Monday

May 4, 2015

May 4, 2015

Total # Posts: 755

**pre-calc**

When I do it , it says Im wrong
*April 16, 2015*

**pre-calc**

I don't know how to use that
*April 16, 2015*

**pre-calc **

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20
*April 16, 2015*

**English 4**

Im not asking to write an essay for me , I just wanted some details about them
*April 16, 2015*

**English 4**

Yeah I have , Thank you Reed. I just wanted to refresh my memory instead of going threw both of the books again
*April 16, 2015*

**English 4**

lol i know what difference and alike is .. I just didn't know about the two , I read a long time ago and forgot
*April 16, 2015*

**English 4**

there stories , And no I don't , I have to write an essay about the likes and difference on them
*April 16, 2015*

**English 4**

what is the difference and the likes of Psalm 23 and The Sermon on the Mount ?
*April 16, 2015*

**pre-calc **

A statement Sn about the positive integers is given. Write statements S1, S2, and S3, and show that each of these statements is true. Show your work. Sn: 1^2 + 4^2 + 7^2 + . . . + (3n - 2)^2 = (n(〖6n〗^2-3n-1))/2 S1:1^2+4^2+7^2+…+(3*1-2)^2=1(6*1^2-3n-1)/2 S1...
*April 16, 2015*

**pre-calc **

A woman works out by running and swimming. When she runs, she burns 7 calories per minute. When she swims, she burns 8 calories per minute. She wants to burn at least 336 calories in her workout. Write an inequality that describes the situation. Let x represent the number of ...
*April 16, 2015*

**pre - CALCULUS**

Solve the system of equations using matrices. Use Gaussian elimination with back- substitution. x+y+z = -5 x-y+3z = -1 4x+y+z = -2
*April 15, 2015*

**pre - CALCULUS**

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20
*April 15, 2015*

**pre - CALCULUS**

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20
*April 15, 2015*

**pre - CALCULUS**

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20
*April 15, 2015*

**Pre - CALCULUS**

Graph the function. Then use your graph to find the indicated limit. You do not have to provide the graph f(x) = 5x - 3,lim x -->5 f(x)
*April 15, 2015*

**english**

Compare Psalm 23 and The Sermon on the Mount
*April 14, 2015*

**PRE - CALCULUS**

Graph the function. Then use your graph to find the indicated limit. You do not have to provide the graph f(x) = 5x - 3,lim x -->5 f(x)
*April 14, 2015*

**Pre - CALCULUS**

Graph the function. Then use your graph to find the indicated limit. You do not have to provide the graph f(x) = 5x - 3,lim x -->5 f(x)
*April 14, 2015*

**What does this mean**

Oh okay Thanks
*April 13, 2015*

**What does this mean**

develop a two-page (400-500 word) "400-500" What does that mean on Microsoft
*April 13, 2015*

**pre - CALCULUS**

or should I just do this instead of all my factors and simplifies 2y - x = 5 2y - 5 = x so x = 2y - 5 (2y - 5)² + y² - 25 = 0 (2y - 5)(2y - 5)
*April 13, 2015*

**pre - CALCULUS**

2y - x = 5 2y - 5 = x so x = 2y - 5 (2y - 5)² + y² - 25 = 0 (2y - 5)(2y - 5) 4y² - 10y - 10y + 25 4y² - 20y + 25 4y² - 20y + 25 + y² - 25 = 0 4y² + y² - 20y = 0 4y² + y² - 20y = 0 y(4y + y - 20) = 0 y=0 x= -5 4y + y - 20 = 0 5y...
*April 13, 2015*

**pre - CALCULUS**

Solve the system by the substitution method. Show your work. 2y - x = 5 x2 + y2 - 25 = 0
*April 13, 2015*

**Pre - CALCULUS**

Solve the system by the substitution method. Show your work. 2y - x = 5 x2 + y2 - 25 = 0
*April 13, 2015*

**Pre - CALCULUS**

Thank you guys :)
*April 13, 2015*

**Pre - CALCULUS**

Locate the foci of the ellipse. Show your work. 𝑥2/36+ y2/11=1
*April 13, 2015*

**pre - CALCULUS**

Thank you :)
*April 13, 2015*

**pre - CALCULUS**

Find the indicated sum. Show your work. 4 k=1 (-1)^k(k+11) ￼Inbetween the 4 and k , Theres a backwards 3 sign
*April 13, 2015*

