# Posts by anon

Total # Posts: 2,758

**Calc**

Evaluate the integral by reversing the order of integration.(2 integrals) 0 to 4 5ex2 dx dy 3y to 12

**Calculus**

Find the volume of the solid under the plane 3x + 3y − z = 0 and above the region bounded by y = x and y = x^4

**Calculus**

Find the volume of the given solid. Under the surface z = 7xy and above the triangle with vertices (1, 1), (4, 1), and (1, 2)

**HELP ME PLEASE I NEED HELP history**

Why did Congress decide the election of 1800? Select two a. based on the outcome, it was mandated by the us consitutuion *** b. the popular vote was a tie c. no candidate won the electoral vote d: not enough citizens voted to determine the outcome ***

**Physics (PLEASE HELP PRONTO)**

A cart with a mass of 5.35 kg is placed on a frictionless ramp at an angle of 14.2. The cart is released and rolls down the ramp. Find the acceleration.

**C++**

It won't compile because it's saying the second "else if" isn't valid. I have tried changing things around and the best I can get is when I enter a value starting with"A" it returns nothing and a value starting with "B" returns and ...

**C++**

I am trying to create a program that displays shipping charges for two region codes. The region code has to have exactly 3 characters (the letter A or B followed by two numbers). Display a message if invalid region code is entered. use a sentinel value to exit program. ...

**science**

we need to see the answers

**art**

Please link the art or I cannot help you.

**Social Studies**

Were these answers right????

**Health**

Lyssey likes to bully others here and she is wrong. Your answers aren't all wrong.

**Math**

thank you so much!

**Math**

oh wait!! is it 9?!

**Math**

[(8^2 - 4) - 6] / 6 = ?? i think it's 59?? idk what the brackets mean. can someone PLEASE explain this to me???

**Physics**

A 300kg bobsled starts down an icy slope inclined at 12 degrees. There is some friction between the bobsled and the slope. If the hill is 200m long, how long does it take for the sled to reach the bottom?

**Physics**

A 300kg bobsled starts down an icy slope inclined at 12 degrees. There is some friction between the bobsled and the slope. Write the equations of motion in the two directions where the x axis is along the hillside.

**English**

yea i need help on this too someone help

**American Government**

can confirm, it is C

**Social Studies**

what was the flaw in the act passed by congress that established a tax on whiskey? a. it rewarded farmers who grew corn b. it did not spread the tax burden evenly** c. it was similar to taxes britan had proposed d. it had to be collected in person by tax collectors

**world history**

omg 100%

**Math please help!!!**

Julia is allowed to watch no more than 5 hours of television a week. So far this week, she has watched 1.5 hours. Write and solve an inequality to show how many hours of television Julia can still watch this week.

**american Government**

I swear Ms.Sue is Ms. Scott.. lol

**check my work**

100% correct :)

**check my work**

1. B 2. A 3. C 3/3 100%

**math**

x^3-(p+q-r)x^2+(pq-pr-qr)x+pqr How to factor this??

**physics**

Answer to my own question, you use d=vi*t+1/2*a*t^2 after solving for t you use d=vxo*t

**physics**

A pitcher throws a baseball horizontally from the mound to home plate. The ball falls 0.868 m (2.85 ft) by the time it reaches home plate 18.3 m (60 ft) away. How fast was the pitcher's pitch?

**american goverment check answers**

Anonymous is 100% right

**american goverment check answers**

100% correct. ^ Thanks.

**Math**

I came up with a different example, Jack wants to buy 4 pumpkins, but he needs to know how much the pumpkins cost so he doesn't spend more than $25. 4p ≤ 25 4p/2 ≤ 25/4 p=6.25 p ≤ $6.25 is this right?

**Math**

Give a real-world scenario in which you would write an inequality rather than an equation. I was thinking, Jack has to bring at least $25 to a carnival. So the inequality would be x ≥ 25? or could you help me with a different example?

**American Government**

tj is correct

**Math 2**

Whats the question?

**Algebra 2**

Thank you!!!

**Algebra 2**

How did you get x^3/5?

**Algebra 2**

Thank you so much. I understand it now!!

**Algebra 2**

1. Convert the 5th root of x^3 into a rational expression. 2. Solve i^63 I don't know how to solve these so please help me!!!

**Science**

What is the question asking?

**Biology**

What are your answers?

**Maths**

BECAUSE NO ONE IS ANSWERING MY QUESTION. Im so sorry. I really need your help guys.

