# Posts by Trevor

Total # Posts: 204

**Social studies**

Which of the following contributed to the collapsed of communism. In Europe

**Math algebra**

I need some help with this It is given that 2(3 + x) = 6 + 2x. This is an example of the ___________ property. A) associative B) commutative C) distributive D) identity plz type the answer asap like by 7:50 or else I'm a dead man.

**Math**

t/2+7=3t\4+9

**Math**

Which is greater the sets of (5-2) or two sets of(2+3) draw a diagram to support your conclusion

**math**

The second term of an arithmetic progression is 50 and the 5th term is 65.calculate the value of the 40th term

**Chemistry**

concentration of ammonium chloride produced when 21.0 mL of 11.9 M HCL and 18.0mL of 7.50M NH3 are mixed?

**Chemistry**

concentration of ammonium chloride produced when 21.0 mL of 11.9 M HCL and 18.0mL of 7.50M NH3 are mixed?

**Physics**

Idk

**Math**

Two students are playing a math game. The object of the game is to make the least possible number by arranging the given digits inside value bars on a card. In the first round, each player will use the digits 3, 5 and 7 to fill in the card. One student arranges the numbers on ...

**Algebra**

there are 24 candies in a box. there are 3 times as many candies with nuts as candies without nuts. how many candies with nuts are in the box

**Physics**

I know this is so simple but for some reason I am having a brain fart... A 20 C charge experiences a 2 N force in an electric field. What is the strength of the electric field? Please help and laugh later thank you lol

**Language Arts**

Thx hi i got 100%

**Physics**

Initial velocity is 21 m/s, the angle is 40 degrees, 20 meters away from the wall. How long is the ball in the air for?

**math**

A set is known to have 255 proper subsets. How many distinct elements does this set have?

**physics**

A 5 ft chain is sitting on a table with 2 ft hanging off (3 ft sitting on table). The table is 4 ft high, and the chain slides frictionless off the table. The chain weighs 15 lb. What is the velocity of the chain when it first hits the ground.

**Philosophy**

Sorry I didn't word my question properly. I understand that Kant believes a person must act on a principle that applies to all other rational beings. I'm confused on how his views that rational beings have dignity and are autonomous relate to his theory of categorical ...

**Philosophy**

Can someone please explain Immanuel Kant's view on ethics.

**life science**

Thy ar among the mst valueable sources of information about the earths history

**Physics**

How much work is done by the force F⃗ =(− 3.0 i^− 7.6 j^)N on a particle that moves through displacement Δr⃗ = 3.6 i^−2.0j^m?

**Physics**

A 50 g ball of clay traveling at speed v0 hits and sticks to a 1.0 kg block sitting at rest on a frictionless surface. A) What is the speed of the block after the collision? B) What percentage of the ball's initial energy is "lost"?

**Physics**

A) What is the kinetic energy of a 1200kg car traveling at a speed of 30 m/s (≈65mph)? B) From what height would the car have to be dropped to have this same amount of kinetic energy just before impact?

**Math**

I don't know can someone help me

**Physics**

A 96.0-g wooden block is initially at rest on a rough horizontal surface when a 11.4-g bullet is fired horizontally into (but does not go through) it. After the impact, the block–bullet combination slides 6.5 m before coming to rest. If the coefficient of kinetic friction...

**Math, HELP!**

Find the LCD: a) (12/55c^6) (4/11c^9) b) (9/4c+12) (5c/5c+10) c) (9x/x^2-4x+4) (5x/x^2-5x+6) d) (7/x) (3/42-7x) (x/x^2-36)

**Math**

what is the ratio of 4 engines to 18 box cars....trying to help my son in math???

**math**

x=2 m=21 w=-12

**Pre-Calculus**

A gardener has 72' of edging. She wants to use it to enclose a 125 square foot rectangular area; she does not have to use up all of the edging. What are the possible lengths that a side of the rectangle can have? Answer using interval notation. Hint: If the length of the ...

**social studies**

What is the total capacitance of capacitors connected in series, C1=444F, C2=621F

**Social Studies**

i am from connections academy and it is 1)c. 2)d. 3)d.

**Math**

You simply factor out a 2x to get: 2x(3x+7)

**Calculus**

When there is a negavtive exponent you need to flip the term to makee it positive so the problem should be written as: H(x)=(x^4-2x+7)[(1/x^3)+(2/x^4)] Then you simply multiply the two groups to get: H(x)=[(x^4-2x+7)/(x^3)]+[2(x^4-2x+7)/(x^4)] Then simplify the second fraction...

