# Posts by Ryan

Total # Posts: 1,325

**Pre-Calculus 12**

what do I do next?

**Pre-Calculus 12**

How do I solve the following question: sin(5x)cos(3x) - cos(5x)sin(3x) = 1 So far I got this: sin (8x) = 1 Please help

**Physics**

The spring of a spring gun is compressed a distance (d) of 3.2 cm from its relaxed state, and a ball of mass m = 12 g is put in the barrel. With what speed will the ball leave the barrel once the gun is fired? The spring constant is 7.5 N/cm. Assume no friction and a ...

**Physics**

Two metal sphere, suspended by vertical cords, initially touch. Sphere 1, with mass 30 g is pulled to the left to a height 8.0 cm and then released. After swinging down, it undergoes and elastic collision with sphere 2 whose mass is 75 g. a) What is the velocity of the sphere ...

**physics**

Two skaters collide an embrace, in a completely inelastic collision. That is, they stick together after impact. The origin is placed at the point of collision. Alfred, whose mass is 83 kg, is originally moving east with speed 6.2 km/h. Barbara, whose mass is 55 kg, is ...

**English**

Does does analogy make sense? being is a good student is similar to a multilayered cake. There are several different factors or ingredients that effect the final outcome.

**English**

could u help me finish this sentence please. Enjoying to learn creates an atmosphere where students..

**English**

a good student requires three essential characteristics; they must have a positive attitude towards learning, are willing to make mistakes, and possess good work habits. I would like a couple paragraph idea starters

**Spanish**

In this unit, you learned about several states that border Mexico. Write a short paragraph that describes at least two similarities and two differences between those states

**Calculus**

I really don't get this question :( What is 2+2? a. 3 b. 7 c. 4 d. -4 I really need help!!!

**ALGEBRA**

A rectangular room is 1.2 times as long as it is wide, and its perimeter is 25 meters. Find the dimension of the room rounded to the nearest tenth. The length is: The Width is:

**Precal 12**

What is the value of k in the function f(x) = (2-k)/(5x+k) if its graph passes through the point (3, -2/19) A. -19/2 B. 4 C. -10 D. No such k exists I think its D, but I am not sure. Please help quickly.

**Pre-Calculus 12**

Thanks

**Pre-Calculus 12**

how to solve 3^(x-2) = 5^x

**Precal12**

Thanks!!

**Precal12**

If (n+1)C(n-1) = 28, find the value of n C stands for Combinations

**precalc 12**

Imagine that you have ten small light bulbs, of which three are burned out a) in how many ways can you randomly select 4 of the light bulb b) in how many ways can you select two good light bulbs and two burned out light bulbs? Hel needed Urgently

**Social Studies**

Uh... some of those links you posted are really sketchy, Ms. Sue. There is one about cross dressing and drag queen lifestyle. I can't write a class paper on that kind of stuff!

**Social Studies**

I know how to use Google. That is not helpful. Who was our first Transgender president?

**Social Studies**

I need to write a paper on a transgender role model. It can be someone in the field of art, science, math, or business leadership. Any suggestions?

**Physics 11**

I cannot paste the link to the image.

**Physics 11**

The diagram shows a collision between a 4.0 kg toy car and a stationary 8.0 kg toy truck. After the collision, the car bounces back at 1.0 m/s while the truck goes forward at 2.0 m/s. Based on these values, are momentum and kinetic energy conserved? Image at bottom of the page...

**Physics 11**

A 15 kg block is sitting on a level surface. The coefficient of friction between the block and the surface is 0.32. A horizontal force of 25 N is then applied to the block. What is the acceleration of the block while the horizontal force is being applied?

**Physics 11**

A 15 kg block i

**Physics 11**

Thanks

**Physics 11**

A 4.00 kg block is accelerated along a level surface at 3.00 m/s^2. The applied force is 20.0 N. What is the coefficient of friction between the block and the surface?

**Physics !! Help Needed UrGeNtLy!!**

A toddler applies a 25.0 N force to a chair over a distance of 2.5 m, the chair is being pushed across a smooth floor against a force of friction (10.0 N resistance). How much work is being done?

**Chemistry**

10*=? There is not enough information for me to solve, but you can use this formula to solve. mass(1.00x10*kg) / molar mass of (NH4)2SO4 x molar mass of NH3

**Grade 12 Trigonometry**

a) cos(a)cos(b) + sin(a)sin(b) find sin ratio: use pythagorus (5^2) - (-3^2) = #. Sin = y/r = #/r. then solve a)

**Physics**

The answer says 62 J not 25

**Physics**

A toddler applies a 25.0 N force to a chair over a distance of 2.5 m, the chair is being pushed across a smooth floor against a force of friction (10.0 N resistance). How much work is being done?

**Math **

A van leaves town x at 6:45am and travels towards town y ,400km away at an average speed of 80km/hr.At 8:00am a truck left y for x at an average speed of 60 km/hr.at what time will the two meet.