**PRE - CALCULUS**

Thank you
*April 12, 2015*

**PRE - CALCULUS**

Eliminate the parameter t. Find a rectangular equation for the plane curve defined by the parametric equations. x = 6 cos t, y = 6 sin t; 0 ≤ t ≤ 2π A. x2 - y2 = 6; -6 ≤ x ≤ 6 B. x2 - y2 = 36; -6 ≤ x ≤ 6 C. x2 + y2 = 6; -6 ≤ x &#...
*April 12, 2015*

**pre - CALCULUS**

Thanks you
*April 11, 2015*

**pre - CALCULUS**

Hmm okay thanks anyways , I'ma just move on and check my other one
*April 11, 2015*

**pre - CALCULUS**

Okay tHANKS
*April 11, 2015*

**pre - CALCULUS**

I don't know how to use that calculator , I've tried
*April 11, 2015*

**pre - CALCULUS**

Okay but my answer is C is that wrong or right ?
*April 11, 2015*

**pre - CALCULUS**

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. x + y + z = 9 2x - 3y + 4z = 7 x - 4y + 3z = -2 A. {(-7z/5+34/5 ,2z/5 +11/5 , z)} b. {(- 7z/5+34/5 , 2z/5- 11/5 , z)} c . {( z/5+ 34/5 , 2z/5+11/5 , z)} C?
*April 11, 2015*

**Pre - CALCULUS**

LOL You got me confused because I said my answer was C in the first place lmao , THANK YOU !!
*April 11, 2015*

**Pre - CALCULUS**

1/12 ?
*April 11, 2015*

**Pre - CALCULUS**

B ?
*April 11, 2015*

**Pre - CALCULUS**

Find the inverse of the matrix, if possible. A = { 0 -6 } {-2 -5} A. 0 -1/2 -1/6 5/12 B. -1/6 0 5/12 - 1/2 C. 5/12 - 1/2 -1/6 0 D. 5/12 1/2 1/6 0 C ?
*April 11, 2015*

**Pre - CALCULUS**

Thanks !
*April 11, 2015*

**Pre - CALCULUS**

SO I'm right ? :)
*April 11, 2015*

**Pre - CALCULUS**

Use Cramer's rule to solve the system. 2x + 4y - z = 32 x - 2y + 2z = -5 5x + y + z = 20 A. {( 1, -9, -6)} B. {( 2, 7, 6)} C. {( 9, 6, 9)} D. {( 1, 9, 6)} d ?
*April 11, 2015*

**pre - CALCULUS**

c ? :)
*April 11, 2015*

**pre - CALCULUS**

Let B = [-1 3 6 -3]. Find -4B. A. [-4 12 24 -12] B. [-3 1 4 -5] C. [4 -12 -24 12] D. [4 3 6 -3] b ?
*April 11, 2015*

**pre - CALCULUS**

thank you guys :)
*April 11, 2015*

**pre - CALCULUS**

Use Cramer's rule to determine if the system is inconsistent system or contains dependent equations. 2x + y = 8 6x + 3y = 24 A. system is inconsistent B. system contains dependent equations b ?
*April 11, 2015*

**pre - CALCULUS**

Solve the system by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets. x + y = -8 x - y = 14 A. {( 3, -11)} B. {( 3, 11)} C. {(x, y) | x + y = -8} D. ∅ B?
*April 11, 2015*

**pre - CALCULUS**

Complete the following: (a) Use the Leading Coefficient Test to determine the graph's end behavior. (b) Find the x-intercepts. State whether the graph crosses the x-axis or touches the x-axis and turns around at each intercept. Show your work. (c) Find the y-intercept. ...
*April 10, 2015*

**pre - CALCULUS**

lol thank you so much again :)
*April 10, 2015*

**pre - CALCULUS**

Use the compound interest formulas A = Pert and A = P(1 + 𝑟/n)^nt to solve. Suppose that you have $11,000 to invest. Which investment yields the greater return over 10 years: 6.25% compounded continuously or 6.3% compounded semiannually? Show your work.
*April 10, 2015*

**Pre - CALCULUS**

You can do the rest here , Thank you by the way !
*April 10, 2015*

**Pre - CALCULUS**

For the data set shown by the table, a. Create a scatter plot for the data. (You do not need to submit the scatter plot) b. Use the scatter plot to determine whether an exponential function or a logarithmic function is the best choice for modeling the data. Number of Homes ...
*April 10, 2015*