**Calc**

Possible derivation: d/dx(f(x)) = d/dx(log(x) csc(x)) The derivative of f(x) is f'(x): f'(x) = d/dx(log(x) csc(x)) Use the product rule, d/dx(u v) = v ( du)/( dx)+u ( dv)/( dx), where u =csc(x) and v = log(x): f'(x) = log(x) (d/dx(csc(x)))+csc(x) (d/dx(log(x))) The...

**Calculus**

I don't know if this is right because if you are using x for the distance the man is away from the light post then you cant set x equal to the rate at which the man is walking.

**Calculus**

A man is 6ft tall and is walking at night straight toward a lighted street lamp at a rate of 5 ft/sec. If the lamp is 20 ft above the ground, find the rate at which the length of his shadow is changing.

**Calculus**

Water is being poured into an inverted cone(vertex down) of radius 4 in and height 10 in at a rate of 3 in^3/sec. Find the rate at which the height of the water is increasing when the water is 5 in high.

**Calculus**

1a. 15 ft ladder is placed against a vertical wall. the bottom of the ladder is sliding away from the wall at a rate of 2 ft/sec. How fast is the top of the ladder sliding down the wall when the bottom of the ladder is 9 ft from the wall? 1b. Using the data in the first part, ...

**Calculus**

A 15 ft ladder is placed against a vertical wall. the bottom of the ladder is sliding away from the wall at a rate of 2 ft/sec. How fast is the top of the ladder sliding down the wall when the bottom of the ladder is 9 ft from the wall?

**Calculus**

If V volts are measured across a resistance of R ohms in a circuit carrying a current of I amperes, V=IR. At a certain instant, the voltage is 250 and is increasing at a rate of 4 volts/min, while the current is 0.5 AMP and is increasing at a rate of 0.01 amp/min. Find the ...

**Calculus**

Calculus If V volts are measured across a resistance of R ohms in a circuit carrying a current of I amperes, V=IR. At a certain instant, the voltage is 250 and is increasing at a rate of 4 volts/min, while the current is 0.5 AMP and is increasing at a rate of 0.01 amp/min. ...

**calculus**

Use logarithmic differentiation: F(x)= (3x+6)^4 (x^3 -2)^5 f'(x)=

**Math**

I mean 12 letters not 14. Sorry

**Math**

I'm doing a crossword and I need a word or words that equal 14. Does Factoredbase seem correct? That is the only thing I can come up with.

**Math**

The number in a power that is used as a factor is what?

**science**

a sphere of mass 500.0g is released from point A 5m above the ground and slides down to point B 3.2m through point C 2m in frictionless wire track. (1)determine the particle's speed at points B and C. (2)determine the net work done by the force of graviy in moving the ...

**Physics**

A 4.0 kg wheel of 20 cm radius of gyration is rotating at 360 rpm. The retarding frictional torque is .12 N.m. Compute the time it will take the wheel to coast to a rest.

**Physics**

A 4.0 kg wheel of 20 cm radius of gyration is rotating at 360 rpm. The retarding frictional torque is .12 N.m. Compute the time it will take the wheel to coast to a rest.

**Chem help please**

A solution is found to contain 1 x 10-4 OH− ions, determine the pH of this solution.

**GTA**

GTA V came out no one wants to answer

**Math**

What inequality will equal -2 and 8?

**statistics**

Consider the following types of data that were obtained from a random sample of 49 credit card accounts. Identify all the averages that can be used to summarize the data.(Select all that apply) 1.Outstanding balance on each account: mode,median,mean?

**Math**

For what value of k does the equation x2 + k = kx – 8 have: Two distinct real roots One real root No real root

**science**

Did you ever finding out the answer? I need it?

**math**

A water skiing instructor recommends that a boat pulling a beginning skier have a speed less than 18 miles per hour. Write and solve an inequality that you can use to find the possible distances d (in miles) that a beginner can travel in 45 minutes of practice time

**Chemistry**

That answer is right

**english**

what is the historical allusion?

**Math**

Write the term of the binomial series. Simplify. a. The term with b^5 in (a-b)^9 b. The seventh term of (x^1/2 + x^-1/2)^8

**Geometry**

if a person 5 feet tall casts a 3 foot shadow and a building casts a 12 foot shadow, what is the height of building in feet?

**Internal and external Tratis**

Internal and external Tratis of any charter u can think of? Please help me. Your help is needed...

**Internal and external Tratis**

Internal and external Tratis of any charter u can think of? Please help me. Your help is needed...

