Monday
September 26, 2016

Posts by ANON

Total # Posts: 2,354

math
x^3-(p+q-r)x^2+(pq-pr-qr)x+pqr How to factor this??
September 22, 2016

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
September 21, 2016

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?
September 21, 2016

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?
September 20, 2016

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?
September 20, 2016

Math 2
Whats the question?
September 19, 2016

Algebra 2
Thank you!!!
September 19, 2016

Algebra 2
How did you get x^3/5?
September 19, 2016

Algebra 2
Thank you so much. I understand it now!!
September 19, 2016

Algebra 2
1. Convert the 5th root of x^3 into a rational expression. 2. Solve i^63 I dont know how to solve these so please help me!!!
September 19, 2016

Science
What is the question asking?
September 19, 2016

Biology
What are your answers?
September 19, 2016

Maths
BECAUSE NO ONE IS ANSWERING MY QUESTION. Im so sorry. I really need your help guys.
September 13, 2016

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...
September 13, 2016

Math
I just wanna try. If me, I do it like this, 35/(35+72) X 100% = 32.7%
September 13, 2016

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
September 12, 2016

Calculus
Find the tangential and normal components of the acceleration vector. r(t) = t i + t2 j + 4t k aT= aN=
September 12, 2016

Government
OCA was correct, but 4 is actually B, Separation of powers, got 9/10 thanks!
September 12, 2016

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.
September 12, 2016

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))=( )
September 12, 2016

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.
September 10, 2016

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?
September 5, 2016

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
September 5, 2016

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
September 5, 2016

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).
September 5, 2016

Calculus
Just needed a refresher. Thanks.
September 4, 2016

Calculus
Write the equation of the sphere in standard form. x2 + y2 + z2 + 4x − 2y − 2z = 19
September 4, 2016

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 = °
September 4, 2016

Chemistry
How many electrons in CH3NH3+ ?
September 1, 2016

Chemistry
thanks guys!
September 1, 2016

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...
August 26, 2016

American Government
Becky2theg is correct (I only say her because she cited the questions as well as the answers)
August 21, 2016

American Government
It is C
August 21, 2016

Chemistry
What is the oxidation state of Cr in K2Cr2O4?
August 19, 2016

check my work
Just took this -- 100% 1-B 2-D 3-B 4-C
August 19, 2016

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
August 15, 2016

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
August 5, 2016

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.
August 5, 2016

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...
August 5, 2016

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?
August 5, 2016

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 ...
August 5, 2016

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?
August 5, 2016

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 ...
August 5, 2016

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?
August 5, 2016

Calculus
Does the series converge? diverge? Use the Root test ((1/n)-(1/n^2))^n
August 1, 2016

MATH
Does the series converge or diverge? Use the Root test ((1/n)-(1/n^2))^n
August 1, 2016

math
Does the series converge or diverge? Use the Root test ((1/n)-(1/n^2))^n
July 31, 2016

math
Does the series converge? Explain please 1/(ln 2)^n from n=1 to infinity
July 31, 2016

Math
Does the series converge or diverge (-1)^n * 4n^3 _______________(fraction) n^4 + 1 from n=1 to infinity
July 31, 2016

math
does an=(-1)^n converge? Explain
July 31, 2016

MATH
Does the series converge or diverge? Use the comparison test. Thank you ((1/n)-(1/n^2))^n
July 31, 2016

MATH
Series converges? or diverges? Which test? explain? (n^10) * (3^n) ------------(fraction) (4^n) from n=1 to infinity
July 31, 2016

MATH
Sum? from n=3 to infinity ((2)/(n+1)-(2)/(n+3))
July 31, 2016

MATH
Series converges? or diverges? Which test? explain? (-1)^n * (4n^3) ------------(fraction) (n^4) + 1
July 31, 2016

Math
Is the following series convergent? explain ((2n)!)/((n!)(4^n))
July 30, 2016

MATH
Does the sequence converge? Work out a=-1^n
July 29, 2016

math
10th floor
July 28, 2016

MATH
Solve the integral using trig substitution (1/((x)(x^2+1)))dx
July 24, 2016

MATH
Integrate 1/(x(x^2+1)) dx using trig substitution
July 24, 2016

Math
Evaluate the integral using u substitution ((y^3)/((1-y^2)^2))dy
July 24, 2016

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?
July 18, 2016

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?
July 18, 2016

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
July 18, 2016

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?
July 17, 2016

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?
July 17, 2016

Economics
hey writeacher, you will really get from me one day. You are acting over smart. I will smack you.
July 13, 2016

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.
July 13, 2016

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.
July 7, 2016

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 ...
July 7, 2016

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!
July 6, 2016

Math
Make four 8s equal 8
July 2, 2016

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
June 28, 2016

algebra
Two investments totaling $49,500 produce an annual income of $1770. One investment yields 2% per year, while the other yields 4% per year. How much is invested at each rate?
June 28, 2016

