent the cost of the classes. Based on the information, what will it cost to take 10 classes?

8. ## math

Jesse rents 2 movies and 4 video games for a total of \$18.70. At the same time, Dan rents 3 movies and 2 video games for a total of \$15.25. How much does their friend Sabrina need to rent a combination of one game and one movie from the same video rental

9. ## math

Mrs P made punch and wanted to serve it in cone shaped cups. When she poured the drink into the cup she poured it to the top and still had some remaining in the bowl. Mrs P knew that she made 355ml of punch. The height of the cone shaped cup was 12cm and

10. ## math

a man standing on ground level is 1000 feet away from the base of a 350 feet tall building. Find,to the nearest degree,the measure of the angle of elevation to the top of the building from the point on the ground where the man is standing? How do you solve

11. ## math

Given: R=(1,2,3,4,) A=(0,2,4,6) P=(1,3,5,7) What is R U P U= the symbol actually is an upside down U. We didn't learn this symbol so I do not know what to do. Can you help? answer choices are: 1) (0,1,2,3,4,5,6,7) 2) (1,2,3,4,5,7) 3) (1,3) 4) (2,4) Thank

12. ## math

the question is what is the solution of the equation x+2/2=4/x? 1) 1 and-8 2)2 and-4 3) -1 and9 4) -2 and4 I did x^2+2x+8 (x+4)(x+2) -4 -2 This is not one of the choices can you help me figure out where I went wrong. Thanks for your help

13. ## math

which statement about linear functions are true A)linear functions grow by equal factors over equal intervals B)linear functions grow by equal differences over equal intervals C)linear functions grow by equal differences over unequal intervals D)linear

14. ## math

The center pole of a tent is 8 feet long. the side of the tent is 12 feet long. If a right angle is formed where the center pole meets the ground, what is the measure of angle a.(there is a pic, the 8ft line is the center pole going down, this forms the

15. ## math

the right triangle ABC,

16. ## math

A construction worker on the roof of a 17 meter building in NYC is speaking to his boss on the ground. If the boss is standing 9 meters from the building, from the angle of depression from the construction worker to his boss. I used the formula Tan=o/a tan

17. ## math

A tree, in danger of falling , stands 65 feet from the house. The angle of elevation from the bottom of the house to the top of the tree is 50 degrees. If the tree should fall directly towards the house, will it the house? show all work and explain your

18. ## math

Determine the number of solutions for the following system of equations 2x+5y=7 10y=-4x+14 1)Exactly one solution 2)No solutions 3)infinite solutions 4)Exactly 2 solutions I solved the equations and got y=7-2X/5 y=-4X+14/10 and I said infinite solutions.

this is a two part question. Dylan owns a bakery where she sells cakes for \$20 each, pies for \$15each,and doughnuts for \$2 each. Her total income,t, can be computed using the equation t=15p+2d+20c 1) solve this equation for d t=15p+2d+20c -15p -15p t

20. ## math

from the expression below, which one is not factorable? 1)x^2+4x+6 2) 3ab^2-16a 3)x^2-441 4)4x^2+19x-5 I thought the answer was 2) b is not in the second part of the equation(the 16a) Is this correct? Thanks for checking my work

21. ## math

rewritten as a power of 2 with a rational exponent, the expression 4*squared root of 2 would equal which of the following. 1) 2 so 2 is just 2 2)2^2 which would =4 3) 2^5/2 this =5.65 4)2^5 this=32 4*square root of two=5.65 so I believe the answer is 3. Is

22. ## math

Gina is adding a lace border to a circular pillow. The radius of the pillow is 8 inches, and she needs to decide how much lace to buy. Which length represents the least amount she can buy? 1) 26 inches 2) 51 inches 3) 101 inches 4) 202 inches p=2pir p=2pi8

23. ## math

Factor completely, the expression 2x^2+6x-20 I did 2(x^2+3x-10) then it can go down to 2(x+5)(x-2) Is this correct? Thanks for checking my work

24. ## math

The product of 3^4*3^-2 is so I multiplied the exponents and got 4*-2 =-8 so my answer is 3^-8 Is this correct? Thanks for checking my work

