Saturday

February 25, 2017
Total # Posts: 1,833

**english**

oh well i think it is 4

*February 24, 2017*

**english **

which set of words, below could be used to describe the disperal of seeds to a new region 1.wings, legs, migration 2.invasive, exotic, continental drift 3.biogeography, adaptation, survival, 4.wind, water, animal feces and if you know the rest can you help me

*February 24, 2017*

**Physics**

The lecturer with a monotone voice of 440 Hz and you are both 2m away from the long, smooth and tall wall.You will hear sound that comes directly to you from the lecturer along with sound that comes back from the wall on it’s way to reaching you.You need the path here ...

*February 24, 2017*

**Math**

Country A has a population of 102.4 million people and total land area of about 150.7 thousand square miles. What is the population density (the # of people per square mile?

*February 22, 2017*

**math**

a boy noticed that the end of the 3.5m shadow, the top of his head and the top of a 28m tall tree are in a straight line. if he is 1.5m tall, how far is he from the tree?

*February 16, 2017*

**Physics**

1) Imagine you were to walk 12 km 25 degrees North of East. If you could only walk south and west to get back to the point that you started from, how far would you have to walk? 2) An airplane has a velocity of 70 m/s [50 degrees W of N] with respect to the air. A person on ...

*February 16, 2017*

**mrps**

Before taking her final test, Tammys mean was 88% If she scores 68% on the final, her mean will be 86%. However, if she scores 98% on the final test, her mean will be 89%. How many test will Teresa takes in total.

*February 7, 2017*

**Math**

The average atomic weight of all elemons in the periodic tabe is 134.355 unidied atomic mass uints.

*February 1, 2017*

**english **

Except for Ronnie and ______, everyone was on time. him**** he Between you and ___, I know the answer to the mystery I**** me Leave your message with Ms. Hirioka and ______ me I**** It was Geraldine Ferraro______ ran for vice president in 1984. who*** whom with _______ did you...

*January 18, 2017*

**Calculus**

What is the largest possible product of two non-negative number whose sum is 1

*January 8, 2017*

**calculus**

oh I'm sorry the problem actually say two non-negative numbers I misread the problem

*January 8, 2017*

**calculus**

What is the largest possible product of two negative number whose sum is 1?

*January 8, 2017*

**calculus**

is my answer to this question correct A spherical balloon is losing air at the rate of 2 cubic inches per minute. How fast is the radius of the ballon shrinking when the radius is 8 inches. Answer= .0024

*January 8, 2017*

**calculus**

A spherical balloon is losing air at the rate of 2 cubic inches per minute. How fast is the radius of the ballon shrinking when the radius is 8 inches.

*January 8, 2017*

**Algerbra**

Mark has made a clay model. He will now make a clay statue that is mathematically similar to the clay model. The model has a base area if 6cm^2. The statue will have a base area of 253.5cm^2. Mark used 2kg of clay to make the model. Clay is sold in 10kg bags. Mark has to but ...

*January 3, 2017*

**Surfaces of cones **

The diameter of the base of the cone is 24x cm. The height of the cone is 16x cm. The curved surface area of the cone is 2160pi cm^2. The volume of the cone is V pi cm^3, where V is an integer. What is the value of V. Answer is cm^2. Thanks a lot.

*January 3, 2017*

**physics**

a cannon of mass 400kg fires a shell of mass 20kg. if the shell leaves the cannon at 300ms^-1, with what velocity does the cannon recoil? an a- particle is emitted from a polonium nucleus at a speed of 1.8 x 10^7 ms^-1. the relative masses of the a- particle and the remaining ...

*December 14, 2016*

**5th grade math**

rtr

*December 7, 2016*

**Math**

Kevin takes 8 hours to mow 6 lawns. At this rate, how many lawns could be mowed in 32 hours

*December 5, 2016*

**math**

z value of 1st test = [72-60]/8 = +1.5 z value of 2nd test = [80-75]/6 = +0.83 Thus the 1st test mark is better is this right ??

*December 4, 2016*

**math**

Eldon received 72 on his first calculus test. The marks were normally distributed with a mean of 60 and a standard deviation of 8. He received 80 on the next test, which was normally distributed with a mean of 75 and a standard deviation of 6. Which was the better mark, ...

*December 4, 2016*

**math**

The Following Table gives the sales for the Sasquatch Men's Shoe store: Shoe Size , Frequency (number of pairs sold) 4 , 8 5 , 12 6 , 31 7 , 50 8 , 58 9 , 46 10 , 37 11 , 14 12 , 11 1)determine the mean for the distribution, correct to 2 decimal places. 2) Determine the ...

