188,810 results, page 20

1. ### 7th grade-Algebra Worth Problem

Please show equation and solve for the following 1. Lyn's age is 8 years less than 15 times the age of her niece Elizabeth. If the sum of their ages is 24, what is Elizabeth's age ( Let e= Elizabeth's age) 2. Bob is renting a canoe for \$20, plus \$9.75 per day. How mant days ...

can someone please help explain how to do this problem. i have a previous posting where i tried to work the problem out, and someone tried to explain where i was confused, but im still confused. 4(2n+1)=3(6n+3)+1

three different bags of pretzels are sold at the store which bag of pretzels is the best buy bag a 10 ounces for 1.10 bag b 12 ounces for 1.38 bag c 6 ounces 0.84 My Answer is b please check:-)
4. ### Chemistry

please help! Is RTP in chemistry (thermochemistry and electrochemistry) referring to room temperature of 25degreeC (or 298K) and 1atm, or 20degreeC (293K) and 1atm? In my lecture notes on gas law, they stated RTP refers to 25degreeC, but in my electrochem lecture notes they ...
5. ### Math

Can someone please show me step by step how to solve the following 72.18=3.90625(1+g)/(0.12-g) 8.6616-72.18g=3.90625+3.90625g 4.7554=76.08625g 0.0625=g My question is how did they arrive at 8.6616-72.18g=3.90625+3.90625g step? Please break it down for me.

please help I can not understand this. I need an implicit form answer for the general solution of differential equation dy/dx=2(e^x-e^-x)/y^2(e^x+e^-x)^4 with (y>0). I have separated the y^2 to the left hand side to become 1/3y^3 but have no idea how to make the right hand ...
7. ### Socials 1 question

How does birth control affect our world population? Please give me a list of ideas, no sites please I know it helps reduce population growth rate but please tell me more about countries who don't have birth control and what it results in etc.. Thanks :)
8. ### chemistry

Please help me with my formal report on "Potentiometric Determination of the Purity and Dissociation Constant of Potassium Hydrogen Phthalate" Please give me links to websites that could be used for my reference... In addition, please do suggest books that discuss ...
9. ### Maths

Factorise as far as possible: 1) 2a^2b + 8a^2b^2 The answer i got for this is 2ab(a+4ab). I'm not entirely sure if this is fully factorised or not. Can you please correct me if i am wrong. 2) x^2 + 5x - 6 I'm not sure how i can do this. Can someone please explain how without ...
10. ### calc (confused)

A wedge is cut from a right circular cylinder of radius r by two planes, one perpendicular to the axis of the cylinder and the other making an angle (beta) with the first. Find the volume of the wedge by slicing perpendicular to the y-axis. Please show all steps and ...
11. ### Math geometry

Please help , I only need the second part of the question Betty picks 4 random marbles from a bag containing 3 white , 4 yellow and 5 blue marbles The probability that exactly 1 of the 4 marbles drawn is blue is (0.3535) . The probability that at least 1 of the 4 marbles drawn...
12. ### anyone solve it....

Question 1 Describe the following descriptors. Give their type and the value of all their fields: i.dd 01234567h, 789abcdeh ii.dd 30405060h, 70809010h Please remember these things, especially #s 1 and 2: 1. This is a homework help website; please put your subject (math, ...
13. ### Calculus!!!

I need your help... I've posted this question a while ago but no one has answered it yet. Please please help me. Which of the following series can be used to compute ln(.8)? a) ln(x-1) expanded about x=0 b) lnx about x=0 c) ln x in powers of (x-1) d) ln(x-1) in powers of (x-1...
14. ### Math, help needed

Kate bought 3 CDs and 1 DVD at a store. Her friend Joel bought 2 CDs and 2 DVDs. If Kate spent \$20 and Joel spent \$22, determine the cost of a CD and DVD. ~Please provide an explanation as well. Please and thanks!

1. What is the value of b in the equation b + 8 = 13? A. 5**** B. 8 C. 13 D. 21 2. The steps below show the incomplete solution to find the value of x for the equation 7x − 3x − 4 = −1 + 21: Step 1: 7x − 3x − 4 = −1 + 21 Step 2: 7x − 3x − 4 = 20 Step 3: 4x − ...