25. ## math

Andrew has \$2.75 in nickels and quarters in his coat pocket. If he has a total of 15 coins, which system of equations could you use to find the number of quarters in Andrews coat pocket? 1)x+y=15 0.5x+0.25y=2.75 2)x+y=2.75 x+y=15 3)x+y=15 0.05x+ 0.25y=2.75

26. ## math

solve algebraically and check y=8x+3 y=-4x-21 8x+3=-4x-21 +4x +4x 12x+3=-21 -3 -3 12x=-24 x=-2 y=8x+3 y=8(-2)+3 y=-16+3 y=-13 (-2,-13) check y=8x+3 -13=8(-2)+3 -13=-16+3 -13=-13 y=-4x-21 -13=-4(-2)-21 -13=8-21 so -13=-13 these check, so did I do this

27. ## math

the perimeter p of a rectangle can be found using the formula p=2(l+w) where l represents the length and w represents the width. which equation represents the width in the terms of p and l. a) w=2(p-l) b)w=p-l/2 c) w=2p-1 d) w=p/2-1 p=2l+2w p-2l/2=w

28. ## math- can you please check my work

Can you please check my work. I asked this question yesterday but no one helped me. Thank you , I really appreciate it A hot air balloon was at a height of 60 feet above the ground when it began to ascend. The balloon climbed at a rate of 15 feet per

29. ## math

A hot air balloon was at a height of 60 feet above the ground when it began to ascend. The balloon climbed at a rate of 15 feet per minute. a) make a table that shows the height of the air balloon after climbing for 1,2,3,&4 minutes. minutes:1 2 3 4

30. ## math

what is the range of the relation below? ((1,2)(3,4)(5,6)(7,8)) a)all real numbers b) all even numbers c)(2,4,6,8) d)(1,3,5,7) I am confused because I thought the range was the highest - the lowest number. so if it was the highest 8-1, the lowest, the

31. ## math

The formula D = t + tsp is used to determine how much turkey, stuffing, and potatoes a family will consume. What is the formula solved for t? I have no idea how to complete this problem

32. ## math

Over the river and through the woods to grandpa's house the smith grandchildren go. They drive 120miles to reach grandpa's house and the same distance back home. 1) It took 1.2hours to get halfway there. What is their average speed, in miles per hour, for

33. ## math

the dimensions of Gina's dining room table are represented by (3x-7) and (30-x). Find the perimeter 0f the table in terms of x. I did (3x-7)(-x+30) -3x^2+90x+7x-210 -3x^2+97x-210 Is this correct? Thanks for checking my work, I appreciate it

34. ## math

Aaron has a turkey farm. for every three male turkeys, he has 17 female turkeys. If he has 272 female turkeys, how many male turkeys does Aaron have? I did 3/17=x/272 17x/17=816/17 so x=48 Is this correct? Thanks for checking over my work

What is the best sequence of names to identify this set of numbers? (1 3/5,-10, 0.51(the one is repeating), TT,17) 1.(rational,integer,irrational,irrational,natural) 2. (rational,irrational,rational, irrational, whole) 3.rational,real,rational,real,

36. ## math

What is the best sequence of names to identify this set of numbers? (1 3/5,-10, 0.51(the one is repeating), TT,17) 1.(rational,integer,irrational,irrational,natural) 2. (rational,irrational,rational, irrational, whole) 3.rational,real,rational,real,

37. ## math

Which is the solution to the inequality 9-4

38. ## math

using the laws of exponents simplify (25)^3 so (5x5)^3 (5^2)^3 so I got 5^6 Is this correct?

39. ## math

Which of the following houses would you have the greatest probability of getting a crunch bar while trick or treating if the owner is randomly handing out one item to each child? 1) house 1 has 30 crunch bars,20 sour patch kids, 30 Swedish fish 2) house 2

40. ## math

find the difference when (-2x^2+7x-5) is subtracted from (3x^2-4x+2). -2x^2+7x-5 - (3x^2-4x+2) so I changed it to + (-3x^2+4x-2) I got -5x^2+11x-7 Is this correct?

