Friday
August 1, 2014

Posts by Marian


Total # Posts: 51

physics-lenses
trace and describe the image formed by a convex lens (object between 2f and f)

math
if the manufacture from the question above charge a 4 1/2 late fee, how much would city cellular owe if they did not pay the balance by the net date?

Physics
A 23.9kg box rests on a table. A 16 kg box is placed on top of the first box, as shown. determine the total in N that the table exerts on the first box.

MATHS
thank you steve is correct!

MATHS
The slope of the straight line passing through the points (0,0) and (3,2) is: 2/3 TRUE OR FALSE?

MATHS
i have limit x->0

MATHS
lim(sqrt(x^4-x^2))=0 True or false?

STATISTICS
TRUE OR FALSE? Simple regression cannot be applied when r of two variables is very low.

MATHS
YES!!!! thank you very much!!

MATHS
The function f (x) = x^4 has an axis of symmetry the vertical axis y. True or False?

MATHS
Thank you Steve!!!

MATHS
In the values interval [0, 2p] the function f (x) = sin(x) has more periods by the function g (x) = sin(3x). True or False?

STATISTICS
Researchers asked questions in 1001 randomly selected adults in Russia. We found a statistically significant, strong positive correlation between income and the number of recycling bins filled their houses per week (r = 0,77). Choose the best interpretation of the result. &nbs...

STATISTICS
I state at the first row... True or false?

STATISTICS
True or False? A researcher is interested in studying whether there is a correlation of IQ with health. For this purpose he selected a sample of 261 people and asked them to complete two questionnaires: one for IQ and one for health. After evaluating the questionnaires each pe...

Stats
ohhh.. Why? the significance is not 49%?

Stats
There are two boxes, each with several million tickets marked “1” or “0”. The two boxes have the same number of tickets, but in one of the boxes, 49% of the tickets are marked “1” and in the other box 50.5% of the tickets are marked “1...

CAPA
Na+ and Se2-

chemistry
my grandmother was being funny

chemistry
How many atoms of H are in 6.0 moles of H2O? A. 7.22 x 1024 atoms B. 7.12 x 1027 atoms C. 7.32 x 1024 atoms D. 7.72 x 1024 atoms A

chemistry
How many moles are in 1.50 x 1023 molecules NH3? A. 2.49 x 10 -1 mol NH3 B. 2.49 x 101 mol NH3 C. 2.65 x 10 -1 mol NH3 D. 2.78 x 10 1 mol NH3 maybe B

speech
what figure of speech is "it is a lovely little bright snake of a word"

algebra
Factorise the expressions 9y^2-25 x^2-x-12 I'm totally stuck!

chemistry
1. Since it's at the equivalence point, the pH will be 7.00!

maths
x^2-7x = 0 substitue x=7 into the equatiopn and explain why this shows that x=7 is the solution. ok so i do this: if x=7 then the equation becomes 7^2-49=0 7^2=49 49-49=0 so x=7 is correct (is that explanation enough?) now i have to write out a complete solution to the orginal...

Math
Is this the full question? It seems confusing, something is missing in the instructions.

maths
I've put what i think are the answers at the bottom. Consider the inequality −2< d < 4 - (the first symbol is meant to be less than or equal to) Select the two lists of integer values of d in which all the values satisfy the inequality. Select...

maths
I've put what i think are the answers at the bottom. Consider the inequality −2 ¡Ü d < 4 Select the two lists of integer values of d in which all the values satisfy the inequality. Select one or more: a) −3, −2,...

maths
Select the option that is the equation y=2x-2 rearranged to make x the subject of the equation. Select one: x=y+1 or x=-y/2+1 or x=-y+1 or x=-y/2-2 or x=y/2=1 or x=y-2 or x=-y-2              

maths
This question is about plotting two points and drawing the straight line through them. Which two options are correct instructions for plotting two points which can then be used to draw the line y=2x+5. Select one or more. A) Plot the points (1.3) and (2,-1) b) Plot the points ...

Maths
Thanks. i got -60 the first time, but when i was checking it I was getting -6 so I'll have to see what i was doing wrong! Thanks!!

Maths
Thanks that helps me a lot!

Maths
Thanks. The final answer is 8 (if I'm right) but that means its not a fraction. so do I have to do something else or am I that bad at maths that I'm wrong again!!

Maths
Thanks for that. hopefully I'll get a better grasp of equations soon!!

Maths
Solve the equation, give your answer as a fraction in its lowest terms: x-2= 4x+7/6 (the whole part 4x+7 is over the 6) I'm getting -6 !!

Maths
Maybe I'm reading it wrong but it looks like two DIFFERENT answers. Mykmoloko how'd you come up with the answer -3, I'm trying to understnad the way the methods work. Thanks M

Maths
Solve the equation: Give your answer as a fraction in its lowest terms: 2x-5=7-6x I'm getting -1/3 but i think thats wrong!?! Would appreciate some help please thanks! M

maths
I'm stuck here don't have a clue what to do. I've read all my school textbooks but it doesn't make much sense!! The numbers after the letters are small figures as in they u3 meaning( u x u x u). Ta! Factorise the expression 5 u3v +15 uv2-10v taking out the high...

maths
Thanks I understand now!

maths
I am trying to understand what to do here.. need help asap!! Thanks! M Solve the following pair of simultaneous linear equations. 3x + 4y =5 2x + 2y =2 Select the option corresponds to the solution. Select one: x = 9 / 7, y = 2 /...

accounting
what is the firm's predetermined fixed overhead rate

chemistry
How many moles of acetic acid are in 100ml of a 0.05M solution of acetic acid?

US Government
Thanks so much! All I could find was that they also throw rice at weddings. I found a lot of differences in cultures, but couldn't find any specific similarities. Can you think of any more?

US Government
Describe 5 customs that Americans and people from India share.

Chemistry
thank you! :)

Chemistry
The chemical reaction of 100 g of salicylic acid, C7H6O3, with excess acetic anhydride produces 50.0 g of aspirin, C9H8O4, according to the equation. What is the percentage yield for the reaction shown below? Please show your work. C7H6O3 + C4H6O3 → C9H8O4 + C2H4O2

6th grade
this is for science what is solubility dependent on

space
What is space exploration?

space
What is the importance of Space exploration?

Science
What is the maximum that a shell can hold for electrons? What if there are 31 electrons?? I'm confused...

Music
Can someone please give me an example of a movie or literature that would make a successful Lied.

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