Physics
A water balloon launcher launches a balloon straight up at a flying kite. If the kite is hovering 75.0 meters off the ground, and the balloon hits it on its upward trajectory with a velocity of 12.2m/s, a) What was the launch velocity of the balloon
June 19, 2016

physics
A 5.0 m portion of wire carries a current of 8.0 A from east to west. It experiences a magnetic field of 6.0 × 10^–4 T running from north to south. What is the magnitude and direction of the magnetic force on the wire? 2.4 × 10^–2 N upward 2.4 × 10...
June 13, 2016

Chemistry
Consider the compounds 4-tert-butylcyclohexanol and 4-tert-butylcyclohexanone. Using silica gel plates, which of the two compounds will have the higher Rf value when ethyl acetate is the developing solvent? Which will have the higher Rf value when dichloromethane is the ...
May 30, 2016

Math
Which ordered pair is not a solution of y= -4x -9 A(-9,27) B(3,-21) C(-6,15) D(5,-28) I have no idea how to do this help please
May 26, 2016

Math
Which is equivalent to this expression -4(-3x)+5(-7) A. -12x + 35 B. 12x - 35 C. -7x + 12 D. 7x - 12 Which is equivalent to the inequality shown below? X/2 </= -15 A. X >/= 7.5 B X </= 7.5 C X >/= -30 D X </= -30
May 25, 2016

Math
Write a variable on both sides that has infinite solutions.
May 24, 2016

CIVICS PLS HELP MS. SUE
Then my second choice would be C. if it isnt correct can you please explain to me?
May 20, 2016

CIVICS PLS HELP MS. SUE
ich of the following best illustrates the government's role in controlling financial institutions? A. The government directly influences the price of stocks in the stock market by taxing purchases of stock. B. The government limits the amount of loans that individuals can ...
May 20, 2016

math
@Mrs.Sue
May 20, 2016

math
Mrs.Sue please help
May 20, 2016

math
There are 9 candidates running for 3 seats on a committee. How many different election results are possible? A. 36 B. 84 C. 504 D. 56
May 20, 2016

Math
Anita can clean a typical pool in 8 hours. Chao can clean a typical pool in 6 hours. How long should it take Anita and Chao working together to clean a typical pool? I'd like to know how to work out this problem in order to find the answer.
May 17, 2016

math
The pressure P, of a gas varies inversely with its volume, V. Pressure is measured in units of Pa. Suppose that a particular amount of a gas is initially at a pressure of 84 Pa at a volume of 36 L. If the volume is expanded to 216 L, what will the new pressure be? I don't ...
May 17, 2016

Chemistry
A solution contains H2O2 in water. Complete decomposition of the H2O2 in 170 g of this solution yields 5.6 L of O2(g), measured at 0 oC and 101.325 kPa. What is the percentage by mass of H2O2 in this solution? Choose the closest answer. A 10% B 20% C 5.0% D 3.0% E 1.0%
May 17, 2016

Chemistry
Determine how many grams of Al must react with 2.5 M NaOH in order to produce 40 mL of hydrogen gas at 22°C and 1.02 bar
May 17, 2016

check english please.. romeo and juliet
Read this excerpt from the prologue to act II of Romeo and Juliet: CHORUS: Now old desire doth in his death-bed lie, And young affection gapes to be his heir; That fair for which love groan'd for and would die, With tender Juliet match'd, is now not fair. Now Romeo is ...
May 17, 2016

Walk Two Moons
Has anyone read the story walk two moons? If so, please help. where does Sal BEGIN to realize that her mother is really not returning? A) Lake Michigan B) Madison Wisconsin C) Pipestone Minnesota *** D) Sioux Falls, South Dakota please help, I've read the book and tryed ...
May 14, 2016

Pre Algebra
Is anyone from connexus academy who took the Unit 4 Lesson 7 Polynomials and Properties of Exponents Unit Test?? I need help on the first question...
May 13, 2016

calculus
Find the area of the region bounded by the graph of f(x)=x(x+3)(x+1) and the x-axis on the interval [-3,0]
May 12, 2016

history
Evaluate one viewpoint on each of the following in the Andes and the Pampas: the environment, globalization and the economic growth
May 12, 2016

Language Arts
and is the second question c?
May 12, 2016

Language Arts
the first one is b then right?
May 12, 2016

Language Arts
Under a spreading chestnut tree The village smithy stands; The smith, a mighty man is he, With large and sinewy hands; And the muscles of his brawny arms Are strong as iron bands. His hair is crisp, and black, and long, His face is like the tan; His brow is wet with honest ...
May 12, 2016

History
I'm looking for globalization in the Andes. I'm not looking for answers just maybe a link for help or something? thanks.
May 12, 2016

History
How does elevation impact ecosystems in South America A. Farmers can grow different crops at different elevations (this one?) B. Plants do not grow above the tree line C. Animals can't live in higher evelations D. Humans settle only in the lowest elevations
May 12, 2016

calculus 1
Set up the simplified integral and compute the volume created when the area bounded by y=.25x4, y=4, and the y=axis (Quadrant 1) is rotated around the line x=-2
May 11, 2016

Chemistry
5.88 moles of nitrogen and 16.2 moles of oxygen are mixed until the equilibrium is established, 11.28 moles of nitric oxide are formed calculate the value of equilibrium constant
May 11, 2016

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