Monday
April 21, 2014

Posts by Zack


Total # Posts: 238

Calculus
A ball is thrown vertically upward with an initial velocity of 135 feet per second, the ball’s height after t second is s(t) = 135t – 22t How to calculate average velocity from 1 to 3 seconds?

Math
A kaleidoscope is a tube-shaped instrument that contains mirror and colored glass. When a viewer looks in one end, (s)he sees vibrant, changing patterns. Tami sees a kaleidoscope in the shape of triangular prism. It has a height of 4 inches, a base of 5 inches and a depth of 8...

Math
Thank you but it would have been better if you told me how to answer it not the answers

Math
1 Catriona is deciding how large of a cake to order for a party. She can choose from a 1-layer cake that serves 10 people, a 2-layer cake that serves 20 people, a 3-layer cake that serves 40 people, or a 4-layer cake that serves 65 people. The cost of the cake increases with i...

math
what is she made a 8 out of 22

math
lenzy has a 77 a c. as a grade. if she fails a test worth 26% 0/22 what will her grade be

language arts(CHECK ANSWERS)
please check these answers there really quick. 11.the zoo has recently acquired pandas,giraffes and lions. were does a comma belong? A. After and B. After zoo C. After giraffes(I PICK THIS) D. After acquired 12.Hector would you please relax? where does a comma belong? A. After...

Economy (vehicles)
What is a bi-wheel vehicle?

Physics
The road runner drops a boulder from a 53 meter high building. When the block is 14 meters above the ground, the 2 meter tall Wiley Coyote looks up and sees the boulder. How much time does he have to get out of the way?

physics
Larry stands on a bathroom scale while riding up in an elevator. His mass is 75 kg. At the current time the scale reads 100 lb. assuming the upward direction is regarded as positive, what is Larry’s acceleration in m/s2? What is happening to the elevator at this instant (...

Biomechanics
Larry stands on a bathroom scale while riding up in an elevator. His mass is 75 kg. At the current time the scale reads 100 lb. assuming the upward direction is regarded as positive, what is Larry’s acceleration in m/s2? What is happening to the elevator at this instant (...

English
I think this is C if not Which analogy would best go with this one? branch:tree:: A. flower:garden B. teo:three C. tentacle:octopus D. near:far

English
Would this be D if not Which analogy would best go with this one? A:Z:: A. girl:mother B. weight:pounds C. truth:lie D. prologue: epilogue

English
Whish analogy would best go with this one? A:Z:: A. girl:mother B. weight:pounds C. truth:lie D. prologue: epilogue

english
Create an accurate summary of “The Cold Equations” that details the important events of the story. Provide your answer in three to five sentences. Can someone help me with this please?

Algebra
One side of a triangle is 3 inches shorter than twice the length of the shortest side. The third side is 5 inches longer than the shortest side. If the perimeter is 110 inches, find the lengths of all three sides. So what are all the three sides?

Math
(2x2)-(3x2x-3)-(2x-3x2) 4 - 18 - -12 -14 - -12 -2

Algebra
When setting the price of admission tickets for the amusement park, Tabitha wants the price for a two child, two- adult family to be $100. She also wants the adult tickets to cost $8 more than twice the cost of a child's ticket. How much should a child"s ticket cost?

geometry
Assume that lines that appear to be tangent are tangent. O is the center of the circle. Find the value of x. Figures are not drawn to scale. m<P=14

Advanced Functions/Trig
Prove the identity: cos^4 x + sin^4 x = 1 - (1/2)sin^2 (2x)

Algebra
How many hands of 5 cards can be made from a standard deck of cards such that each hand contains exactly 1 red card and 4 black cards?

Chemistry 12
Determine the molar solubility of lead(II) iodide, PbI2, in 0.050 mol/L NaI. Ksp of PbI2 = 9.8 x 10^(-9)

Advanced Functions/Trig
Prove the following: sin(x+y)sin(x-y) = cos^2 (y) - cos^2 (x)

Physics
The electric field lines surrounding three charges are shown in the figure below. The center charge is q2 = -15.9 µC.

Math
80=20 divide 5

Math
What is the mathematical expression for 80 is 20 times as many as 5?