*December 4, 2016*

**PHYSICS (REALLY DIFFICULT PLEASE HELP)**

At a temperature of 18.0°C of 23.0cm^3 of a certain gas occupies has pressure of 103 kPa. (a) What volume would the gas occupy at a temperature of 0.00°C and pressure of 101kPa? (b) 1.00 moles of a certain gas occupies a volume of 22.4 litres at 0.00°C and 101325 ...

*December 4, 2016*

**math**

is it 5.44 ?

*December 3, 2016*

**math**

Thank you, for this question? determine the standard deviation, correct to 2 decimal places.

*December 3, 2016*

**math**

267? 9 =29.666

*December 3, 2016*

**math**

to find the mean, would i go 4x8x5x12x6x31x7x50x8x58...... / 100 ?

*December 3, 2016*

**math**

apply the formula for the given data.

*December 3, 2016*

**math**

The Following Table gives the sales for the Sasquatch Men's Shoe store: Shoe Size , Frequency (number of pairs sold) 4 , 8 5 , 12 6 , 31 7 , 50 8 , 58 9 , 46 10 , 37 11 , 14 12 , 11 1)determine the mean for the distribution, correct to 2 decimal places. 2) Determine the ...

*December 3, 2016*

**math**

a) total ways of drawing any 4 = 12c4 = 495 b) = 462/495

*December 3, 2016*

**math**

a) from a to of 12 flatres, 4 are selected at random. if the lot contains 4 defective flares (flares that wilt fire), what is the probability that all 4 will not work? B) what is the probability that at most 2 will not work?

*December 3, 2016*

**math**

you are dealt 13-card bridge hand from a 52-card bridge deck. what is the probability that you will be dealt exactly 5 hearts? what is the probability that you will dealt at list 2 hearts? what is the probability that you will receive 5 hearts, 4 clubs, 2 diamonds, and 1 spade?

*December 3, 2016*

**Physics**

a stationary 25 kg object is located on a table near the surface of the earth. The coefficient of static friction between the surface is 0.50 and of kinetic friction is 0.30.

*December 2, 2016*

**Physics**

Hi, I've been having trouble with this physics problem. I'm not sure where to begin. A brick with mass m1=2.5 kg can move without friction on a horizontal plane. The brick is attached to a wall by an ideal spring with spring constant k=2300 N/m. A second brick with ...

*November 29, 2016*

**Physics**

A plank 3m long and having a mass of 20kg is supported at its ends. Imagine that a person with a mass of 50 kg stands m from one end. What are the magnitudes of the force exerted by the supports?

*November 26, 2016*

**Linear Programming**

A farmer is going to divide her 60 acre farm between two crops. Seed for crop A costs $20 per acre. Seed for crop B costs $10 per acre. The farmer can spend at most $700 on seed. If crop B brings in a profit of $60 per acre, and crop A brings in a profit of $180 per acre, how ...

*November 23, 2016*

**Physics**

Three boxes are lined up so that they are touching each other as shown in the figure below. Box A has a mass of 30.0 kg, box B has a mass of 45.0 kg, and box C has a mass of 75.0 kg. An external force (F) pushes on box A toward the right, and the force that box B exerts on box...

*November 20, 2016*

**Physics**

A car is proceeding at a speed of 12.0 m/s when it collides with a stationary car in front. During the collision, the fist car moves a distance of 0.300 m as it comes to a stop. The driver is wearing her seat belt, so she remains in her seat during the collision. The driver&#...

*November 20, 2016*

**History**

Can Someone Please Tell Me The Answers!!! course picture Modern US History A-1 SOH Course Links ? profile picture Joshua Whitmire Unit 2 Test Unit 2: Immigration and Migration > Unit Assessments 1. Why were many Native Americans opposed to settling in reservations? They ...

*November 16, 2016*

**Algebra**

Three fourths of a number increased by 4 is at most 19

*November 9, 2016*

**math**

I understand , but when you plug in the x and y in and I get y' =0 so would that be my slope?

*November 6, 2016*

**math**

Find the equation of the tangent line to the graph of (x+y)^3=27x at the point (1,2)

*November 6, 2016*

**math**

A melting snowball has a radius that decreases 1/4 inch per hour.?Find the rate of change of the volume with respect to time when the radius is 4in ?

*November 6, 2016*

**Calculus**

let a_i = 2^i 20 Find ? a_(i+1)-a_i i=1

*November 4, 2016*

**Physics**

Two boxes are stacked in an elevator that is accelerating downwards at 3.49m/s/s. A smaller 3.06kg box is on top and a larger 9.93kg box is on bottom. Find the magnitude and direction of the force that the smaller mass exerts on larger.