**pre - CALCULUS**

Yeah sorry , I was trying to re post it so it would be easier for you to see it , But i seen that you replied , I replied back
*April 10, 2015*

**pre - CALCULUS**

Begin by graphing the standard absolute value function f(x) = | x |. Then use transformations of this graph to describe the graph the given function. h(x) = 2 | x | + 2
*April 10, 2015*

**pre - CALCULUS**

Thank you !! Can you help with my other two questions i had post ?
*April 10, 2015*

**pre - CALCULUS**

Can you show your work please ? and thats what the question says exactly
*April 10, 2015*

**pre - CALCULUS**

Find the specified vector or scalar. Show your work. u = -4i + 1j and v = 4i + 1j; Find ‖𝑢 + 𝑣‖.
*April 10, 2015*

**pre - CALCULUS**

Thank you
*April 10, 2015*

**pre - CALCULUS**

Find functions f and g so that h(x) = (f ∘ g)(x). h(x) = (6x - 14)8
*April 10, 2015*

**pre - CALCULUS**

Thank you !!!
*April 10, 2015*

**pre - CALCULUS**

Oh so the answer is (1,1) .. How can I describe it ? cause it says "Then use transformations of this graph to describe the graph the given function. "
*April 10, 2015*

**pre - CALCULUS**

when do i stop ? 1,1 ---> 1,6 1,1 1,8 2,2 2,4
*April 10, 2015*

**pre - CALCULUS**

Begin by graphing the standard absolute value function f(x) = | x |. Then use transformations of this graph to describe the graph the given function. h(x) = 2 | x | + 2
*April 10, 2015*

**pre - CALCULUS**

Thank you !!
*April 10, 2015*

**pre - CALCULUS**

Find the reference angle for the given angle. Show your work. -404° my answer is 44 degree , But i don't know how to put my work together..
*April 10, 2015*

**pre - CALCULUS**

Find functions f and g so that h(x) = (f ∘ g)(x). h(x) = (6x - 14)8
*April 10, 2015*

**Pre - CALCULUS**

B^2-4AC= 144-120= 24 x=12+sqrt24 / 12 2*2*2*3 sqrt24=sqrt2*2*2*3= + 2* sqrt6 x=(12+2*2.449)/12 x =(12+√24)/12=1+1/6√ 6 = 1.408
*April 10, 2015*

**Pre - CALCULUS**

6x2 ?
*April 10, 2015*

**Pre - CALCULUS**

Find the x-intercepts (if any) for the graph of the quadratic function. 6x2 +12x+5=0 Give your answers in exact form. Show your work.
*April 10, 2015*

**pre - CALCULUS**

The wind chill factor represents the equivalent air temperature at a standard wind speed that would produce the same heat loss as the given temperature and wind speed. One formula for computing the equivalent temperature is 𝑡 W(t) = {33 − (10.45+10√𝑣...
*April 9, 2015*

**pre - CALCULUS**

Yeah I had this answer , just making sure , Thank you :)
*April 9, 2015*

**pre - CALCULUS**

Verify the identity. Show your work. (1 + tan2u)(1 - sin2u) = 1
*April 9, 2015*

**pre - CALCULUS**

The wind chill factor represents the equivalent air temperature at a standard wind speed that would produce the same heat loss as the given temperature and wind speed. One formula for computing the equivalent temperature is 𝑡 W(t) = {33 − (10.45+10√𝑣...
*April 9, 2015*

**pre - CALCULUS**

Thank you !!
*April 9, 2015*

**pre - CALCULUS**

A gas company has the following rate schedule for natural gas usage in single-family residences: Monthly service charge Per therm service charge 1st 25 therms Over 25 therms $8.80 $0.6686/therm $0.85870/therm What is the charge for using 25 therms in one month? Show your work...
*April 9, 2015*

**pre - CALCULUS**

Thank you !
*April 9, 2015*

**pre - CALCULUS**

Verify the identity. Show your work. cot θ ∙ sec θ = csc θ
*April 9, 2015*

**PRE - CALCULUS**

Thank you
*April 8, 2015*

**PRE - CALCULUS**

Solve the quadratic equation by the square root property. (2x + 5)2 = 49 A. {-6, 1} B. {0, 1} C. {-27, 27} D. {1, 6} d?
*April 8, 2015*