Math
How many frequent flyer point Indira earn if she traveled from new York city to Berlin ,Germany at a distance of 3,965

Writing
Compare how beaver stole fire and stealing fire from Zeus are the same

Math
Thanks

Math
How many strips of paper 4inches long and 1 inch wide can be cut from a piece of paper 8 inches long and 6 inches wide

Math
Thanks

Math
If there are 12 square tiles and each tile measure 1 foot on each side ,how many non congruent rectangle can you make.Each rectangle must use all 12 tiles

Math
If you h ave an 8 inches long and 36 inches wide strip ,how many strips of wood can you have if it is 4 inches long and 1 inch wide

Math
How many strips of wood can you have from an 8 inches long and 36 inches wide if the strips are 4 inches long 1 inch wide

Math
You will get 6 pieces

Math
How many strips of paper 4 inches long and 1 inch wide can be cut from a piece of paper 8 inches long and 6 inches wide

Math
12 feet

Math
Ms Washington buy a refrigerator that is 6 feet high, 3feet deep and 4 feet wide ,how many floor space does she need to fit the refrigerator

Math
List all 3digit numbers for which the sum of the digit is 3

Math
List all 2 digit numbers for which the sum of the digit is 5

Math
I think it's all the 2 digit numbers that when divided is equal to 5 ,e.g 10,15,20,25,30,35,etc.

Chemistry
How can I find the initial rate of formation of products {mol/((L)(s))}?

Chemistry
I'm getting really high negative percentage numbers.

Chemistry
But @DrBob222 where would I find delta T? Also, mass of water is 250 grams.

Chemistry
Sorry. There are 250.00g of water.

Chemistry
The complete combustion of 1.00 ml of octane increases the temperature by 22.7 degrees celsius. The density of octane is 0.7g/mL. What is the efficiency of the octane in heating the water?

math
t is 6

math
what is 4t=24?

Chemistry 12
Solid phosphorous is found in two forms: white phosphorous (P4) and red phosphorous (P). White phosphorous is the standard state. The enthalpy of the formation of red phosphorus is -17.6kJ. When 32.6 g of white phosphorous reacts to form red phosphorous. What is the enthalpy c...

Algebra 2
Simplify sqrt80 -3 Sqrt63 - sqrt125 - sqrt175

Advanced Functions
How do I verify this identity? (I've tried a lot but it's just not working) (sin2x + sin2y) = 2sin(x+y)cos(x-y)

Physics to be solved
a horizontal scaffold, of length 2.00 m and uniform mass 50.0 kg, is suspended from a building by two cables. The scaffold has dozens of paint cans stacked on it at various points. The total mass of the paint cans is 79.5 kg. The tension in the cable at the right is 837 N. How...

Physics
The driver of a car on a horizontal road makes an emergency stop by applying the brakes so that all four wheels lock and skid along the road. The coefficient of kinetic friction between tires and road is 0.39. The separation between the front and rear axles is L = 4.1 m, and t...

Calculus
evaluate each limit, if it exists [(2+x)^2 - 16]/ (x-2) what do I do?

Chemistry
given: 25.9 kJ + 1/2 H2 + 1/2 I2 => HI how much energy is needed for the reaction of 4.57x10^24 molecules of iodine, I2, with excess hydrogen, H2?

5th grade math
is there more?

5th grade math
13 ways 2q1d0n 2q0d2n 0q0d12n 1q1d5n 1q0d7n 0q6d0n 0q1d10n 1q3d1n 0q3d6n 0q5d2n 0q4d4n 1q2d3n 0q2d8n

5th grade math
how many ways can you use a dime, quarter, and nickel to make .60 cents?

Math
i667(.)photobucket(.)com/albums/vv40/KuroKami444/PG227NO29(.)jpg the image (remove brackets)

Math
use the unit circle to prove that tan(x/2) = (sin(x))/(1+cos(x))

math
y=mx t b ax t by=c ax t by t c= 0 Need every question for all 3 above how do u do these im so confused i need help! thanks 8) Through (4,0) and slope of -1 0) through (4,5) with slope -8 10) through (-2,4) with slope 7 over 3 11)through (-2,-1) with slope of 0 13)through (3,2)...

PreAlgebra
Volume of a cube with side length of 26.4 meters I need this by 11/21/12 ASAP

Chemistry
2.24*10^7

math
Anthony earns an allowance for doing work at home .the first day he earns $1. ,$2. for the next two days,$3.for the next three days and so on and so on.If Anthony keep earning money this way ,on what day will he earn $6.?(2)Anthony saves all the money he earn to buy a $59.99 v...