*November 4, 2016*

**calculus**

A car is traveling west at 67 mi./hr and a truck is traveling south at 59 mi./hr. Both are headed for the intersection of the two roads. At what rate are the car and truck approaching each other when the car is 0.2 mi. and the truck is 0.5 mi. from the intersection?

*October 26, 2016*

**Math**

If divided by 7. The remainder is 3. If divided by 4, the remainder is 0. It is less than 30

*October 26, 2016*

**Physics**

A 1300 kg car traveling at a steady speed of 15 m/s initially due northwest round a corner so that after 10s, it is traveling due northeast. What is the magnitude and direction of the net force that must be acting on the car at the instant it is traveling due north?

*October 25, 2016*

**Chemistry**

When 26.16 g of iron is heated in the presence of excess chlorine gas, they will react to form 76.08 g of a compound called ntaining these 2 elements. If the molar mass of this compound is 644 g/mil find the molecular formula.

*October 23, 2016*

**Physics**

A 350-kg disk-shaped non-rotating satellite gets hit by a 5-g piece of space debris moving at 1.5 km/s. If the debris buries itself near the satellite’s rim, how rapidly will the satellite rotate after the hit?

*October 23, 2016*

**Math**

Luke receives a salary of $200 per week plus a 3% commission on all sales. Last week he sold $2,100 in merchandise. How much did he make that week?

*October 21, 2016*

**Math**

which number is greater than 5.5 x 10^-7 and less then 5.5 x 10^7? a. 1.8 x 10^-12 b. 6.7 x 10^8 c. 5.2 x 10^3 d. 3.9 x 10^-8

*October 21, 2016*

**Chemistry**

anyone i need help

*October 20, 2016*

**Chemistry**

i need help making an acrostic poem using the word nonmetal

*October 20, 2016*

**math**

Twice the difference of a number and 4 is less than or equal to 17 .

*October 12, 2016*

**Statistics and**

In a survey of 144 pet owners, 31 said they own a dog, and 91 said they own a cat. 14 said they own both a dog and a cat. How many owned neither a cat nor a dog?

*October 8, 2016*

**Math**

What is 0.26 written as a fraction in simplest form? 26/100 13/50 26/10 13/25

*October 6, 2016*

**Algebra**

How do I work -3-5(3x+7)=0

*October 3, 2016*

**Physics**

Block A (Mass = 2.319 kg) and Block B (Mass = 1.870 kg) are attached by a massless string as shown in the diagram. Block A sits on a horizontal tabletop. There is friction between the surface and Block A. The string passes over (you guessed it) a frictionless, massless pulley...

*September 25, 2016*

**Physics**

A cheetah can maintain its maximum speed of 29.5 m/s for only 35.3 seconds. What is the maximum distance a gazelle running at 26.2 m/s must be ahead of the cheetah to have a chance of escaping?

*September 25, 2016*

**Calc BC (Rates of change and tangent lines)**

1 / (x - 1) at x = 2 What is the slope of the curve?

*September 15, 2016*

**Algebra**

Hello, I need help solving a equation. I'm not sure how to solve it. The equation is: 14+(d/4)=17

*September 7, 2016*

**Math College 115**

c) 1000-250t minu b/c it DEPRECIATES

*September 4, 2016*

**algebra**

A typical acoustic guitar has a range of three octaves. When the guitar is tuned to “concert pitch,” the range of frequencies for those three octaves is between 82.4 Hz and 659.2 Hz inclusive. Write a compound inequality to show the frequencies that are within the ...

*September 4, 2016*

**Math**

The park had initially planned to charge $8 for admission and expected to have 2400 visitors a day. Allison and Juan were assigned the task of analyzing the park's admission revenues. 1.a)How much revenue would the park have for one day at the current price? b)They have ...

*July 28, 2016*

**physics**

A stone is projected vertically upwards with a speed of 30ms from the top of a tower of height 50m. Neglecting air resistance determine the maximum height it reached from the ground.[g=10ms^2]

*July 26, 2016*

**Physics**

A body accelerates uniformly from rest and covers a distance of 180m in 6s. Calculate the magnitude of its acceleration. . solution S=ut+1/2at^2 180=0x6+1/2xax6^2 180=0+a/2x6^2 180-0=36a/2 180=36a/2 180x2=36a 360=36a 360/36=36a/36 10ms^-2=a acceleration is 10ms^-2

*July 26, 2016*

**C++**

My assignment: 1- Rewrite your C++ program in Project 1 to compute the number of words, average length and lengths of the words in the text file words.txt – the input file. Each line in the input file contains exactly one word. The words in the input file are sorted ...

