Wednesday

September 28, 2016
Total # Posts: 35

**Physics **

Heat is added to 0.77 kg of ice at -25 °C. How many kilocalories are required to change the ice to steam at 131 °C? I dont even know where to begin with this

*April 18, 2015*

**Physics**

How much heat is required to convert solid ice with a mass of 875 g and at a temperature of -11.5 °C to liquid water at a temperature of 52.0 °C? (The specific heat of ice is cice = 2100 J/kgK, the specific heat of water is cwater = 4186.8 J/kgK, and the heat of fusion...

*April 18, 2015*

**math help**

Is it b for number 1?

*January 16, 2015*

**math help**

1. 5/3+(-1/5) a. -22/5 b. -22/15 c. 22/15** d. 28/15 2. Which property is illustrated by the statement? (3+2.8)+5=3+(2.8+5) a. Commutative Property of Addition b. Commutative Property of Multiplication c. Inverse Property of Multiplication d. Associative Property of Addition **

*January 16, 2015*

**SpanishiA**

it doesnt show up on google

*November 19, 2014*

**SpanishiA**

Ok i choose a for 4 ,and d or c for the first one

*November 19, 2014*

**SpanishiA**

Which type of animal does the rain forest contain more than 4,000 different species of? a. birds **** b. cats c. butterflies d. spiders Choose the correct form of the verb estar that would be used in this sentence? I am at home. a. estar b. estoy *** c. estais d. estamos They ...

*November 19, 2014*

**Please help-algebra**

So its b?

*October 29, 2014*

**Please help-algebra**

I went for d.. Accidentally wrote c for d

*October 29, 2014*

**Please help-algebra**

A lawn care company charges a $10 trip fee plus $0.15 per square foot of x square feet of lawn for fertilization. Which equation represents the relationship? a. x= 0.10y+15 b. y= 0.15x+10 c. y= 10x+0.15 c. x= 10y+0.15 *

*October 29, 2014*

**Finance**

I really really need some help on this one!!! All I need is for someone to point me in the right direction. I have filled in the blanks of the income statement and figured out what the net income is. I am very stuck. How do I get the depreciation expense based on this ...

*September 7, 2014*

**Finance**

How do I get the depreciation expense based on this information: sales = $51,700; costs = $39,100; addition to retained earnings = $2,925; dividends paid = $960; interest expense = $1,510; tax rate = 30 percent

*September 7, 2014*

**Statistics**

State the null hypothesis, Ho, and the alternative hypothesis, Ha, that would be used to test these claims. < ¡Ü = ¡Ù ¡Ý > (a) There is an increase in the mean difference between posttest and pretest scores. Ho: ¦Ìd 0 Ha...

*October 29, 2013*

**Statistics**

Find the critical value for the hypothesis test, given the following. (Give your answer correct to two decimal places.) Ha: ó1 > ó2, with n1 = 13, n2 = 8, and á = 0.025 F=

*October 29, 2013*

**Statistics**

Thanks for your help!

*October 29, 2013*

**Statistics**

Find the 99% confidence interval for the difference between two means based on this information about two samples. Assume independent samples from normal populations. (Use conservative degrees of freedom.) (Give your answers correct to two decimal places.) Sample Number Mean ...

*October 29, 2013*

**Chemistry**

The solution with with the highest concentration of hydronium ions will be the solution with that appears the most acidic. In which case the solution with the smallest PH... 3.21

*March 19, 2013*

**math**

what is the answer to this problem : there are 1.5 times more carp in the lake this year than last year. this year's carp population is 423. write an equation to determine how many trout are in the lake this year.

*February 13, 2013*

**Calculus (math)**

Write a formula for f^-1 (x) if f(x) = (x+5)/(3x-4) and state the domain of f-1

*October 22, 2012*

**math**

Solve using elimination method -7x+5y=-56;-21x-2y=-168

*May 1, 2012*

**physics**

The justice league is playing baseball with 5kg rockets. The flash's top speed is 300m/s and a home run requires a 180m run. The rockets accerlate at 1200m/s^2, Superman catches it 30m from home, and decelerates it with 2700N. Once he stops the rocket, he applies a 2700N ...

*March 30, 2012*

**math**

Mr. Browne bought six shirts at the same sale. They had been marked $31 each. How much did he save on the six shirts?

*January 24, 2012*

**math**

what is y=xsquared+2x-15 in factored form?

*April 8, 2011*

**chemistry**

Write the balanced equation and solubility product expression for the solubility equillibrium of Mn3(PO4)2: Ksp expression?

*November 29, 2010*

**Chemistry**

Acetic acid is a polar molecule and can form hydrogen bonds with molecules. Therefore, it has a high soulubility in water. Yet acetic acid is also soluble in benzene (C6H6), a nonpolar solvent that lacks the ability to form hydrogen bonds. A solution of 3.8g of CH2COOH in 80 g...

*October 18, 2010*

**math**

i need to know 1,000 x 340

*September 26, 2010*

**4th grade**

hi im a fourth grader can you help me i need to know 10 triangles and how to put them in colors ??????? i have now clue what to do

*September 23, 2010*

**4th grade**

sorry my spelling isnt that good

*September 20, 2010*

**4th grade**

the meaning of meadian it the number in the middle the range is the greater number +the least number

*September 20, 2010*

**government**

what is the correlation between a form of government and its economic system?

*September 21, 2009*

**Statistics**

oh wait...should use the 97.5 percentile to get the answer to the 2.5% top students?? because they wouldn't have negative z-scores, right?

*May 23, 2009*

**Statistics**

At one university, the students are given z-scores at the end of each semester instead of traditional GPA's. The mean and standard deviation of all the student' culmulative GPA's, on which the z-scores are based, are 2.7 and .5 respectively. i understand how to ...

*May 23, 2009*

**math**

what is the value of 6 in 146027?

*February 14, 2009*

**Math**

There are four light switches in the room. They can be in either of two positions - on or off. How many possible ways can the four switches be arranged? What if there were eight switches?

*January 22, 2008*

**math**

120 km = 463 km ------------.... --------- 1cm(map) map distance (cm) Cross-multiply to get algebra equation. 120x =463 x = 463/120 = 3.858333333 (round off to 3.9 since 3.858 is closer to 3 9/10 than 3 8/10 - always round up from 5 or greater 3.8(58) x = 3.9 cm so ya I think ...

*November 24, 2007*

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