# Posts by ash

Total # Posts: 556

**Chemistry**

15.8 grams of potassium chlorate is decompossed and the gas is colected over water at 29 degrees celcius when water vapor pressure is 30 mmHg. Assuming 100% yeild of products, what is the total pressure in the vessel after the reaction in complete?

**Chemistry**

(2*-393.5+4*-242)-(2*-293+0) Delta H+ -1169 kJ/mol

**chemistry**

4.5

**Math-Quartic Equation**

Reduce this equation using the quadratic formula, factoring, or other algebraic method to determine the other zeros of the function. F(x)= 4x^4 - x^3 - 11x^2 -2x +6

**world history**

Which of the following provides the most significant contrast to the feelings of the detained Chinese immigrants at the Angel Island Immigration Center in California? A.The feelings of the Chinese immigrants at Ellis Island. B.The feelings of the Europeans immigrants at Ellis ...

**Physics**

20.5 m/s

**algebra**

A train leaves the station at 9:00 pm traveling east at 36 miles per hour. A second train leaves the station at 10:00 pm traveling west at 42 miles per hour. At what time will both trains have traveled the same distance? I need help solving it :)

**math**

A train leaves the station at 9:00 pm traveling east at 36 miles per hour. A second train leaves the station at 10:00 pm traveling west at 42 miles per hour. At what time will both trains have traveled the same distance? I need help solving it :)

**science**

Sediment can be directly turned into which of these types of rock? Select all that apply. A. igneous B. sedimentary C. metamorphic i think its all of them correct?

**science**

What is the relationship between a mineral and a rock? A.They are the exact same thing. B.A mineral is a building block of rocks. C.Minerals are only silicates while rocks are nonsilicates. D.A rock is always man-made while a mineral is naturally occurring. I think the answer...

**math**

An art collector buys 6 pieces a year for y years before donating 27 pieces to a museum. Which algebraic expression represents the number of pieces the collector still has in her possession? would the answer be 6y - 27?

**math**

A miniature-doll collector has a total of 254 unique dolls. The collector can afford to add 3 unique dolls a week to the collection. Which algebraic expression represents the number of unique pieces the collector has at the end of w weeks? would the answer be 254+3w?

**math**

Felipe has saved $625. He is starting a part-time job that pays him $150 a week, and he plans to save all of the money he earns. Which algebraic expression represents Felipe's total savings after x weeks? A.625x + 125 B.775x C.150x + 625 D.125x - 650 is it c?

**math**

okay. I think the answer is b?

**math**

A cell phone company charges each customer a base rate of $15.00 per month for its services. The company also charges each customer $0.02 per minute used. Which algebraic expression represents each customer's monthly charge for m minutes? A.15 (0.02m) B.15 + 0.02m C.15m...

**math**

I believe it is c?

**math**

Felipe has saved $625. He is starting a part-time job that pays him $150 a week, and he plans to save all of the money he earns. Which algebraic expression represents Felipe's total savings after x weeks? A.625x + 125 B.775x C.150x + 625 D.125x - 650

**math**

Before she went to the grocery store, Jana had 4 tomatoes in her refrigerator. For the next 3 weeks she buys n number of tomatoes each week. Which algebraic expression represents how many tomatoes she has at the end of three weeks? A. 4 − 3n B. 4 + 3n C. 3n − 4 D.

**Math**

According to math teachers what did the acorn say when it grew up

**physics**

from equation t equal to root x+3 find velocity and acceleration t equal to 1second

**physics**

from equation t equal to root x+3 find velocity and acceleration t equal to 1second

**physics**

a balloon is moving upwards with speed of 5m per second .when it is at height 98 m.a packet dropped from it .what velocity of packet when it strikes the ground

**math**

1225

**chemistry**

check the mole quickly

**sugarhill**

i need help with this problem 6/13 devided by 4/39

**3rd grade Math**

I meant 18

**3rd grade Math**

6x10=60 78-60=18 so the answer is 19

**math**

75% of 328 questions So. 75/100×328 = 246 questions ans.

**Social Studies**

women got to vote

**ap stats**

all students in a pe class completed a basketball free throw shooting event and the highest number of shots made was 32. the next day a student who had transferred into the school completed the event, making 35 shots. indicate whether adding the new student's score to the ...

**ap stats**

all students in a pe class completed a basketball free throw shooting event and the highest number of shots made was 32. the next day a student who had transferred into the school completed the event, making 35 shots. indicate whether adding the new student's score to the ...

**algebra college**

find the remaining zeros of f. degree 4 zeros i, -18+i enter the remaining zeros of f please help me out!