41. ## math

the question is Alyssa ate 3 more than 1/2 as many candy corns as Hayley. If Alyssa ate 17 candy corn, find the number of candy corn Hayley ate? First I thought to do 17-3=14 14x2=28 This was my first thought but then I wondered if you multiplied first

42. ## math

7/x+5/3x=2/x-5 so lcm=3x(x-5) 21(x-5)+5(x-5)=5x 21x-105+5x-25=5x 26x-130=5x -26x to both sides -130=-21x divide each side by -21 -130/-21 x=6.19 is this correct thanks for checking my work.

43. ## math

I am alittle confused but I did attempt the question. How did I do? Solve 1/3y+5/12=2/y first I brought the y over to the other side.Mult both sides by 3/1 getting 5/12=6y/y 5/12=5y now divide each side by 1/5 1/12=y I this correct? If not can you lead me

44. ## math

What is the value of x in the equation x/2+x/6=2 I found a common denominater of 6 3x/6+x/6=2 4x/6=2 mult. both sides by 6/1 and you get 4x=12 so x=12/4 or x=3 Is this correct/ Thanks for checking my work

45. ## Math

what is the value of 3^0+3^-2? so I did 3^0=1 and 3^-2 =1/9 so 3^0+3^-2= 1 1/9 Is this correct? Thank you again for checking my work.

46. ## Math

Solve the equation for d 0.2(d-6)=0.3d+5-3+0.1d I had d=-16 Work: 1. distribute 2. 0.2d-1.2=0.3d+5-3+0.1d 3. 0.2d=0.4d+3.2 4. -0.2d=3.2 5. divide 6. d= -16 I even did a check 0.2(d-6)=0.3d+5-3+0.1d 0.2(-16-6)=0.3(-16)+5-3+0.1(-16)

47. ## math

prove, using the law of exponents, that the following is true (2^4)^3=(64)^2 (use the same bases to rewrite the expression) the second half of =(8)^2 (8)^2 =(4)^2 (2)^2 (4)^2 (2)^2 =(2)^2(2^2)(2^2)(2^2)(2^2)(2^2) now the first part (2^4)^3 2x2x2x2 2x2x2x2

48. ## math

express in simplest form (2x+1)^2-2(2x^2-1) (2x+1)(2x+1)-2(2x^2-1) 4x^2+4x+1-4x^2+2 4x+3 is my answer Did I do this correctly? Thank you

50. ## math

what is the expression for factorization of 6x^2+24? I got 6(x+2)(x-2) Hopefully I got this correct. Thanks for checking for me, I appreciate it.

51. ## math

what is the expression for the factored form of 1/4y^2-36? I got (1/4y-6)(1/4y+6) Is this correct? Thanks for checking my work

52. ## math

factor completely n^4-y^4 (n^2+Y^2)(n^2-y^2) (n^2+y^2)(n+y)(n-y) Did I do this correctly? Thank you

53. ## math

can you tell me if I factored this correctly and completely? 2x^3+6x^2+3x+9 (2x^3+6x^2)+(3x+9) 2x^2(x+3)+3(x+3) (x+3)(2x^2+3) Thank you for your help

54. ## math

The area of a parallelogram is represented by x^2-7x-8 and its height is represented by x+1, what would the base of the parallelogram be? I am not sure how to do this. Would you divide the area by the height? would it be x-8 Thank you for your help

55. ## math

The question is (2x+1)^2-2(2x^2-1) in simplest form Is this correct? [(2x+1)(2x+1)](-4x^2+2) 4x^2+2x+2x+1(-4x^2+2) 4x^2+4x+1(-4x^2+2) -16x^4-16x^3-4x^2 + 8x^2+8x+2 _________________________ -16^4-16x^3+4x^2+8x +2 Did I do this correctly? Thank you for your

1. ## math

3 is also in R and P so the answer would be choice number 3 Thanks for explaining this, it really helped.

posted on May 26, 2014
2. ## math

posted on May 26, 2014
3. ## math

yes I got 62 also, sorry slip on my typing. Thanks for checking my work

posted on March 3, 2014
4. ## math

Thank you for your help, That is interesting to see it like that, but if we don't show all the work we don't get credit for the question

posted on March 3, 2014
5. ## math

so what I had is correct. Thank you for checking and explaining the work!!