**Pre-Calculus 12**

Are there specific steps to graphing this equation or do you just plot points?

**Pre-Calculus 12**

I am refering to the question posted on Tuesday, June 6, 2017 at 8:26pm. "how to graph y= (x^2-3x-10)/(x-2)" This is the reply I got: Pre-Calculus 12 - Damon, Tuesday, June 6, 2017 at 9:21pm (x-5)(x+2)/(x-2) well we know it is 0 at x = 5 and at x = -2 and we know it ...

**Pre-Calculus 12**

I don't understand what you mean "it is 0 at x=5 and at x=-2"?

**Pre-Calculus 12**

how to graph y= (x^2-3x-10)/(x-2)

**Math**

Use the FOIL method Farthest: Multiply the 3b variables together. Outside: Multiply the outside 2 variables together. Inside: Multiply the inside 2 variables together. Left: Multiply the 2 variables on the left side toghether.

**Pre-Calculus 12**

Write the following expression as a single logarithm: 4 log 3 + 2

**algebra 1 **

find the sum: (-5) + (-5) + (+7) + (-2) please help its due tomorrow thanks

**algebra 1 **

tom has read 3/8 of the 480 pages in the book. how many pages are left to read? what is the ratio of pages read to pages not yet read? please help! due tomorrow

**algebra 1 **

how far will a migrating duck fly in 7 hours at the speed of 21 mph?

**algebra 1 **

the ratio of right handed to left handed students in the school was 3 to 14. if the total number in both categories was 714 how many right handed students were in the school? please help its due tomorrow! i totally forgot about the extra homework my teacher assigned.

**Chemistry**

Perpare 500ml of 1M HCl solution from a bottle of concentrated 37%(W/W) HCL stock with a density of 1.19g/ml. 37%= 37/100 x 100 therefore mass is 37g molarity = mol/vol 1= mol/0.5 mol=0.5 mass of Hcl needed = molxmr mass = 0.5 x 36.5 mass = 18.25g

**Physics**

What happens to a current-carrying wire that is located in a magnetic field? Does the orientation (angle) of the wire make a difference? Explain.

**Physics**

A wasp accumulates 1.0x10^-14C of charge while flying perpendicular to the earth's magnetic field of 4.0X10^-5T. How fast is the wasp flying if the magnetic force acting on it is 3.0x 10^-16N?

**Physics**

Evelyn wears glasses whose wire frames are shaped like to circles, each with an area of 8.0x10^-4 m^2. The horizontal component of the earths' magnetic field in Evelyn's hometown is 3.9x10^-5 T. If Evelyn turns her head back and forth, rotating it through 90degrees ...

**Math**

Ok 8 -8 and 4 - 8 then 4x = -4 Ok The answer is C thank you for the help!!

**Math**

That is not a answer choice though

**Math**

I need help solving the problem not the answer. (Multiple Choice) The steps below show the incomplete solution to find the value of x for the equation 7x + 8 ? 3x = ?6 + 10: Step 1: 7x + 8 ? 3x = ?6 + 10 Step 2: 7x + 8 ? 3x = 4 Step 3: 4x + 8 = 4 Which of these is most likely ...

**Math**

Just stop it Anonymous. The answer is 93939328247593821

**Mathematics**

The eighth term of an arithmetic series is twice the third term. The sum of the first eight terms are 39.Calculate the first term. Please help i've been stuck for hours on this question

**Maths**

The eighth term of an arithmetic series is twice the third term. The sum of the first eight terms are 39.Calculate the first term. Please help

**physics**

i got it bob thanks lol should be 490J!!

**physics**

122.5J ? when your saying work is equal to the PE gained. does that mean its 490j??

**physics**

so would it look like this 490= f x 2.0 245J ??

**physics**

a box with a mass of 25kg is lifted (without acceleration) through a height of 2.0m, in order to place it upon the shelf of a closet. The value of acceleration due to gravity g= 9.8ms^2 How much work is required to lift the box to this position? i figured out the potential ...

**english **

What are (desire lines) according to tim cresswell place?

**Vectors**

Write a second symmetric equation for the following line, given the point on the line A(0, 5, -1/2) (x-2)/4= (y-4)/-2 = z Would it not be x/4 = (x-5)/-2 = z+1/2

**Math**

How long will it take to fill 6 similar tanks completely with water? Give your answer in hours and minutes

**Trig**

It looks like a communication question

**Trig**

Let n be a fixed positive integer. Describe all solutions of sin(n theta) = 1/2 I know that the solutions would be (?/6)/n+(2?x)/n and (5?/6)/n+(2?x)/n ? How do I 'describe'

**Math**

Parallelogram ABCD is inscribed in a circle. Then, the measure of angle A must be 90?

**Math**

Julie has 8 more than three times as many quarters as dimes. The total value of the coins is $12.20. How many of each kind of coin does she have?

