Posts by Angie

Total # Posts: 1,429

Science
thanks

Science
Is there another website? May 15th isn't on there..

Science
Is there any website that can tell me what the phase of the moon will be on May 15th?

Science
thanks

Science
what is the earth's time system based on? I think it's time zones..

Math
how did you get (10/12) sqrt 3?

Math
How do you simplify 5/¡Ì12? I know you have to multiply the denominator,¡Ì12, by a radical to make a perfect square.. I think you're supposed to multiply it by 12? But there seems to be other numbers multiplied by 12 that can make a perfect square...

Math
how do you solve this system? I'm using substitution.. y=3x+4 y=-x^2 First I combined it: -x^2=3x+4 I don't know how to solve it now..

Math
how many solutions are in this system: y=x^2+2x+5 y=-2x+1 I'm not sure, but I got no solutions.

French
do you know why I shouldn't include the ¨¤? and why the que shouldn't be there?

French
Question: Pendant que les vacances, ¨¤ qui rends-tu visite? My response: Pendant que les vacances, je rends visite ¨¤ ma grand-m¨¨re. am i right? i'm confused as whether or not i'm supposed to put the ¨¤ after visite.

Math
would i still get it right if i didn't factor out the gcf?

Math
on a test, if i put one of the answers i put above, would i still get it right?

Math
What do you get when you factor 2q^2+22q=-60? Is there more than one answer possible? I got 2 answers: 1. (2q+10)(q+6) 2. (2q+12)(q+5)

French
like you can't say "Le restaurant le plus bon est...",but you can say "Le restaurant le moins bon est...".

French
Why do you have to replace plus bon ina sentence with meilleur, but not when you're using moins bon?

Math
How did you get (3q + 1)(q +1) = 0? What happened to the 15?

Math
What are you supposed to get when you factor 3q^2+16q=-5? I got (q+3)(3q+1)

Science
ok thanks

Science
What time of day is hotter, 12 noon or 2pm? I know it's 2pm from experience, but I don't know why it's like that..

Math
thanks

Math
A math class has 25 students. There are 13 students who are only in the band, 4 students who are only on the swimming team, and 5 students who are in both groups. How many students are not in either group? I think it's 3 students?

French
thank you

French
is this correct too? this is what i ended up writing: La matière la plus utile est les sciences.

French
In French, how do you say "The ost useful subject is science? I need to know how to say the science part..is it plural, like math, and is it masculine or feminine?

French
thanks

French
yeah, that's the one! i remember now thanks

French
is there another way?

French
how do you say "subject" in french? I think there's one way to say it that starts with an m?

Math
the ways above is probably easier, but my teacher probably wants me to solve it by factoring..

Math
The sides of a square are all increased by 3 cm. The area of the new square s 64 cm^2. How can you find the length of a side of the original square?

Math
ok thanks..

Math
how do you factor 4x^2-35x-9=0?

Science
thank you!

Science
When it's winter in the northern hemisphere, it's summer in the southern hemisphere. So, if it's April in the northern hemisphere, is it still April in the southern hemisphere?

Science
If Earth's axis had no tilt, we'd only have spring and fall for seasons, right? But which hemisphere would get the vernal equinox and which would get the autumnal?

Math
I don't think there is any factor that can be multipl;ied by 2 to get -7..

Math
how do you factor 2c^2-7c=-5? I know that you have to change it to 2c^2-7c+5=0. Then you do this: (2c )(c ). But how do I find the two numbers? I can't think of one that works..

Math
thank you

Math
Mike and Kim invest \$8,000 in equipment to print yearbooks for schools. each yearbook costs \$5 to print and sells for \$25. How many yearbooks must they sell before their business breaks even? a. 1,600 b. 400 c. 320 d. 600 I know the answer is b, but I don't know how you ...

Math
thank you

Math
How can you match a parabola to it's graph? I know that in y=ax^2+bx+c, the a tells you if it opens upwards or downwards, and the c tells you the y-intercept..is there anything else?

Math
Never mind, I got it.

Math
I'm graphing the parabola f(x)=x^2+2. I'm going to make a table of values, and I'm choosing 5 values. How do I know which value I should choose as my 3rd value so I can make the parabola symmetrical?

math
copy and complete input-output table for the function y=2x - 5

Math
never mind, i get it, i wasn't supposed to solve any equations at all..

