Friday

September 4, 2015
Total # Posts: 1,236

**Math**

what do you mean by simultaneous equations?
*April 14, 2009*

**Math**

The equations 5x+2y=48 and 3x+2y=32 represent the money collected from school concert ticket sales during two class periods. If x represents the cost for each adult ticket nd y represents the cost for each student ticket, what is the cost for each adult ticket? a. $20 b. $10 c...
*April 14, 2009*

**Math**

why do you think it's d?
*April 14, 2009*

**Math**

Which interval notation represents the set of all numbers from 2 through 7, inclusive? a. (2,7} b. (2,7) c. {2,7) d. {2,7}
*April 14, 2009*

**Math**

thanks
*April 14, 2009*

**Math**

Which expression represents (2x^3)(8x^5)/4x^6? I think it's 4x^2.
*April 14, 2009*

**Math**

omg, sorry for all those spaces!
*April 14, 2009*

**Math**

Suppose your community has 4512 students this year. The student population is growing 2.5% each year. Write an equation to model the student population. (y=a*b^x)
*April 14, 2009*

**language**

isn't it supposed to be "breathes"?
*April 14, 2009*

**Math**

thanks
*April 13, 2009*

**Math**

If I were to graph 20a+34b is greater than or equal to 240, which would be the easier way: graphing it by finding the x and y intercepts, or graphing it by finding the slope and y-intercept?
*April 13, 2009*

**Math**

thanks
*April 13, 2009*

**Math**

How do you know if the relationship shown by the data in a table is linear?
*April 13, 2009*

**Math**

thank you!
*April 11, 2009*

**Math**

if you were to graph x=5, how would it look like? And where can I find an online graphing calculator? and what does it mean in math for something to be undefined? What exactly is x=5? is it a function or something?
*April 11, 2009*

**math**

on second thought, it's undefined.
*April 11, 2009*

**Math**

thanks
*April 11, 2009*

**Math**

so it's not undefined?
*April 11, 2009*

**Math**

Why is it not possible to write the equation of the line through (8,-5) and (-8,-9) in slope-intercept form??
*April 11, 2009*

**math**

2/7 = 6/21
*April 11, 2009*

**math**

when you're looking at a graph that shows the height of a balloon over time, how can you know the rate in which it rises?
*April 11, 2009*

**Math**

never mind, i got that too.
*April 11, 2009*

**Math**

Never mind, I already got it: y + 1 = 5/6 9x + 2). Now how do you rewrite this equation in standard form using integers?
*April 11, 2009*

**Math**

A line passes through (2,-1) and 8,4). How do you write an equation for the line in point-slope form?
*April 11, 2009*

**Math**

I got y=-3x+29. thanks
*April 11, 2009*

**Math**

What are you supposes to do to write the equation of a line that is perpendicular to the given line and that passes through the given point: 4x-12y=2; (10,-1)
*April 11, 2009*

**Math**

ok then
*April 11, 2009*

**Math**

I think a parabola can have 2 x-intercepts..then is there a graph of a function where there's no x-intercept at all?
*April 11, 2009*

**Math**

Can a graph of a function ever have more than 1 x-intercept?
*April 11, 2009*

**Math**

thanks..in your opinion, is the way you did easier than doing it with point-slope form?
*April 10, 2009*

**Math**

How are you supposed to write an equation for the line that is parallel to the given line and that passes through the given point? For ex., what do you do for y = 3/4 x - 9, (-8,-18)?
*April 10, 2009*

**social studies**

"According to Wikipedia, there are twenty-two official languages in India. Also from the Wiki article: "Individual mother tongues in India number several hundred (SIL Ethnologue lists 415), and 24 languages are spoken by more than a million native speakers, 114 by ...
*April 10, 2009*

**math**

by the way, which way do you think is easier: Finding the intercepts(like above), or rearranging the inequality and graph it by knowing the slope and y-intercept?
*April 10, 2009*