**math**

for the following population of n=9 scores below. 11 12 16 15 19 16 13 17 11 range........ variance standard deviation s:

**Math**

if h(t) = 17.4 * 1.23^t, find t when z(t) = 144

**math**

6.4 - Y = 6 2/5 What is Y

**Magnasium**

Mg

**Math**

Find the third angle of aright angle if one of the angles measures 24 degrees

**Math**

Find the third angle of aright angle if one of the angles measures 24 degrees

**physics**

2.1

**physics**

2.1m

**MATH (PLease HELp)**

Nickels = x Quarters = 3x Dimes = 3x-1 Plug in equation with coin values in ()... (5)x + (25)3x + (10)3x-1 = 430 5x + 75x + 30x - 10 = 430 80x + 30x - 10 = 430 110x -10 = 430 110x -10 +10 = 430 + 10 110x = 440 x = 4 Nickels = 4 (x) Quarters = 12 (3x) Dimes = 11 (3x-1) 4x5=20 N...

**Science**

Are floods both constuctive and destructive?

**math**

Thank you very much :)

**math**

comparing 1,272 and 1,269. Do you need to cmpare the ones digits? Which number would be the farther to the right on the number line and why?

**math**

How to write 3.100 in word form

**algerbra**

point b is the midpoint of ac. what is the value of a? c(-3a,6/7a)

**math**

how to write 12.37 as a mixed number

**Biology**

It does not involve incest.

**Math**

The woodpecker found 3069 bugs in a tree and ate two thirds of them.How many bugs were left in the tree?Draw a picture to illustrate the problem.

**maths**

The method for completing the square can be used to write the expression -2x^2+12x-5 in the form a(x+b)^2 +c, where a,b, and c are constants. What is the value of c? Thank you for any help.

**Physics**

You didn't convert cm to m

**MATH**

Thank you, that's what my dad said but I didn't believe him :)

**MATH**

A paper is 28cm long, how many meters is this?

**history**

Im having trouble understanding the question let alone answering it.

**history**

Im having trouble understanding the question and the answer to it.

**history**

To what extent and in what ways did the great depression and the new deal alter americans perception of the legitimate role of government in the economic and social life of the united states?

**Physics**

A block of mass m is placed in a smooth-bored spring gun at the bottom of the incline so that it compresses the spring by an amount x_c. The spring has spring constant k. The incline makes an angle theta with the horizontal and the coefficient of kinetic friction between the ...

**Physics**

In a "worst-case" design scenario, a 2000-{\rm kg} elevator with broken cables is falling at 4.00 {\rm m/s} when it first contacts a cushioning spring at the bottom of the shaft. The spring is supposed to stop the elevator, compressing 2.00 {\rm m} as it does so. ...

**math**

thank you very much!

**math**

half of a gallon is a half gallon. half of a half gallon is a quart. half of a quart is a pint. half of a pint is a cup. a cup is what fraction of a quart? Is the answer 1/4?

**3rd grade math - arrays**

Mary says that the greater number of counters, the greater the number of different arrays you can form. Give an example that shows that Mary is wrong.

**math**

one fourth of the students earned A's. There were 280 students. How many earned A's? I got 70 for the answer but what is the percentage for that? Would it be 70%?

**math/science**

48 sec

**math**

duh, so easy I should have known that, thank you very much

**math**

a boy travels 20 km north, then 15 km south, how far is he from where he started?

**Organic Chemistry**

Write the mechanism for the reactions of: • (Z)-3,6-diethyl-oct-4-ene and bromine • (E)-3,6-diethyl-oct-4-ene and bromine Assign the R/S configuration for each of the products and determine the stereochemical relationship of each set of products.

**Calculus**

Use implicit differentiation to find the slope of the tangent line to the curve –2x^2–2xy–1y^3=–3 at the point (–1–1).

**Physics**

1.) ((m*v^2)/r1)+ma

**Physics**

Ironman steps from the top of a tall building. He falls freely from rest to the ground a distance of h. He falls a distance of h/ 3 in the last interval of time of 1.1 s of his fall. Hint: First, compute the velocity when Ironman reaches the height equal to the distance fallen...

**Calculus**

If f(x) = 2 √x, use the definition of derivative to find f′( x )

**Calculus**

Anyone?

**Calculus**

(1 pt) If f(x) = 2 √x, use the definition of derivative to find f′( x ).

**Calculus**

If 12x − 52 ≤ f(x) ≤ x2 + 4x − 36 determine lim x→ 4 f(x) = What theorem did you use to arrive at your answer?