Sunday
February 26, 2017

Posts by sally

Total # Posts: 1,183

American Government
Question 7 is separation of powers and checks and balances.
February 1, 2017

American Government
its d
February 1, 2017

alegbra
Thank you!
January 30, 2017

alegbra
what are the next three terms in the sequence? 5,-9,19,-37,75, ___, ____, ____
January 30, 2017

Algebra
what are the first three terms of the sequence represented by the expression n(n-1)-4? n=1
January 30, 2017

algebra
Given the function rule f(x)=x^2-5x+1, what is the output of f(-3)
January 30, 2017

trig
Reiny 2+1/3*tan(theta)=2 How do you get 0? Thanks for your help.
January 24, 2017

Trig
2+1/3tan(theta)=2 I know that tan=0 0,180 But i don't know how to figure it out. Please help.
January 24, 2017

Trig
4=5+cos(theta)
January 24, 2017

Trig
Thank you Steve for all your help.
January 24, 2017

Trig
Solve equation for 0 less than or equal to theta less than 360. 3-1/5*tan(theta)=16/5
January 24, 2017

social studies
Is it A?
January 20, 2017

Math (6th grade)
How do I find the answer to 234 divided by 89 + 53 x 72
January 11, 2017

precalculus
show the correct notation for “The limit of x^2 - 1 as x approaches 3.
December 21, 2016

precalculus
Show an example where For n odd, the sign of the y-ters differ: (+) for the first expansion, (-) for the second. (For n even, the signs are the same.)
December 17, 2016

precalculus
Can you give an example as to how The expansion of (x + y)n and (x - y)n are different?
December 17, 2016

precalculus
How is the expansion of (x + y)n different to the expansion of (x - y)n ?
December 17, 2016

precalculus
How do you form the the rows of Pascal’s triangle?
December 17, 2016

precalculus
can you check my answer? Find the coefficient of the term a6b3 in the binomial expansion of the expression (a - 4b)9. ________________________________________ 5,376 344,064 -5,376 -344,064 answer: b
December 16, 2016

precalculus
Can you check my answers? 1.Find the 5th term in the expansion of the binomial. (2x - 4)8 -458,752x3 286,720x4 458,752x3 35,840x4 answer: d 2.Find the 3rd term in the expansion of the binomial. (x - 2y)12 264x10y2 1760x9y3 -264x10y2 -1760x9y3 answer:a
December 16, 2016

precalculus
Can you check my answers? 1.Use the Binomial Theorem to expand and simplify the expression. (2 - 3x)3 -27x3 + 104x2 - 36x + 8 -27x3 + 54x2 - 36x + 8 -27x3 + 8 -27x3 + 54x2 - 18x + 8 answer:b 2.Find the 5th term in the expansion of the binomial. (2x - 4)8 -458,752x3 286,720x4 ...
December 16, 2016

precalculus
can you check my answers? 1.Find the binomial coefficient. 12C3 1320 17740800 48 220 answer:d 2.Find the binomial coefficient. (10/7) 720 120 240 172800 answer:b 3.Which of the following is equivalent to 10C6? 6C10 16C10 10C4 10C10 answer:c
December 16, 2016

precalculus
How would you describe a proof by mathematical induction?
December 16, 2016

precalculus
Is my answer correct? Which of the following shows the correct first step to prove the following by mathematical induction? 3 + 11 + 19 + 27 + … + (8n - 5) = n(4n - 1) ________________________________________ 3 + 11 + 19 + 27 + … + (8 • 1 - 5) = 1(4 • 1 - 1...
December 15, 2016

precalculus
Is my answer correct? Find Pk + 1 if Pk = 7 + 13 + 19 + ...+[6(k - 1)+1] + (6k + 1) ________________________________________ 7 + 13 + 19 + …+[6(k - 1) + 1] + (6k + 1) + [6(k + 1) + 1] 8 + 14 + 20 + …+[7(k - 1) + 1] + (7k + 1) 7 + 13 + 19 + …+(6k + 1) 7 + 13 + 19...
December 15, 2016

precalculus
Is my answer correct, I am confused by this question? Find the second difference for the sequence. 7, 6, 7, 10, 15, 22, …. 1 2 3 5 answer: 2
December 15, 2016