**college algebra**

form a polynomial f(x) with real coefficients having the given degree and zeros degree 4 zeros 5+3i;3 multiplicity 2 enter the polynomial f(x)=a?()

**algebra**

so i am right? x and y? x=-2.344 y=10.186 it was continuous, but they wanted it rounded to three decimal places

**algebra**

i changed it too f(1.9)= 10.186 f(1.5)= -2.344

**algebra**

use the intermediate value theorem to show the polynominal function has a zero in the given interval f(x)=x^5-x^4+3x^3-2x^2-11x+6; [1.5,1.9] x= -2.33 y=10.19 after i plugged in the 1.5 and 1.9 i just want to know if my x and y are correct

**trig**

given cot-A square root of 5, find cot-B at the 4th quadrant.

**calculus**

An airplane's velocity with respect to the air is 580 miles per hour, and its bearing is 332 degrees. The wind, at the altitude of the plane, is from the SW and has a velocity of 60 mph. What is the true direction of the plane, and what is the speed with respect to the ...

**geology**

during glacier ice ages, sea level rises or falls?

**calculus**

A plane flies 810 miles from A to B with a bearing of 75 degrees. Then it flies 648 miles from B to C with a bearing of 32 degrees. Find the straightline distance from and bearing from C to A.

**calculus**

A pole at a right angle to the horizontal is located on a slope that makes an angle of 12 degrees with the horizontal. The pole's shadow is 16 meters long and points up the slope. The angle of elevation from the tip of the shadow to the sun is 20 degrees. What is the ...

**calculus**

Verify the identity: (tanx+1)/(secx+cscx) = sinx

**Geometry**

X=10

**Chemistry**

Never mind I got it, just divide by the other ml amount :)

**Chemistry**

Sorry the question is What is the molarity of this AgNO3(aq)?

**Chemistry**

A 25.00 mL sample of a clear saturated solution of PbI2 requires 14.3 mL of a certain AgNO3(aq) for its titration. I^-(from satd PbI2)+ Ag^+(from AgNO3)= AgI(s) So, this is where I am. using the Ksp equation for PbI2: 7.1*10^-9=4x^3 solving for x gives me 0.00121 Giving the ...

**accounting**

1950

**geometry**

a school playground is in the shape of a rectangle 500 feet long and a 100 feet wide if fencing cost 15 dollars per yard what will the cost be to place fencing around the playground ?

**physics**

a bus is moving downhill at a slope of 5 degree . at the moment when the speed of the bus is 30km/h,the driver spots a deer 30m ahead. he applies the brakes and comes to a stop. the is paralysed by fear and does not move.will the bus stops before reaching it or will it hit the...

**physics**

a plane is flying with a constant speed along a straight line at an angle 60degree with the horizontal. the weight(W) of the plane is 90,000N and its engine provides a thrust(T)of 120,000N in the direction of flight . two additional forces are exerted on the plane :the lift ...

**physics**

an airplane has a speed of 600km/h with respect to air. it has to fly a distance of 800km northward. in what direction should it fly if a steady wind is blowing at a speed of 120km/h from the west ? what will its speed with respect to the ground be? draw the relevant diagram ...

**chemistry**

How many grams of mercury are formed from 47.0 of HgO? How many grams of oxygen are formed from 47.0 of HgO? How many grams of HgO would you need to obtain 34.1 of O2?

**chemistry**

What mass of oxygen is needed for the complete combustion of 2.50×10−3 of methane?

**chemistry**

What mass of water is produced from the complete combustion of 2.50×10−3 of methane?

**chemistry**

What mass of carbon dioxide is produced from the complete combustion of 2.50×10−3 of methane?

**chemistry**

A scientist wants to make a solution of tribasic sodium phosphate,Na3PO4 , for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 550 ml of a solution that has a concentration of Na+ ions of 1.40M ?

**Chemistry**

1.29g H2 is allowed to react with 10.3g N2 , producing 1.86g NH3. What is the theoretical yield for this reaction under the given conditions? What is the percent yield for this reaction under the given conditions? I have been stucks for days now.

**physics**

.789m/s^2

**Geometry**

Find the area of a regular pentagon with a side of 6ft. Give the answer to the nearest tenth. 123.9ft2 49.5ft2 61.9ft2 12.4ft2

**Geometry**

Find the surface area of a conical grain storage tank that has a height of 42 meters and a diameter of 20 meters. Round the answer to the nearest square meter. 3,028m2 3,971m2 1,357m2 1,671m2

**Geometry**

Find the surface area of a sphere with a circumference of 40 ft. Round to the nearest tenth.

**precalc help**

cos(15degrees) this is not plugging it in the calculator, please help me right down steps. i really need help.

**Geometry**

Cylinger A has a radius of 1 m and a height of 4 m. Cylinder B has a radius of 2 m and a height of 4 m. Find the ratio of the volume of cylinder A to the volume of cylinder B. 5:6 1:4 1:2 1:1

**Geometry**

Find the surface area of a conical grain storage tank that has a height of 42 meters and a diameter of 20 meters. Round the answer to the nearest square meter. 3,028m2 3,971m2 1,357m2 1,671ma

**Geometry**

The volume of a sphere is 2,098pi m3. What is the surface area of the sphere to the nearest tenth? 1,700 m2 146.2 m2 850 m2 26,364 m2

**Geometry**

Find the similarity ratio of a cube with a volume 512 m3 to a cube with volume 3,375 m3. 8 : 15 64 : 225 15 : 8 225 : 64

**Geometry**

What is the equation of the circle with center (2, –5) that passes through the point (–2, 10)? (x – 2)2 + (y – (–5))2 = 25 (x – (–2))2 + (y – 10)2 = 241 (x – 2)2 + (y – (–5))2 = 241 (x – (–2))2 + (y – 10)2...