**math**

thank you!
*April 10, 2009*

**math**

Suppose you need $2.40 in postage to mail a package to a friend. You have 9 stamps, some $0.20 and some $0.34. How many of each do you need to mail the package? So to solve this problem, I came up with two inequalities: 1. a + b is less than or equal to 9 2. 20a + 34b is ...
*April 10, 2009*

**Social Studies**

thanks
*April 9, 2009*

**Social Studies**

I'm writing an essay on fashion in the 1960s. What are subtopics I should write about?
*April 9, 2009*

**science**

oh ok
*April 7, 2009*

**science**

then what is it supposed to be, reptiles?
*April 7, 2009*

**science**

Which life-form was most abundant 250 million years ago? a. dinosaurs b.reptiles c.bony fishes d.trilobites I think it's d.
*April 7, 2009*

**7th grade**

oops, sorry, i posted for the wrong thing.
*April 7, 2009*

**7th grade**

well, repeating decimals just keep on repeatin, like 0.0666...the 6 just keeps on repeating. or like .063490634906..the 06349 keeps on repeating. terminating decimals end, like 0.75. or 025. or 0.125
*April 7, 2009*

**1st grade**

yeah, but the correct way to write it would be: He doesn't want to read Snow White.
*April 7, 2009*

**science,details about fish HELP PLS!!!!!!!!**

answer to 1st q: eating, pets, animals they eat would be over populated answer to second q: animals they eat would be over populated answer to third q: end overfishing answer to 4th q: (got this from internet)The overfishing of a particular species does not just damage the ...
*April 7, 2009*

**math**

oh, i remember now, thanks
*April 7, 2009*

**math**

linear equations parallel to each other have same slope. what about perpendicular lines??
*April 7, 2009*

**Social Studies**

1. a warehouse,especially if the manufacturer owns the space. 2.Support structures that aid in the force or power needed to drive the machines used in production 3. Dams that help to generate power for the factory operation
*April 7, 2009*

**4th grade**

just type "how to make a medieval castle model" on google.
*April 7, 2009*

**6th grade math**

well, repeating decimals just keep on repeating, like 0.0666...the 6 just keeps on repeating. or like .063490634906..the 06349 keeps on repeating. terminating decimals end, like 0.75. or 025. or 0.125
*April 7, 2009*

**6th grade math**

i found this: Surface Area of a Rectangular Prism = 2ab + 2bc + 2ac (a, b, and c are the lengths of the 3 sides) In words, the surface area of a rectangular prism is the are of the six rectangles that cover it. But we don't have to figure out all six because we know that ...
*April 7, 2009*

**math**

-2y=-3x+12 y=2/3x-6 so, slope is 2/3, y-intercept is -6.
*April 7, 2009*

**math**

1. y=3/2x+7 so the equation is y=-2/3x+7 sorry, not sure about 2nd question
*April 7, 2009*

**french**

thanks
*April 7, 2009*

**french**

can "avoir sommeil" mean to be tired?
*April 7, 2009*

**french**

what does "avoir" mean?
*April 7, 2009*

**science**

thanks
*April 6, 2009*

**science**

Scientists believe that Earth's early atmosphere changed in composition as a result of a. the appearance of oxygen-producing organisms b. the drifting of the continents c. the changes in Earth's magnetic field d. a transfer of gases from the Sun
*April 6, 2009*

**Help me expand my paper PLEASE**

how many subtopics do you need?
*April 6, 2009*

**math**

thanks
*April 6, 2009*

**math**

When you write 4x-6y is greater than or equal to 16 in slope-intercept form,is the answer y is less than or equal to 2/3x + 8/3?
*April 6, 2009*

**Math**

thanks
*April 6, 2009*

**Math**

why is it that in a linear inequality, each point on a dashed boundary line is not a solution?
*April 6, 2009*

**physics: true or false**

you got the second one right.
*April 6, 2009*

**6th grade math**

If the number was positive, then you subtract. If the number was negative, then you add. Basically, just do the opposite..
*April 6, 2009*

**science**

..what does that mean?
*April 4, 2009*

**science**

how old is a mammoth's tusk if there is only 25 percent C-14 remaining in the sample? a.5700 years b.11400 years c.17100 years d.22800 years
*April 4, 2009*