**Social Studies**

Dang if i knew this i would give u the anwsers

**math**

what is the strategy of 12 were bought by Logan 1/3 was choc.chip 1/3 was sugar 1/3 was peanut butter how many of each kind of cookie did logan buy

**math**

Alex Hurry Guys what strategy was used

**MATH**

Logan bought 12 cookies 1/3 was choc chip 1/3 was sugar and 1/3 was peanut butter How many of each kind of cookie did Logan buy

**Algebra**

The difference between 5 times a number and 20 equals the sum of the number and 40. Find the number

**Stoichiometry**

Suppose you wanted to add just enough 0.40M calcium chloride solution to 75.0mL of 0.60M of sodium carbonate solution for all of the sodium carbonate and calcium chloride to react. B) what mass of calcium carbonate would be produced (assuming a 100% yield)

**Stoichiometry**

B) what mass of calcium carbonate would be produced assuming a 100% yield?

**Stoichiometry**

Thanks

**Stoichiometry**

Suppose you wanted to add just enough 0.40M calcium chloride solution to 75.0mL of 0.60M of sodium carbonate solution for all of the sodium carbonate and calcium chloride to react. a) What volume of 0.40M calcium chloride solution would be required?

**Algebra 1 A**

$0.20x + $2.30y - $1.00z < $100

**Stoichiometry**

How do I find theoretical amount that should have formed or CaCl2?

**Stoichiometry**

It would be CaCl2

**Stoichiometry**

Which one is the limiting reactant if 0.0453 moles of sodium carbonate was used and 0.0216 moles of calcium choloride was used? Balanced Eq. Na2CO3 + CaCl2 = CaCO3 + 2NaCl

**Chemistry**

Carbohydrates (such as C6H12O6) undergo combustion with oxygen to produce carbon dioxide and water. Living things use this reaction (a process called respiration) to produce energy. Determine the mass of carbohydrates consumed for every 0.300 mol of oxygen gas consumed during ...

**Chemistry**

Carbohydrates (such as C6H12O6) undergo combustion with oxygen to produce carbon dioxide and water. Living things use this reaction (a process called respiration) to produce energy. Determine the mass of carbohydrates consumed for every 0.300 mol of oxygen gas consumed during ...

**Math**

50-p= Leonora score

**Chemistry**

I need help with this, but nobody has answered yet

**Chemistry**

Carbohydrates (such as C6H12O6) undergo combustion with oxygen to produce carbon dioxide and water. Living things use this reaction (a process called respiration) to produce energy. Determine the mass of carbohydrates consumed for every 0.300 mol of oxygen gas consumed during ...

**Physics**

A block that has a mass of 0.0190 kg and a block that has a mass of 2.00 kg are attached to the ends of a rope. A student holds the 2.00-kg block and lets the 0.0190-kg block hang below it; then he lets go. Air resistance can be neglected. 1)What is the tension in the rope ...

**Math**

A game is played using one dice. If the dice is rolled and shows 1, the player wins $1; if it shows 2, the player wins $2; if it shows a 3, the player wins $3. If the die shows 4,5,or 6 the player wins nothing. a.) If there is a charge of $1.25 to play the game, what is the ...

**English**

Which did Anton have more allegiance to: his caste of genetically enhanced beings or his brother?

**English**

Thanks

**English**

Why is the society in Gattaca so devoid of happiness, vitality and fun?

**Chemistry**

First you need to finish the equation. It is a combustion reaction and the formula for methane is CH4. Once you have balanced it you can use cross multiplication to find the answer.

**Biology**

Thanks

**Biology**

What are 2 advantages for binary fission in bacteria?

**chemistry**

Ok now you need to find the molar mass of the hydrate. Then you divide the hydrate by the molar mass which is 250.5g/mol

**Chemistry pH, acids, and bases**

Thanks!

**Chemistry pH, acids, and bases**

Trichloroacetic acid (CCl3CO2H) is a corrosive acid that is used to precipitate proteins. The pH of a 0.050 M solution of trichloroacetic acid is the same as the pH of a 0.040 M HClO4 solution. Calculate Ka for trichloroacetic acid. I just don't know where to start. How ...

**SS Checj My ANSWERS Please**

i like cats is right

**SS**

1. B

**Physics**

A 1200 kg car rounds a curve of radius 71 m banked at an angle of 11°. What is the magnitude of the friction force required for the car to travel at 82 km/h? My physics optional extra work: This would be helpful so I can compare the solutions here as I do the work by myself.

**Physics**

A 0.79 kg ball is connected by means of two ideal strings to a vertical, rotating rod. The strings are tied to the rod and are taut. The upper string is 29.0 cm long and has a tension of 29.7 N, and it makes an angle θ2 = 64.0° with the rod, while the lower string ...

**Physics**

The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. (a) Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed of a person situated at the equator. (b) What ...

**Physics**

The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. (a) Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed of a person situated at the equator. My ...

**Physics**

A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.70 × 104 m/s, and the radius of the orbit is 5.80 × 106 m. A second satellite also has a circular orbit around this same planet. The orbit of this second satellite has a ...