Physics
That is not the answer. Thats what I thought it was but its not.

Physics
A box is being pushed to the left parallel to the x-axis by a force of 23.0 N. A rope provides a second force of 33.8 N on the box, directed to the right at an angle of 39.0 deg. from the x-axis. What is the magnitude of the net force acting on the box ?

Physical scince
What are the equations for potential and kinetic energy?

math
how do you write the number words for 0.03. Is it three hundredths.(2)and the number words for 0.76,is it seven tenths,six hundredths

math
How do you write the following digit:five thousandths.Does this right,0.005

Physics
A uniform, solid, spherical asteroid with mass 1.2 * 10^13 kg and radius 1.0 km is rotating with a period of 4.6 hours. A meteoroid moving in the asteroid's equatorial plane crashes into the equator at 9.0 km/s. It hits at a 58° angle to the vertical and embeds itself ...

science
i have a science test on monday,but i misplace my paper that i have to study on can you please give me some ideas what to study for photosynthesis

math
3.277, 3.274, 3.27

math
greater.

ap stats-- probability
over a 5 year period of time, 80% of winter days in Philadelphia had an average temperature above freezing. 20% of those days had precipitation. Of the days with an average temperature below freezing, 15% had precipitation. A winter day is chosen at random. Find the probabilit...

5th grade word problems
60

math
which is greater, 100^10 or 10^100? explain reasoning.

Math
How many times larger is 2,300,000 sq. miles than 1,200,000 sq. miles?

Math
What is the percent increase from 91,400,000 to 94,400,000?

gr 9 math
3=3 ..-(P-1) 4

math gr9
b-4....-5 ___ =____ 3.... 1 DONT WORRY ABOUT THE ......

math gr9
1 - (X-1)=4 3

math gr9
2..........1 - = (xt3)= - (x-5) 5..........2 DONT WORRY ABOUT THE DOTS..

math
x-8 ..x plus 4 ___ = ________ 3 .......2

gr 8 math
x-8 x plus 4 ___ = ________ 3 2

math
2 - = (xt3) 5 its one qustionput it together 1 = - (x-5) 2

sfdsgfdsgg
2 1 - = (xt3)= (x-5) 5 2

math
2 1 - = (xt3)= - (x-5) 5 2

math
2 1 - = (xt3)= - (x-5) 5 2

math
3(2K-5)-K=4-(3K plus 7)

math
Jenifers flower bed is in the shape of a right angle triangle. The shortest side is one/forth of the second shortest side. if the area is 18sqaured what are the lengths of all three sides? I NEED A ANSWER ASAP! PLEASE I NEED ALL THREE SIDES. NOT 2.. :p

math
Jenifers flower bed is in the shape of a right angle triangle. The shortest side is one/forth of the second shortest side. if the area is 18sqaured what are the lengths of ALL THREE SIDES? I NEED A ANSWER ASAP! PLEASE

zmathh
but it needs the 3 sides..

zmathh
Jenifers flower bed is in the shape of a right angle triangle. The shortest side is one/forth of the second shortest side. if the area is 18sqaured what are the lengths of all three sides? I NEED A ANSWER ASAP! PLEASE

math
Jenifers flower bed is in the shape of a right angle triangle. The shortest side is one/forth of the second shortest side. if the area is 18sqaured what are the lengths of all three sides? I NEED A ANSWER ASAP! PLEASE

math
Jenifers flower bed is in the shape of a right angle triangle. The shortest side is one/forth of the second shortest side. if the area is 18sqaured what are the lengths of all three sides? I NEED A ANSWER ASAP! PLEASE

math
2) Sven sells hamburgers at a ballpark. He earns $7.50/hour, plus $0.40 for each hamburger he sells. b) How many hamburgers must Sven sell to earn $100 in a 6.5 shift? How many hamburgers must Sven sell to earn $100 in a 6.5 shift?

algebra
I'm not really getting this. complete the table. Linear system: 4x+4y=-4 x: 0,1,2

Physics
An engine block of mass M is on the flatbed of a pickup truck that is traveling in a straight line down a level road with an initial speed of 25 m/s. The coefficient of static friction between the block and the bed is μs = 0.566. Find the minimum distance in which the tru...

cheistry
Correct i got a 100%

Ms. Sue help!!!
5th

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