precalculus
can you check my answer? 2.Which of the following shows the best next step to prove the following by mathematical induction? n!>2^n, n?4 1. When n=1 the formula is valid because 4!>2^4 24>16 2.Assuming that k!>2^k show that (k+1)!>2^k+1 (k+1)!=k!(k+1) a.k!(k+1)&...
December 15, 2016

precalculus
Can you check my answers? 1.Which of the following shows the best next step to prove the following by mathematical induction? 3^n>n*2^n, n?1 1.When n=1, the formula is valid because 3^1 1*2^1 3>2 2.Assuming that 3^k>k*2^k a.3^k+1>k+1*2^k+1 b.3^k+1>k*2^k+1 c.4^k&...
December 15, 2016

precalculus
Can you check my answer? Which of the following shows the best next step to prove the following by mathematical induction? 1+4+7+10 + + (3n-2)=n/2(3n-1) 1.When n=1, the formula is valid because (3*1-2)=1/2(3*1-1) (3-2)=1/2(3-1) 1=1/2(2) 1=1 A. You must show that 1+4+7+10...
December 15, 2016

precalculus
Can you check my answers? 1.Which of the following shows the best next step to prove the following by mathematical induction? 3^n>n*2^n, n?1 1.When n=1, the formula is valid because 3^1 1*2^1 3>2 2.Assuming that 3^k>k*2^k a.3^k+1>k+1*2^k+1 b.3^k+1>k*2^k+1 c.4^k&...
December 15, 2016

precalculus
Are my answers correct if not which are right? Find the second difference for the sequence. 7, 6, 7, 10, 15, 22, …. 1 2 3 5 answer:a Find first differences for the sequence in order from a1 to a5. Determine whether or not the series is quadratic or not. -1, -3, -1, 5, 15 ...
December 14, 2016

precalculus
Find Pk + 1 if Pk = 7 + 13 + 19 + ...+[6(k - 1)+1] + (6k + 1) 7 + 13 + 19 + …+[6(k - 1) + 1] + (6k + 1) + [6(k + 1) + 1] 8 + 14 + 20 + …+[7(k - 1) + 1] + (7k + 1) 7 + 13 + 19 + …+(6k + 1) 7 + 13 + 19 + ...+[6(k - 1) + 1] + (6k7 +1) + (6k + 2) answer:D What is ...
December 14, 2016

precalculus
For question 1 Find Pk + 1 if Pk = 7 + 13 + 19 + ...+[6(k - 1)+1] + (6k + 1) there isnt an option for the answer Pk = 7 + 13 + 19 + ...+[6(k - 1)+1] + (6k + 1) + (6k + 7) so I am confused as to which is the correct answer. for question 3 Which of the following shows the ...
December 14, 2016

precalculus
Find a quadratic model for the sequence. -4, -4, -3, -1, 2
December 14, 2016

precalculus
find Pk + 1 if Pk=2K-1/k!
December 14, 2016

precalculus
Find a quadratic model for the sequence with the indicated terms. 3, 3, 5, 9, 15, 23, ...
December 14, 2016

precalculus
Prove the inequality for the indicated integer values of n. n! > 2n, n ? 4
December 14, 2016

precalculus
Find Pk + 1 for the given Pk. Pk = 1 + 6 + 11 + … + [5(k - 1) - 4] + (5k - 4)
December 14, 2016

American Government
1. B 2. D 3. A i just got 100%
November 17, 2016

Problem solving
Place a counter over the children. Draw the counter. Dont not what im suppose to do though.
November 10, 2016

Probability & Stats
The probability that Pete will catch fish on a particular day when he goes fishing is 0.8. Pete is going fishing 3 days next week. 1. The probability that Pete will catch fish on exactly one day is: a. .008 b. .096 c. .104 d. .8 Please show work
November 2, 2016

social study's
B) the gradual end of the nomadic lifestyle
October 25, 2016

Algebra 2
Describe the graph of y=1/2x-10 -3 compared to the graph of y=1/x
October 17, 2016

Algebra2
Does the relation in the table represent direct variation inverse variation or neither? If it is a direct or inverse variation, write an equation to represent the relation. (x,y) (5,2) (10,1) (15,2/3) (20,1/2)
October 17, 2016