**Geometry**

The length of the hypotenuse of a 30°-60°-90° triangle is 7. Find the perimeter. 7/2+21/2sqrt3 21+7sqrt3 7+21sqrt3 21/2+7/25sqrt3

**Geometry**

Thank you so much this was complicated

**Geometry**

Kristen lives directly east of the park. The football field is directly south of the park. The library sits on the line formed between Kristen’s home and the football field at the exact point where an altitude to the right triangle formed by her home, the park, and the ...

**Geometry**

A triangle has side lengths of 18 cm, 80 cm, and 81 cm. Classify it as acute, obtuse, or right.

**geometry**

The volume of a sphere is 2,098 m3. What is the surface area of the sphere to the nearest tenth? 1,700m2 146.2m2 850m2 26,364m2

**math**

a school playground is in the shape of a rectangle 700 feet long and 200 feet wide. if fencing cost 20 dollars per yards what will it cost to place fencing around the playground

**Physics**

(a) From ground, h=2.30m so: PE=mgh =1.70kgx9.8m/sx2.30m = 38.3J (b)The person is shorter than the distance at which he holds the book from the ground so: 2.30-1.60=0.7m Use the same formula, just substitute 0.7 in for h. (c)The work in this case is the potential energy of the...

**geometry**

The sides of a parallelogram are 25 cms and 15 cms.The height to the 25 cms side is 15 cms.What is the speciality of this parallelogram ?

**physics**

The drawing shows a boat being pulled by two locomotives through a canal of length 2.50 km. The tension in each cable is 5.00 103 N, and è = 19.0°. What is the net work done on the boat by the two locomotives?

**math**

there are seven pies if i take away 2 1.3 how many are left

**English**

those sentences seem great to me. With num 3 use (able). Try also to make your sentences as interesting as possible.

**Precal**

Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter DNE. Round your answers to one decimal place. Below, enter your answers so that A1 is smaller than A2.)

**Physics**

30.24m/s

**Intergrated Algebra**

I kinda forgot about radicals over the summer.What is Radical 79 over 3? How would you plot that?

**math**

54

**geometry**

find the value of x and bc if b is between c and d cb=4x-9 bd=3x+5 cd=17

**physics**

A 88-kg astronaut and a 1200-kg satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite, giving it a speed of 0.25m/s directly away from the shuttle. Seven-and-a-half seconds later the astronaut comes into contact with the shuttle.What was ...

**college algebra**

A musician is planning to market a CD. The fixed costs are $1260 and the variable costs are $5 per CD. The wholesale price of the CD will be $11. For the artist to make a profit, revenues must be greater than costs. How many CDs, x, must be sold for the musician to break even?

**college algebra**

find a general term for the sequence a1,a2,a3,a4..... 15,23,31,39

**college algebra**

(x^2/3)^7/2 simplify and express answer using positive exponents only

**college algebra**

solve x^2e^x+9x^ex=0

**college algebra**

e^-3-1x+22=0

**college algebra**

find all vertical and horizontal asymptoles f(x)=4x/x^+1

**college algebra**

the population of a certain geographic region is approximately 105 million and grows continuously at a relative growth rate of 1.53%. what will the population be in 5 years?

**college algebra**

how long would it take $3,100 to grow to $8,800 if the annual rate is 3.5% and interest is compounded monthly? please help

**Pre Cal**

the function y= tan (x/3) has an x intercept at?

**persuasive essay**

An easy way to answere this is to go on word prosser then go to tools and get on spelling and grammar it works great. ash

**algebra1**

(2x^2+3x-15) divided by (x-3)

**math**

a class consists of 14 men and 16 women. A group of 5 is randomly chosen a) the probability of this group containing at least 2 women and at least 2 men? b) probability the group contains the same gender.

**College Mathmatics**

Fill in the blank with the correct symbol to make the resulting inequality true. 4 4/3____ 4 1/2 A-> B-< C-< (with a line under it) D-> (with a line under it)

**College Mathmatics**

Thank u so much, this is the 1st lesson in this class, and my 1st math lesson in college period, and im 26, so im a little out of the loop and extremely confused when it comes to math. Thank u so much. Would u mind explaining it to me pls?!

**College Mathmatics**

Multiply; then reduce to lowest terms: 5 1/2 . 3/4

**differential calculus**

use the product rule to find the derivatives of the given function y=(3x^2-8)^2