# Posts by tre

Total # Posts: 41

**Math**

-1/2+2=-2 1/2

**Math**

-2/5+3/5= 1/5

**Geometry**

In circle O, PQ = 20, RS = 20, and the measure of arc PT is 35. Find the measure of arc RS.

**Chemistry**

Aqueous sulfuric acid H2SO4 will react with solid sodium hydroxide NaOH to produce aqueous sodium sulfate Na2SO4 and liquid water H2O . Suppose 31. g of sulfuric acid is mixed with 11.5 g of sodium hydroxide. Calculate the maximum mass of sodium sulfate that could be produced ...

**Language Arts**

part b a

**Math**

b

**science**

What is the form of the graph, and what is the approximate distance traveled by the aircraft in 7.5 seconds

**math**

Last summer,at camp okey-fun okey, the ratio of the number of boy campers to the number of girl campers was 8:7. If there were a total of 195 campers how many boy campers were there?____girls campers___

**Math**

At country concert, the ratio of the number of boys to the number of girls is 2:7. If there are 250 more girls than boys, how many boys were at the concert?

**Math**

jack was one third as young as her grandmother 15 years ago if the sum of their ages is now 110 how old is jacqueline grandmother

**Monatomic ion Oxygen**

the formation of which monatomic ion oxygen is the most energetically favorable

**Economics**

The key feature of a market system is A. competition. B. profit. C. demand. D. supply.

**Physics**

Two Train whistles, A and B each have a frequency of 408Hz. A is stationary and B is moving toward the right (away from A) at a speed of 35.0m/s. A listener is between the two whistles and is moving toward the right at a speed of 15.0m/s. What is the frequency from A and B as ...

**Philosphy**

Mrs. Orlof teaches two history classes, one in the morning and one in the afternoon. Yesterday she gave the same test to both classes. Anyone who failed the test must take a retest. Since a greater percentage of students who took the morning test failed the test than students ...

**Physics**

A body moving with uniform acceleration has a velocity of 11.1 cm/s when its x coordinate is 4.6 cm. If its x coordinate 1.75 s later is −4.29 cm, what is the x-component of its acceleration? Answer in units of cm/s2. How would I set this up?

**Physics**

A young woman named Kathy Kool buys a sports car that can accelerate at the rate of 5.14 m/s 2 . She decides to test the car by drag racing with another speedster, Stan Speedy. Both start from rest, but experienced Stan leaves the starting line 0.78 s before Kathy. Stan moves ...

**Mathematics**

4,200,000

**calculus**

If f(3) =4 g(3)=2 f'(3)=6 and g'(3)=5 find the following number (f+g)' (3)

**chemistry**

is this set up correct? ln(760torr/23.8torr) = -delta Hvap/ 8.31447 (1/373K - 1/298K)

**chemistry**

so technically (P1, T1) is 25 °C 23.8 Torr and (P1, T2) is 100 °C is 760 Torr? Or is it the other way around? so what is R?

**chemistry**

what is the heat of vaporization if the vapor pressure of liquid water at 25 °C is 23.8 Torr and at a boiling point of 100 °C is 760 Torr.

**CHEMISTRY**

if a pure liquid in a sealed container is in equilibrium with its own vapor, the dependence of the vapor pressure on the temperature and the heat of vaporization is governed by the Clausius-Clapeyron equation. what is the heat of vaporization if the vapor pressure of liquid ...

**physics**

For a given velocity of projection in a projectile motion, the maximum horizontal distance is possible only at ө = 45°. Substantiate your answer with mathematical support. 20.5 m/s

**Finite Matematics**

The quantity demanded x each month of Russo Espresso Makers is 250 when the unit price p is $170; the quantity demanded each month is 1000 when the unit price is $140. The suppliers will market 750 espresso makers if the unit price is $90. At a unit price of $110, they are ...

**stat**

Assume that a population is normally distributed with a mean of 100 and a standard deviation of 15. Would it be unusual for the mean of a sample of 3 to be 115 or more? Why or why not?

**Biology**

1.The four rows of data below show the boiling points for a solution with no solute, sucrose (C12H22O11), sodium chloride (NaCl), and calcium chloride (CaCl2) (not in that order). Which boiling point corresponds to calcium chloride?

**geometry**

if AB=2PB, then P is the midpoint of AB

**Math**

Triangle GHI has i= 19 m, H=137 degrees, and I=51degrees. Find g. Happy Thanksgiving.

**math**

Thx :)

**math**

I have a question that says one rectangle has a 3x4 centimeter area. If I make another rectangle, what's the area if the scale factor is 4?

**consumer math**

Luis Giron works at the Pancake Palace from 3:00 p.m. until 12:15 a.m. 5 nights a week. If he takes a 30-minute break each evening, how many hours per week does he work? 46.25 hrs 44.75 hrs. 43.75 hrs.

**Spanish crossword**

in _________, school begins around March 1 and ends in December (2 words)

**chemistry**

How many moles are in 1,000,000,000 molecules of H2 02?

**unit rate**

6 eggs in 7 days

**business**

As an IHRM why would recruitment, selection and staffing be problematic.

**Calculus**

afdaf

**5th grade**

name each number in two different ways 90,000,000 40,000

**Geometry**

THANKS

**Geometry**

Is it always true, sometimes true, or never true that the circumcenter is outside its associated triangle? Is it sometime true?

**college**

LIST 5 TYPE OF CHEMICAL EXPLOSIONS

**math (unit rate)**

6 eggs in 7 days