**science**

thanks
*April 4, 2009*

**science**

Which statement best explains why dating geologic materials from the Quarternary Period uses a different radioactive isotope than for materials from the cambrian Period? a. all rocks contain radioactive substances. b. some isotopes decay faster than others. c. not all isotopes...
*April 4, 2009*

**4th grade math**

oops, not 1.0492 * 104, but 1.0492 * 10^4
*April 4, 2009*

**4th grade math**

it's another word for scientific notation. It's "A method of writing or displaying numbers in terms of a decimal number between 1 and 10 multiplied by a power of 10. The scientific notation of 10,492, for example, is 1.0492 ¡Á 104."
*April 4, 2009*

**English**

yeah, basically
*April 4, 2009*

**9th grade - Algebra???**

standard form is ax+by=c. so just plug them all into that form. for example, the first one would be -14x-18y=24. you have to change the sign of 18 because you move it to the other side of the equation.
*April 4, 2009*

**science**

thanks
*April 3, 2009*

**science**

but is there any difference between them?
*April 3, 2009*

**science**

is disconformity and unconformity the same thing?
*April 3, 2009*

**science**

i got this from wikipedia: The stratosphere is a region of intense interactions among radiative, dynamical, and chemical processes, in which horizontal mixing of gaseous components proceeds much more rapidly than vertical mixing.
*April 2, 2009*

**math**

Suppose you have $28.00 in your bank account and start saving $18.25 every week. Your friend has $161.00 in his account and is withdrawing $15 every week. When will your account be the same?
*April 2, 2009*

**math**

thanks
*April 2, 2009*

**math**

like, how does graphing help you solve a system??
*April 2, 2009*

**math**

how can you solve a system by graphing?
*April 2, 2009*

**science**

no, i was just replying to chairty, that's all..
*April 2, 2009*

**science**

Oh, that's because I need help in math right now, but I'm okay with science..
*April 2, 2009*

**science**

The majority of our weather occur in this layer of the atmosphere, the troposphere.
*April 2, 2009*

**7th grade**

here's what i found on the interent: In Aruba the newspapers almost never publish a weather report. They don't need to. Around here, "sunny and warm" is not news. With an average rainfall of less than 20 inches a year, an average daytime temperature of 82&...
*April 2, 2009*

**Science**

I just know that "The lactic acid system is capable of releasing energy to resynthesise ATP without the involvement of oxygen and is called anaerobic glycolysis."
*April 2, 2009*

**geography**

you mean what is aruba's latitude and longitude? it's 12¡ã30' North and 69¡ã58' West.
*April 2, 2009*

**science**

thanks
*April 2, 2009*

**science**

usually, which is younger, the pebbles in sand, or the sand surrounding the pebbles? I think it's the pebbles in sand.
*April 2, 2009*

**math**

since y=mx+b..
*April 2, 2009*

**math**

isn't it y=5x+6?
*April 2, 2009*

**science**

also, how can major volcanic eruptions be used to correlate rock layers at different locations around the world?
*April 2, 2009*

**science**

Are faults, folds, intrusions, and extrusions always younger than the strata in which they are found??
*April 2, 2009*

**science**

looking at the geologic time scale of new york, for the archaen eon, how many eras are there? i think it's 3..
*April 2, 2009*

**math b**

i^13, since you subtract 3 from 16.
*April 1, 2009*

**Math**

i see..
*April 1, 2009*

**Math**

Define variables and write a system of equations for this situation. Solve using substitution. Suppose you want to join a video store. Big Video offers a special discount card that costs $9.99 for one year. With the discount card, each video rental costs $2.49. A discount card...
*April 1, 2009*

**math**

I'm posting things cuz i suck at math. I did: 2-0.12b-1.2b=-3 2-1.32b=-3 -1.32b=-3-2 -1.32b=-5 b= -5/1 divided by 1 32/100 b=-5/1 divided by -132/1 b=5/1 * 1/132 b=5/132
*April 1, 2009*

**math**

no, i got 5/132.
*April 1, 2009*