posted on March 2, 2014
6. ## math

ok, Thank you

posted on March 1, 2014
7. ## math

It isn't \$12 a class but from the numbers they give, for example one class =\$15, two classes =\$27, three classes=\$39, and four classes=\$51 so the difference between each class is \$12; not each class costs \$12. so to figure out 5 classes I added \$12 to \$51

posted on March 1, 2014

Reiny and ms sue are also very good.

posted on February 12, 2014

Thank you for explaining it. When I see Steve as the person answering my question I know I will get an explanation and I will understand everything better afterwards. Thank you so much

posted on February 12, 2014
10. ## math

It is not 4 squared times 2 the equation It is 4 times the square root of two. so my second step was to first get the square root of 2, which=1.4142 the multiplied it by 4 s0 4 x 1.412=5.65 Am I correct?

posted on February 10, 2014
11. ## math

Why is it not the same I 6x-8x=-2x so that is how I got (x-3)(x-1)=-2x-3 but both ways are no solution. Thanks for checking my work

posted on January 28, 2014
12. ## math

Thank you at first I stopped at the 2(x^2+3x-10) but I thought about it and realized it could be factored further.

posted on January 27, 2014
13. ## math

thank you I see my mistake. I multiplied the exponents instead of adding them. Thanks for correcting it for me.

posted on January 26, 2014
14. ## math

Thank you

posted on January 12, 2014
15. ## math

OK. Thanks for the added information explaining how the answer could have been different. Thank you for your help!

posted on January 11, 2014
16. ## math

thank you!:)

posted on January 11, 2014
17. ## math

thank you

posted on January 11, 2014
18. ## math

thank you

posted on December 19, 2013
19. ## math

ok, so the first number is the x value and the second is the y value? Thank you for explaining that.

posted on December 15, 2013
20. ## math

thank you for explaining this to me.

posted on December 2, 2013
21. ## math

thank you, I see where I went wrong

posted on December 1, 2013
22. ## math

thank you

posted on November 27, 2013
23. ## math

the reason why I think 3 is correct because question doesn't ask x being equal to 2 like you stated but it says the x is larger than 2, from the answer I got.

posted on November 17, 2013
24. ## math

Of the multiple choice answers above, I believe 3 is the only answer that fits.

posted on November 17, 2013
25. ## math

thank you for your help. I guess I put the wrong one on top when I subtracted. I seem to get mixed up which goes first when they ask the wording of the difference. Thanks for showing me what I did wrong.

posted on October 27, 2013
26. ## math

I didn't think the second way was right. Thanks for clarifying it for me.

posted on October 26, 2013
27. ## math

both of you have the work the same way but one has lcm as 3x(x+5) and the other has it as 3x(x-5). I thought it was the 3x(x-5)myself . Which is correct?

posted on October 19, 2013
28. ## math

thank you for your help. I see my mistake now

posted on October 19, 2013
29. ## math

How did you get the 12y or where did the 12y come from? thanks for helping me

posted on October 19, 2013
30. ## math

thank you for showing me another way to do it.

posted on October 18, 2013
31. ## math

so you are saying 4^-4 is the same as 1/4^4. Thank you for trying to explain this but I am still alittle confused.

posted on October 14, 2013
32. ## Math

Thank you.

posted on October 13, 2013
33. ## Math

Thanks because I thought I was correct but my friend got 5 1/3 for the same work doing0.2d-1.20=.40d+2 +1.2 to each side then taking 0.40d to each side getting0.6=3.20 divide each side by0.6 giving her 5 1/3 so where did se go wrong, so I can help her out

posted on October 13, 2013
34. ## math

I thought having the same base meant having the same number if it can be in simplier form. that is why I made them all multiples of 2. Thank you for your help

posted on October 3, 2013
35. ## math

but the question said it the expression should have the same base, so wouldn't you have to go further?

posted on October 3, 2013
36. ## math

I realized a mistake I made The answer I got when I corrected my work is 6(x^2+4) Is this now correct? Thank you

posted on September 29, 2013
37. ## math

thanks for the help

posted on September 29, 2013
38. ## math

Ok, I see my mistake. Thanks for explaining what I did incorrectly.

posted on September 28, 2013