Physics
A 54100 kg space ship has completed two thirds of its journey from the earth to the Moon. At this position, what magnitude force would the ship's engines have to supply to be the equilibrant? Assume the mass of the moon is 7.35E + 22 kg and the distance between the earth ...
October 10, 2016

physics
A bullet leaves a rifle with a muzzle velocity of 553 m/s. While accelerating through the barrel of the rifle, the bullet moves a distance of 0.648 m. Determine the acceleration of the bullet (assume a uniform acceleration).
September 22, 2016

Math
don't be rude. there is no purpose of you being here if you cannot help.
September 21, 2016

math
a lighthouse is 30m high. the angle of elevation from a ship to the top of the tower is 17 degrees. what is the horizontal distance from the ship to the lighthouse?
September 20, 2016

Pre cal
Fine a third degree polynomial function f(x) with real coefficients that has 4 and 2i are zeros and such that f(-1) =-50 4 21 -2i (x-4)(x-2i)(x+2i) (x-4)(x2+4) x3-16+4x-4x2 (x3-4x2+4x-16) -50=a(-1-4-4-16) -50=.25 a=2 Not understanding, please help
September 4, 2016

algebra
The area of a rectangle is 72 cm². The length. l, of the rectangle is 6 cm longer than the width, w. What is the width of the rectangle? 10 cm 8 cm 6 cm 2 cm
August 26, 2016

math
What is x on a 45,45,90 triangle if the hypotenuse is 145?
August 24, 2016

physics
An infinitely-long wire with resistivity 2.0*10^-8 ohm*m initially has 1.5 A of "conduction" current flowing through it. When the emf connected to the wire is turned off, this current stops in time of .6ns. Estimate the amount of displacement current created in the ...
July 20, 2016

Physics
I am uncertain on how to use gauss's law to derive the expression for the electric fields
June 15, 2016

Physics
An infinitely long, solid insulating cylinder with radius a has positive charge uniformly distributed throughout it with a constant charge per unit volume p. a) using Gauss's law, derive the expression for the electric field inside the cylinder r<a from the axis of the ...
June 15, 2016

mathematics
so instead of putting 40 squared i would put 40^2 correct? Thank you!
June 9, 2016

ALGEBRA
I don't understand
June 9, 2016

ALGEBRA
what about the rest?
June 9, 2016

ALGEBRA
Create a rational function with a linear binomial in both the numerator and denominator. Part 1. Graph your function using technology. Include the horizontal and vertical asymptotes and the x- and y-intercepts on your graph. Label the asymptotes and intercepts. Part 2. Show ...
June 9, 2016

Algebra
is that the answer?
June 9, 2016

Algebra
Create a system of equations that includes one linear equation and one quadratic equation. Part 1. Show all work to solving your system of equations algebraically. Part 2. Graph your system of equations, and show the solution graphically to verify your solution.
June 9, 2016

Algebra
Scores on a statewide standardized test are normally distributed with a mean of 12.89 and a standard deviation of 1.95. Certificates are given to students whose scores are in the top 2% of those who took the test. This means that they scored better than 98% of the other test ...
June 9, 2016

Math
Ms. Sue?
May 4, 2016

Math
Maria wants to cover the box shown below with paper.Which of the following could be the dimensions of the paper so that Maria has enough to cover the box, including the ends, with a little left over? Shape: Rectangular Prism Length:8 in Width: 2 in Height: 2 in A) 8 in x 4 in ...
May 4, 2016

Math
Ms. Sue? Reed? Anyone?
May 4, 2016

Math
Maria wants to cover the box shown below with paper.Which of the following could be the dimensions of the paper so that Maria has enough to cover the box, including the ends, with a little left over? Shape: Reactangular Prism Length:8 in Width: 2 in Height: 2 in A) 8 in x 4 in...
May 4, 2016

Math
thanks!
May 3, 2016

Math
Find the surface area of the prism. Rectangular Prism L=13 m W=6 m H=5 m A) 48m B)346m**** C)780m D)195m Please help!
May 3, 2016

Chemistry- polarity
Is 2,4-Hexadiyne-1,6-diol a polar or non-polar compound? I think it is non-polar, based on the the high retention factor (0.89) I got from the TLC.
May 1, 2016