**Maths**

Plastic drinking straws are manufactured to fit into drinks cartons which have a hole in the top. A straw fits into the hole if the diameter of the straw is less than 3 mm. The diameters of the straws have a normal distribution with mean 2.6 mm and standard deviation 0.25 mm...

**Math**

I just wanna try. If me, I do it like this, 35/(35+72) X 100% = 32.7%

**Calculus**

Find the velocity and position vectors of a particle that has the given acceleration and the given initial velocity and position. a(t) = 2 i + 6t j + 12t2 k, v(0) = i, r(0) = 2 j − 7 k

**Calculus**

Find the tangential and normal components of the acceleration vector. r(t) = t i + t2 j + 4t k aT= aN=

**Government**

OCA was correct, but 4 is actually B, Separation of powers, got 9/10 thanks!

**Calculus**

The curves r1(t) = 5t, t^2, t^4 & r2(t) =sin t, sin 4t, 3t intersect at the origin. Find their angle of intersection, θ, correct to the nearest degree.

**Calculus**

Find parametric equations for the tangent line to the curve with the given parametric equations at the specified point. x = 5 ln t, y = 8sqrt(t), z = t^5 (0,8,1) (x(t),y(t),z(t))=( )

**Maths**

A curve is such that dy/dx = 2- 8(3x+4)^-1/2 - A point P moves along the curve in such a way that the x-coordinates is increasing at a constant rate of 0.3 units per second. Find the rate of change of the y-coordinates as P crosses at the y-axis.

**Calculus**

a) Find parametric equations for the line through (4, 1, 4) that is perpendicular to the plane x − y + 2z = 7. (Use the parameter t.) b) In what points does this line intersect the coordinate planes? xy-plane? yz-plane? xz-plane?

**Calculus**

Consider the following planes. 5x − 4y + z = 1, 4x + y − 5z = 5 a) Find parametric equations for the line of intersection of the planes. b) Find the angle between the planes

**Calculus**

Find (a cross b)dot product a? & Find the cross product(a × b) dot product b? a = 1, 1, −1 b = 4, 8, 10

**Calculus**

I can not seem to get this right Find an equation of a sphere if one of its diameters has endpoints (5, 5, 5) and (7, 7, 7).

**Calculus**

Just needed a refresher. Thanks.

**Calculus**

Write the equation of the sphere in standard form. x2 + y2 + z2 + 4x − 2y − 2z = 19

**Calculus**

Find, correct to the nearest degree, the three angles of the triangle with the given vertices. A(0, 1, 3), B(-2, 4, 5), C(1, 4, -3), ∠CAB = ° ∠ABC = ° ∠BCA = °

**Chemistry**

How many electrons in CH3NH3+ ?

**Chemistry**

thanks guys!

**Chemistry**

Dissolved 0.7500 g calcium chloride dihydrate and impure, in distilled water and the volume was elevated to 200.00 mL in a volumetric flask. A rate of 10.00 mL of the same consumed the titration 18.9 mL 0.0125 M EDTA using CALCON as indicator. What is the purity of the salt...

**biology**

Helper is correct.

**American Government**

Becky2theg is correct (I only say her because she cited the questions as well as the answers)

**American Government**

It is C

**Chemistry**

What is the oxidation state of Cr in K2Cr2O4?

**check my work**

Just took this -- 100% 1-B 2-D 3-B 4-C

**Chemistry**

How do you calculate alkalinity in chemistry? Ex: List the values for total alkalinity for Sample A and Sample B A 104 drops of titrant (5.25mL) 3 drops of C20 H14 O4 B 81 drops of titrant (4.25mL) 3 drops od C20 H14 O4

**Math**

Update #2: I've figured it out! You're supposed to multiply the answer from part a with whatever the n value is (in this case it's 16 because 8x2), and then you add the down payment. Thanks to anyone who considered this question! Haha

**Math**

Update: I've got parts a and c correct! But I'm still having difficulty with part b - I multiplied the answer from part a with the number of years and then added the down payment, but that isn't correct. I'm not really sure what I'm doing wrong.

**Math**

A man buys a house for $310,000. He makes a $150,000 down payment and amortizes the rest of the debt with semiannual payments over the next 8 years. The interest rate on the debt is 11%, compounded semiannually. (a) Find the size of each payment. (b) Find the total amount paid...

**Math**

A $20,000 loan is to be amortized for 10 years with quarterly payments of $763.55. If the interest rate is 9%, compounded quarterly, what is the unpaid balance immediately after the sixth payment?

**Math**

Suppose an individual makes an initial investment of $1100 in an account that earns 7.3%, compounded monthly, and makes additional contributions of $100 at the end of each month for a period of 12 years. After these 12 years, this individual wants to make withdrawals at the ...