Gender Math M 690 M 550 F 800 F 610 M 540 F 660 M 700 M 560 F 560 M 390 F 530 M 560 F 590 F 520 M 740 F 560 M 620 M 700 M 620 F 500 M 760 F 710 M 590 M 670 M 670 a. Determine whether the sample provides statistical evidence that males have higher Math scores than females at ...
17. ### math

Please help solving this problem. Solve the following word problem: One poll reported that 48% of city residents were against building a new stadium. The polling service stated that the poll was accurate to within 3%. What is the minimum percent of city resident that oppose ...
18. ### Math

Andrew factored the expression 28x^3-42x^2+35x as 7x(4x^2+6x-5). But when Melissa applied the distributive law and multiplied out 7x(4x^2+6x-5) , she got 28x^3+42x^2-35x ; thus, Andrew’s solution does not appear to check. Why is that? Please help Andrew to understand this ...
19. ### Math

two functions are defined as follows: f(x)=3/x+1 and g(x)=x-6 a) Write the equations of the vertical and horizonal asymptotes of f. b) Determine the coordinates of the points where f(x) = g(x) Thank you so much for huge help Is ti correct please? answer for a) vertical asympt...
20. ### MATH

Draw the graph of the equation 4x²-6x+3 using the -2≤x≤3 use a scale of 2cm to 1unit on the x-axis, 1cm to 4units in the y-axis. Find the graphfind; (a) minimum value of y (b) The roots of the equation 4x²-6x-3=0 (c) The value of x when y=5 (d) The solution set of the ...
21. ### math

how do you diverse fractions to decimals and visa versa Just take the top number and divide it by the bottom one. For example, if you have 3/10, take 3 and divide it by 10, giving you .30 and this is 30%. Oh, the the other half, if you have a decimal. .1 =tenths place .11 =...
22. ### Math

Question. I have some math problems that I really need help with and this is all new to me. The direction are as follows: Combine like terms 7x4 -5x4 the number four is square root. I don't understand at all what to do. Please help.
23. ### Math

There was a 6 square foot piece of wrapping paper for a birthday present. It takes 3 3/8 square feet pg the paper to wrap the present. How many pieces of 6 square foot paper are needed to wrap 3 of these presents? Please help me. I tried dividing. Please anyone!
24. ### english grammar

please give me some outlines on this topic - the government has granted a large amount of money to your school to build a hobby room and buy instruments for the school orchestra . why would you like to have the two in your school. please explain a few lines on this topic please.
25. ### Math

Create a Raptor Flowchart that calculates the amount a person would earn over a period of time if his or her salary were five cents the first day, ten cents the second day, and so on doubling each day. Your program should: 1. Request the number of days. 2. Display a table ...

Question: If A= 29 degrees and a= 4.6, find c. There is a diagram shown in the textbook. b is adjacent, c is the hypotenuse, and a is opposite. I know I'm suppose to use SOH CAH TOA, and i tried using tan, but Im not getting the correct answer. i looked in the back of the ...
27. ### Math

Does 0.21 * 0.05 = 0.0105? * means multiply. Yes.

(r/2) sq. would that simplify to r? do you mean (r/2)^2 which is (r^2)/4
30. ### Math

Why is it helpful to graph the solutions of an inequality?
32. ### Math

write in standard form (1,4) (5,7)
34. ### math

can anyone please explain to me how come x=pi can't not represent a function?
35. ### Math, again

Please explain how to do this problem: 5 + 3 x 2 + (4+2)= I did 5+3=8 x2+ 16 +6=22 did I do this correctly? Thank you...
36. ### Math

evaluate f(3) when f(x)=5x=9 please help me. i don't understand what the f stands for and what im supposto do... thanks!

what is the coordinates of an acute triangle with vertices at (0,0) and (0,-6)