**PRE - CALCULUS**

I did do that but i had got it wrong
*April 8, 2015*

**PRE - CALCULUS**

Evaluate the radical expressions or indicate that the root is not a real number. 3sqrt-4^3 A. -64 B. 4 C. -4 D. not a real number B?
*April 8, 2015*

**Physics !**

A. series R=r+r+r parallel 1/r=1/r+1/r+1/r B. series R=R1+R2+R3 Parallel 1/R= 1/r1+1/r2+1/r3 C. p=1xV=90 mA x 9V=0.81W D. 3(1/3) Ax120 V= 120 W) Are those right so far ?
*April 7, 2015*

**Physics !**

Three identical light bulbs are connected in series, then are disconnected and arranged in parallel. For each of the scenarios below indicate what changes (if any) take place A. Total resistance of the circuit B. Total current of the circuit C. Power dissipated by the circuit ...
*April 7, 2015*

**Physics!**

THANK YOU !!!!
*April 7, 2015*

**Physics!**

An ammeter indicates the current for a toaster is 5.0 amps when the toaster is connected to 120-V circuit. How much energy is given off by the toaster in 42.0 seconds? Show all calculations leading to an answer.
*April 7, 2015*

**I NEED HELP WITH THIS**

Three identical light bulbs are connected in series, then are disconnected and arranged in parallel. For each of the scenarios below indicate what changes (if any) take place A. Total resistance of the circuit B. Total current of the circuit C. Power dissipated by the circuit ...
*April 7, 2015*

**Physics!**

An ammeter indicates the current for a toaster is 5.0 amps when the toaster is connected to 120-V circuit. How much energy is given off by the toaster in 42.0 seconds? show all the calculations leading to your answer
*April 7, 2015*

**Physics**

A hard-rubber or plastic comb rubbed against wool can often be shown to have a static charge. Why does a metal comb not readily show a static charge when rubbed against wool?
*April 6, 2015*

**Help please**

No some will answer other people "physic" questions but not mine. So I thought this time I'll type "please help" to catch someones attention and I did with you.
*April 6, 2015*

**Help please**

Well I have been doing that the past 2 days and I haven't been getting help.
*April 6, 2015*

**Help please **

A hard-rubber or plastic comb rubbed against wool can often be shown to have a static charge. Why does a metal comb not readily show a static charge when rubbed against wool?
*April 6, 2015*

**physics**

Consider eight two-cubic centimeter (2 cm3) sugar cubes stacked so that they form a single 2 x 2 x 2 cube. How does the surface area of the single, large cube compare to the total surface area of the individual eight cubes? Report your answer as a ratio. Be sure to show all ...
*April 6, 2015*

**physics**

A falling 50-kg skydiver experiences an upward acceleration of 6.2 m/s2 when she opens her parachute. Show (by calculation) how much drag force is produced by the parachute. (50*10)=500N (10+6.2)=16.2m/sec^2 force = (ma)=50*16.2=810N
*April 5, 2015*

**physics**

The sun’s mass is about 2.7 x 107 times greater than the moon’s mass. The sun is about 400 times farther from Earth than the moon. How does the gravitational force exerted on Earth by the sun compare with the gravitational force exerted on Earth by the moon? Amoon = ...
*April 5, 2015*

**physics **

A 2.0-gram bullet is shot into a tree stump. It enters at a speed of 3.00 x 104 cm/s and comes to rest after having penetrated 0.05 m in to the stump. What was the average force during the impact? Show all calculations leading to an answer. KE 1= 1/2*0.002kg*300^2m/s=30 j KE2=...
*April 5, 2015*

**physics**

(2m)u = (m+2m)v v= (2/3)u = (2/3)(5meters/s) = 3.33 meters/s
*April 5, 2015*

**physics **

If a stationary cart is struck head-on by a cart with twice mass of the stationary one and a velocity of 5 m/s, what will be the new velocity of the stationary cart if the collision is inelastic? Show all calculations leading to an answer.
*April 5, 2015*

**physics **

At a particular point, a satellite in an elliptical orbit has a gravitational potential energy of 7000 MJ with respect to Earth’s surface and a kinetic energy of 4000 MJ. At another point in its orbit, the satellite’s potential energy is 2000 MJ. What is its kinetic ...
*April 5, 2015*

**physics **

Leon’s bicycle wheels have a circumference of 2 m. What is his linear speed when the wheels rotate at 1 revolution per second? Show all work leading to your answer. The wheel doesn't slip on the ground so the ground goes by at the same rate that a point on the rim of ...
*April 5, 2015*