LA
thanks so much.
April 29, 2016

LA
This summer, we will host an exchange student from Ecuador. What is the prepositional phrase in the sentence? a) This summer b) we will host c) an exchange student d) from Ecuador **** please help!!
April 29, 2016

LA (Ms. sue?)
Thanks!
April 27, 2016

LA (Ms. sue?)
The phrase closest in meaning to destined for is a) meant for* b) married to c) interested in d) loved by please help idk if it's a or c!! Ms.Sue?
April 27, 2016

math
Solve each equation by using the Quadratic Formula. Round to the nearest tenth if necessary. 1.6x2 + 2x + 2.5 = 0
April 27, 2016

math
How is the squareroot of -1 classified?
April 22, 2016

Social studies
Thanks, Ms.Sue
April 20, 2016

Social studies
Byzantine civilization was based on Roman traditions at first, but eventually was much more influenced by _________ culture. German Greek** Slavic Egyptian I need help asap!
April 20, 2016

math
| x + 1 | + 6 = 3
April 20, 2016

Geometry
Altitudes $\overline{XD}$ and $\overline{YE}$ of acute triangle $\triangle XYZ$ intersect at point $H$. If the altitudes intersect at a $123^\circ$ angle, and $\angle YXH = 26^\circ$, then what is $\angle HZX$ in degrees?
April 19, 2016

Geometry
Altitudes $\overline{XD}$ and $\overline{YE}$ of acute triangle $\triangle XYZ$ intersect at point $H$. If the altitudes intersect at a $123^\circ$ angle, and $\angle YXH = 26^\circ$, then what is $\angle HZX$ in degrees?
April 19, 2016

help ms. sue/ science
how is a parallel circuit different from a series circuit? Need help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
April 15, 2016

plz help
Soooooooooooooooooooo...
April 15, 2016

Health
The following is a health benefit of a nicotine substitute: it is cheaper than regular cigarettes so you can still get the benefit of nicotine at a lower cost. true false** I have no clue. can someone please help me?
April 12, 2016

Healthcare Statistic
The HIM coding supervisor agrees to pay a new graduate $13.50 per hour. This is a full-time coding position at 2,080 hours per year. The cost for a full-time employee's fringe benefits is 24 percent of the employee's salary. How much must the supervisor budget for the ...
April 10, 2016

History
Where are your answers?
April 6, 2016

Science
Wait no, is it C?
April 6, 2016

Science
Why is a gas able to flow? It's particles have melted and can move around. It's particles have high viscosity and can move around. It's particles have enough energy to move around. It's particles have enough pressure to move around.** not sure of the answer. ...
April 6, 2016

Math
Oh okay thanks! Sorry that was such a dumb question lol my brain was not working.
April 6, 2016

Math
Similar polygons are _____ the same size. always sometimes** never I'm having a brain fart. ahh! please help!
April 6, 2016

History (check answer!)
I'm late but the answer is C
April 6, 2016

History
thank you!
April 6, 2016

History
The Roman Empire was largest during which emperors rule? Hadrian Nerva Marcus Aurelius Trajan*** please help!
April 6, 2016

Check answers?
A!
April 6, 2016

Math
Because if the room is square, and the walls are 14 ft long, 14 * 14 is 196 square ft. 90 times 3 is 270, and it is the least number there, and 2 (even though it is not there, it would equal 180). Am I right?
April 4, 2016

Math
Each pail of plaster covers 90 square feet of ceiling. What is the least number of pails of plaster you would need to buy to cover the ceiling of a square room with walls 14 feet long? 5 pails 6 pails 3 pails (my answer) 4 pails
April 4, 2016

math
BOOKS A library contains 2000 books. There are 3 times as many non-fiction books as fiction books. Write and solve a system of equations to determine the number of non-fiction and fiction books.
April 4, 2016

Math
51.75 cubes
March 26, 2016

Science
I'm late, but yes, it's d.
March 16, 2016

Calculus Related Rates
A balloon, 50 feet from an observer, is rising at 20 ft/sec. At 5 seconds after lift off 1. How fast is the distance between the observer and the balloon changing? 2. How fast is the angle of elevation changing? I need help on both questions. Thanks in advance smart people!!
March 14, 2016

Algebra
No
March 13, 2016

Algebra
Is .0010001... Rational?
March 13, 2016

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