**Math**

Suppose you are offered a job with a relatively low starting salary but with a $2000 raise for each of the next 9 years. How much more than your starting salary would you be making in the ninth year?

**Math**

A student has a savings account earning 6% simple interest. She must pay $1650 for first-semester tuition by September 1 and $1650 for second-semester tuition by January 1. How much must she earn in the summer (by September 1) in order to pay the first-semester bill on time ...

**Math**

(a) To buy a Treasury bill (T-bill) that matures to $10,000 in 12 months, you must pay $9700. What rate does this earn? (b) If the bank charges a fee of $20 to buy a T-bill, what is the actual interest rate you earn?

**Calculus**

Does the series converge? diverge? Use the Root test ((1/n)-(1/n^2))^n

**MATH**

Does the series converge or diverge? Use the Root test ((1/n)-(1/n^2))^n

**math**

Does the series converge or diverge? Use the Root test ((1/n)-(1/n^2))^n

**math**

Does the series converge? Explain please 1/(ln 2)^n from n=1 to infinity

**Math**

Does the series converge or diverge (-1)^n * 4n^3 _______________(fraction) n^4 + 1 from n=1 to infinity

**math**

does an=(-1)^n converge? Explain

**MATH**

Does the series converge or diverge? Use the comparison test. Thank you ((1/n)-(1/n^2))^n

**MATH**

Series converges? or diverges? Which test? explain? (n^10) * (3^n) ------------(fraction) (4^n) from n=1 to infinity

**MATH**

Sum? from n=3 to infinity ((2)/(n+1)-(2)/(n+3))

**MATH**

Series converges? or diverges? Which test? explain? (-1)^n * (4n^3) ------------(fraction) (n^4) + 1

**Math**

Is the following series convergent? explain ((2n)!)/((n!)(4^n))

**MATH**

Does the sequence converge? Work out a=-1^n

**math**

10th floor

**MATH**

Solve the integral using trig substitution (1/((x)(x^2+1)))dx

**MATH**

Integrate 1/(x(x^2+1)) dx using trig substitution

**Math**

Evaluate the integral using u substitution ((y^3)/((1-y^2)^2))dy

**Calculus**

A tank in the shape of a right circular cylinder is filled with water (62.5 lb/ft3). It has a height of 8 ft and a diameter of 10 ft. How much work is required to pump all the water to a spout that is 3 ft above the top of the tank?

**calculus**

A tank in the shape of a right circular cylinder is filled with water (62.5 lb/ft3). It has a height of 8 ft and a diameter of 10 ft. How much work is required to pump all the water to a spout that is 3 ft above the top of the tank?

**calculus**

A region is bounded by y=2x and y=4sqrt(x). Find the volume when rotated along 1)y=-1 2)the y axis

**math**

The region in the first quadrant bounded by the 𝑦-axis and the curve 𝑥 = 2𝑦2 − 𝑦3 (graph please) is revolved about the 𝑥-axis. Find the volume?

**Calculus**

A tank in the shape of a right circular cylinder is filled with water (62.5 lb/ft3). It has a height of 8 ft and a diameter of 10 ft. How much work is required to pump all the water to a spout that is 3 ft above the top of the tank?

**Economics**

hey writeacher, you will really get from me one day. You are acting over smart. I will smack you.

**math**

What is the height of a cylinder with a volume of 384π cubic inches and a radius of 8 inches? Round to the nearest tenth of an inch.

**Physics**

A guitar string is 108 cm long and has a mass of 2.90 g. From the bridge to the support post (L) is 70 cm, and the string is under a tension of 470 N. What is the frequency of the first overtone? Only 1 try left please help.

**Physics**

Two identical loudspeakers are some distance apart. A person stands 5.70 m from one speaker and 3.00 m from the other. What is the second lowest frequency at which constructive interference will occur at this point? The speed of sound in air is 343m/s. only 1 try left please ...

**MATH HELP**

A bus leaves a station at 10am and averages 60 mph. Another bus, traveling at 75 mph, leaves the same station 30 mins later following the same route. What time does the second bus catch up with the first bus? I don't know how to work this out at all!

**Math**

Make four 8s equal 8

**Maths**

At 3 pm ship A is 20 nautical miles south west of ship B. Assuming that the y- direction is north and the x-direction is east, the velocities of ships A and B can be expressed in knots in vector form as Va=(12,+5) Vb=(-8,-9) (i) Find the velocity of ship B relative to ship A