39. ### math

Simplify: (1+i)/(2-i) A)(1/3)+(2/3i) B)(1/5)+(2/5i) C)(1/3)+(i) D)(1/5)+(3/5i) I have no clue please explain

43. ### Math

Please illustrate how to rotate triangle A(2,0), B(7,0),C(7,2) 90 degrees.
44. ### math ( show work please )

117.11 divided by 4.9
45. ### math

simplify this expression and please show work. 2(3x+y)+5(x+2y)
46. ### math

please show me how to work this problem 76 x45

yx3 _____ How do I slimplfy y6x4
48. ### math help pleaseee (: ! <345

sqrt32x + 3sqrt8x help please !
49. ### Math

Can someone help me solve this please A*.3=B A-B=150,000
50. ### Math

what are the next three numbers in this pattern 2,3,4,6,6,9,8? Help please.

52. ### Math 115

8/26=m/13 104/26 m=4 Check this problem please

54. ### Math

Let f(x) = (lne^2x)/(x-1) for x>1. If g(x) is the inverse of f(x0, then g'(3) = ? A. 2 B. 1 C. o D. -1 or E. -2 if you can show/explain how to get that please, thanks

58. ### Math

What is the area of a circle with a diameter of 12 ft by pi? Please help me with the formula~thanks!
59. ### Math:Evaluate Expressions

e/3-2x3 for e=41.4 Please explain. Thank you!
60. ### Math!!

Hi!! What is base-3 and how do you find it? How do you use the digits {0,1,2}? Please Help!! THank You!!
61. ### Math

Today's HW, due tomorrow, I'm lost, please help. 1. 5y - 7x = 10 2. 2y = 10 - 2 (x - 3) 3. y = 2x + 1/2 (3x + 1) + 1/4 (2x + 8)

63. ### math

-3x-2(5x-7)=-12 I need to solve for x, please help!! and show me how you did it if possible!
64. ### Math

How do you know when a graph is a function or not? Could I please have and example
65. ### math

3/4 + 1/10 I know the answer is 17/20, but I'm not sure how do get to this, please explain how to solve.

solve the system by the elimination method: 5x+3y=-13 & 7x-2y=11
67. ### math

-2x^2<30 1/abs value(11-9x)=6 Please show me how to do these two!!

69. ### math

Write in the form y=a(x-p)^2+q please show the steps.. a)y=-2x^2+6x+11 b)y=-x^2-3x-3 c)y=1.5x^2-9x+10
70. ### math

can someone please check my answer? -9<==4x-8<==-7 {x l -1/4 <== x <== 1/4} is this correct??
71. ### math

please can you show me how the get the prime factorization of 392. thank you

Write the ratio of 4 1/3 to 6 in simplest form.

74. ### Basic math

can you please explain division Ex. 16539/7
75. ### Math

-6(1+2x)=78 Please work the problem out, so I can see how it is done. Thank you!

78. ### math i need help please

evaluate the expression 7d-5cif d=7 and c=3 a)50 b)40 c)20 d)34

Solve 3^2x + 3^x - 21 check extraneous roots

8w-11=45 Please work this out for me Thanks.
81. ### Algebra

can you please help me with a math problem? -3xy^2 + 3x2y -2y^3 = xy + 2

83. ### Math 9

5 x 10^n = 5 Can someone please tell me the steps to solve for n? thank you!

Can a scalene right triangle tessellate?
85. ### Math

looking for help with find the slope and the y intercept for y = 5 please help
86. ### math

Ok i need 59% of 100 25% of 30 and 75% of 88 PLEASE!

92. ### math

1/3(9 + g) = g+1 can you please show me the steps and answer for this question?

If P (A) = 2/3, P (B) = 1/6, and P (A and B) = 0 what can you say about P (A or B)?

96. ### Math

I'm having trouble with these 2 problems. (-7+p)(8+p) & (p-7)(p+8)
98. ### Math

\$20768 the percentage for this is 21% please help me through the formula on how this is done get 21%
99. ### Math

x^8y^-5 over z^-4 Can you please show me how you got the answer. Thanks
100. ### Math

can you help me please factor the polynomial completely: 5x^2-22x+21