Math
Suppose you buy flour and cornmeal in bulk to make flour tortillas and corn tortillas. Flour costs \$1.50/lb. Cornmeal costs \$2.50/lb. You want to spend less than \$9.50 on flour and cornmeal, and you need at least 4 lb altogether. Write a system of inequalities that describes ...

science
oh, so it's d. cuz only plants do that..thanks

science
I don't know..

science
all of the following are life functions of animals except? a. obtaining energy from food b. responding to changes in the environment c. production of new individuals d. synthesizing food from carbon dioxide and water I think it's b.

science
what would make it sink halfway down?

science
thanks, but can you explain my second question?

science
why doesn't density depend on size? If you cut a block in half, and put it in water, wouldn't the density change because I think half a block wouldn't sink all the way in water?

Math
i get it..thanks!

Math
You have a total of 21 coins, all nickels and dimes. The total value is \$1.70. Write and solve a system of equations to find the number of dimes d and the number of nickels n that you have. I already wrote the equations: n+d=21 and 10d+5n=1.70. But I don't know how to ...

how u get -b?

History
Maybe another thing could be that it costs a lot of money for all the weapons?

Algebra
12+6x<30+4x+8 6x-4x<38-12 2x<26 x<13

Science
How much of a radioactive material with a half-life of 12,000 years is left after 36,000 years of decay?

Science
thanks

Science
for the most of the Jurassic Period, were there coral reefs?

Science
there are 6: lever, inclined plane, wheel and axle, screw, wedge, and pulley

Science
ok thanks

Science
Why two half-lives?

Science
A material has 32 atoms in all; 24 decayed and the rest undecayed. If the half-life of the radioactive material is 1000 years, what is the age of the material? a. 1000 years b. 2000 years c. 3000 years d. 4000 years

statistics
Flaws in a carpet tend to occur with a Poisson distribution at a rate of one flaw every 300 square feet. What is the probability that a carpet that is 9 feet by 14 feet contains no flaws? Probability = how would you set it up in excel?

Chemistry/math
ok thanks

Chemistry/math
why is it to the -1?

Chemistry/math
0.0231?

Chemistry/math
what does k stand for?

Chemistry/math
Cesium-137 has a half-life of 30 years. Suppose a lab stored a 30-mCi sample n 1973. How much will be left in 2063?

Math
You deposit \$200 into an account earning 5%, compounded monthly. How much will be in the account after 2 years?

Math
commutative property

Math
why are the two formulas for finding compund interest: B=p(1+r)^x and y=a*b^x acually the same?

Math
thanks

Math
Suppose your parents deposited \$1500 in an account paying 3.5% interest compunded annually(once a year) when you ere born. Find the account balance after 18 years. So how do you plug all this information into this formula: B=p(1+r)^x?

Math
Suppose your parents deposited \$1500 in an account paying 3.5% interest compunded annually(once a year) when you ere born. Find the account balance after 18 years. So how do you plug all this information into this formula: B=p(1+r)^x?

Math
thanks

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)

unit rate
isn't it 23 dollars/hour?

unit rate
You divide 88 by 4, and you get 22 students per class.

Math
This is a continuation: Hannah's average speed for the remainder of the trip to her cousin's house was 40 miles per hour. How long, in hours, did it take her to drive the remaining difference? I got 33.3 mph by dividing 40 by 1.2, but i'm not sure if i'm right...

Math
thank you

Math
All I know is that it took her 1.2 hours to get halfway to her cousin's house.

Math
Hannah took a trip to visit her cousin. She drove 120 miles to reach her cousin's house and the same distance back home. What was her average speed, in miles per hour, for the first 1.2 hours of the trip?

Math
thanks

Math
is a horizontal line on a graph a function? I think it is.

Math
thanks

Math
What would be the x-intercept of y=-|x-3|? I think it would be -3.

Math
thanks

Math
well, i got x=-8, so the answer should be c?

Math
but how do you set it up as simultaneous equations?

Math
what do you mean by simultaneous equations?

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...

Math
why do you think it's d?

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}

Math
thanks

Math
Which expression represents (2x^3)(8x^5)/4x^6? I think it's 4x^2.

Math
omg, sorry for all those spaces!

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)