Wednesday
July 30, 2014

Posts by Carolina


Total # Posts: 65

Chemistry
How Many molecules Of sodium are contained in 2 L Of sodium dichromate? The density Of sodium dichromate is 3.7 g/ml

Math
Sarah was cutting fabric for a quilt. She cut a strip of fabric that was inches long into 5 equal pieces. When she was finished cutting, Sarah had a piece that was inches long. How long was each piece that she cut for the quilt

CST GEOMETRY
a tree is situated on level ground from a point 135 feet from the base of the tree the measure of the angle of elevation from the ground to the top of the tree is 43 degrees which is the height of the tree to the nearest foot?

Algebra
The area of a triangle is 22 , with a base of 8 yards. What is the height, in yards?

Math
4 ^ (3x–1) = 1.5625 × 10 ^(–2)

algebra
math question: you want to mat and frame a 5x 7 photograph. The perimeter of the outside of the mat is 60 inches. the mat is twice as wide at the top and the bottom as it is on the sides. Find the dimensions of the mat

MATH
459+20x=559 5 hours

MATH
459+20x=559 5 hours

physics
A student throws a set of keys vertically upward to his fraternity brother, who is in a window 3.95 m above. The brother's outstretched hand catches the keys 1.80 s later. (a) With what initial velocity were the keys thrown?

Chemistry
Magnesium metal reacts with HCl solution, liberating H2 gas and generating Mg2+ cations in solution. A 2.970-g sample of Mg metal is added to 50.0 mL of a 4.00 M HCl solution, and the reaction goes to completion. How many grams of H2 are formed?

chemistry
Iron reacts with HCl solution to give H2 gas and Fe2+ ions. Suppose that 5.4 g of iron are to be dissolved in 1.1 M HCl. What is the minimum volume (in mL) of the acid solution required to react with all of the iron?

Geometry
Two secants are drawn to a circle from an external point. The external secant length on the first secant is 12 and the internal segment length is 3x +1. The external secant length on the second secant is 15 and the two internal segment length is 3x-1. Solve for (x) to determin...

Math
Three times as many children as adults attend a concert on Saturday. An adult's ticket cost $7 and a child's ticket cost $3. The theater collected a total of $6,000. How many people bought tickets?

Math
Three times as many children as adults attend a concert on Saturday. An adult's ticket cost $7 and a child's ticket cost $3. The theater collected a total of $6,000. How many people bought tickets?

mba business reserach methods
Sampling A manufacturing company's quality control personnel have recorded the proportion of defective items for each of 500 monthly shipments of one of the computer components that the company produces. See data below. The company doesn't have time to review all of th...

algebra
x*84=12*91 x*84=1092 x=1092/84 x=13

3rd grade
hundred chart to subtract 12 from 46

math
explain how you can use a hundred chart to subtract 12 from 46

English
thanks :)

English
thank you :) What are the main differences among lifestyles?

English
i don't know that is traditional and modern lifestyles.

English
can you help me to answer these questions? What lifestyles (lifestyle is a manner of living that reflects the person's values and attitudes) can people lead? What are the main differences among lifestyles? What do you have in mind when you speak about luxurious, traditiona...

3rd grade
writing in math explain how you can use a hundred chart to subtract 12 from 46

Chemistry
Write net ionic equations for these reactions : Cu^2+ + Fe -> Hg^2+ + Fe-> Fe^3+ +Fe-> Pb^2+ +Fe-> Ag^+ + Fe-> and then the same but instead of Fe, addition of Cu to the six solution that I wrote before.. What ions are reacting in each case? please help me with ...

urgent math
write an integer for a profit of $12.00

health
thank you

health
what is a sentence with the word nutrition

math
can somebody show me how to do this? at what point on the graph of y= 3^x +1 is the tangent line parallel to the line y= 5x -1 ?

math
can someone actually show me all the steps to finding this deriviative. I keep doing the problem out and getting the wrong answer. Find the deriviative of: INVERSEsin(2t)^1/2

math
how do i find dy/dx using implicit rule? (x^2)y +x(y^2)=6

calculus
how do not understand how to find a deriviative of this function?Do i use chain rule and product rule? r= the square root of (theta*sin*theta)

Calc--derivatives
did u get e^(lnx) / x^2 ??

Calc--derivatives
ummm.. i dont understand your language! can you explain that in baby terms? thanks!

Calc--derivatives
find the der of y= x^(lnx) thanks

phyisics
why didyou use these equations Go to the bottom coconut 20=Vi*t-1/2 g t^2 Now go to the top coconut 20=40-1/2 g t^2

phyisics
and what do you mean by top and bottom? thanks

phyisics
waht is g?

phyisics
an orangutan throws a coconut vertically upward at the foot of a clif 40 m high while his mate simulaneously drops another coconut from the top of the clif. the two coconuts collide at an altitude of 20 m what is the initial velocity of the coconut that was thrown upward? i kn...

Health-Care
Some technical terms pass into common usage as knowledge about a field spreads. Think of three such terms that have passed into common usage recently

Math
compare to 1/2 to tell which fraction is greater 8/17 , 13/23

math
the water tank begins full.create a scatter plot to represent the amount of water in the tank over a 24-hours period

science! help
i know but i need more ideas!!

science! help
What are some ways that energy from the sun is being used in a community??? Please Help

5th grade science
What are some ways that energy from the sun is being used in a community!! Please Help

social studies!!
thanx!!

social studies!!
Why was a milliner important to the village?

social studies!!
What tools did a milliner use? I have needles, iron, thread, fabric, thimble, and scissors!

science
what force is keeping an object in the air and what force is bringing it down

science
I have a science fair project and i was wondering what is a good green plant to use that grows quickly?

social studies!!
THANX!! SOCIAL STUDIES IS CONFUSING SOMETIMES!!

social studies!!
What William Penn's and Benjamin Franklin's contribution to the Middle Colonies?

social studies!!
thanx!!! but i can't use it since i haven't learned about it!! It has to be about starting the middle colonies new york and new jersey!

social studies!!
I need a sentence using two of these three words!! proprietor, representative, and treaty!! HELP!!

English!!
thanx!!

English!!
I need help!! what is the blank? change: variable:: move:_______ private:public:: major:_______ ancient:old::______:new go:went::_____:rose tree:forest::star:galaxy please reply!!

math (factoring)
how do i factor: 4q² - 9r² ??

science
how dose oceanography effect the planet earth

algebra
yes thanx now i get it

algebra
ii still dont get it

algebra
i still dont get it

algebra
but why does X = -5 +9

algebra
how do you work this problem ???? . . . X+(-9)=-5

Math help needed here
please i need help in math now i'm in 10 grade but i'm very worry about the hspa i think that won't pass it if i don't have help i'm so confuse !!!

chem
He's right. When you reduce H2O2 in basic solutions you have to add OH- to balance the equation.

Geometry
how do you find length when you are given perimeter and width? area? the length of what??????? wow You divide the perimeter by the width!Somebody helped me with this question to. in.=4yd.

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