*June 30, 2016*

**Math**

Suppose that you are offered a job with a 6,600 salary a month with guaranteed increase of 50 every 6 months for 5 years. What will your salary be at the end of this period of time?

*June 27, 2016*

**math**

2nd term = 24 5th term = 3 24-3 = 21 5-2 = 3 21/3 = 7 common difference = -7 since the terms are decreasing so to find the first term, subtract -7 from 24 so the first term is equal to 31

*June 27, 2016*

**science**

1-Pentene or Pent-1-ene

*June 13, 2016*

**Math**

You order twelve burritos to go from a Mexican restaurant, five with hot peppers and seven without. However, the restaurant forgot to label them. You pick three burritos at random. Find the probability of the events (as a reduced fraction and as a percent rounded to the ...

*June 6, 2016*

**pRE calc**

A Determine the location of the turning pints for the cubic y= x^3 - 3x^2 +2x+10 B) Use the fact that a cubic is symmetric about its point of inflection to determine the location of the pint of inflection of the cubic in part (a)

*May 17, 2016*

**Pre calc**

A) Determine the location of the turning pints for the cubic y= x^3 - 3x^2 +2x+10

*May 17, 2016*

**math**

Is the relationship between the variables in the table direct variation, inverse variation, both, or neither? If it is a direct or inverse variation, write a function to follow it. X:2 5 20 40 Y:40 20 5 2 ANSWERS AVAILABLE TO CHOSE: A) NEITHER B) INVERSE VARIATION Y=20/X C)...

*May 17, 2016*

**Math**

If x>0 and 2x^2+3x-2=0 what is the value of x?

*May 13, 2016*

**6th grade math**

your the best ms sue

*May 12, 2016*

**math**

Forgot to add the answers I came up with: Smaller tire: 38 Larger tire: 127

*May 7, 2016*

**math**

Bicycles in the late 1800s looked very different than they do today. There's a larger tire with a diameter of 60 in and a smaller tire with a radius of 9 in. How many rotations does each tire make after traveling 600 feet? Round your answers to the nearest whole number. ...

*May 7, 2016*

**math**

Sam Seller offers credit at 19% interest per year. To the nearest tenth, APR = ?

*May 2, 2016*

**math**

1.A wind turbine has blades 50m in diameter and an overall height of 125m. If it has four blades instead of three, create four equations modelling the height of a point on the tip for each of the four blades. 2.Create a sine equation for the height of a point as shown below. ...

*April 25, 2016*

**Science/Math**

A car is travelling at a speed of 30.0m/s encounters an emergency and comes to a complete stop. How much time will it take for the car to stop at -4.0m/s^2

*April 22, 2016*

**Chemistry**

t takes 572 kJ of energy to decompose 2.00 mol of liquid water. How much energy does it take to decompose 54.0 mol of water? 2H2O(l)+572kJ→2H2(g)+O2(g)

*April 18, 2016*

**Chemistry**

The estimated proven world oil reserves in 2013 were 1526 billion barrels. The world annual rate of use was 32.6 billion barrels. How long will these reserves last if this rate of use continues? (The rate of use is actually likely to increase.)

*April 18, 2016*

**Chemistry**

Burning 2.00 mol of hydrogen releases 483.6 kJ of energy. Determine how much energy, in kilojoules, must be supplied to convert 5.00 mol of water vapor into hydrogen gas and oxygen gas.

*April 18, 2016*

**Chemistry**

Calculate the number of moles Fe2O3 in 2.37x10^21 atoms of Fe2O3?

*April 12, 2016*

**Chemistry**

Radium-223 has a half-life of 11.4 days.Approximately how long would it take for the activity of a sample of 223Ra to decrease to 2.00 % of its initial value?

*April 8, 2016*

**Chemistry**

If it takes 45 days for 80.0 mg of a particular radioactive isotope to decay to 10.0 mg what is its half-life?

*April 8, 2016*

**Chemistry**

A radionuclide undergoes alpha emission, and thorium-234 is produced. What was the original radionuclide?

*April 8, 2016*

**Chemistry**

Radium-223 nuclei usually decay by alpha emission. Once in every billion decays, a radium-223 nucleus emits a carbon-14 nucleus. Write a balanced nuclear equation for alpha emission. Write a balanced nuclear equation for carbon-14 emission.

*April 8, 2016*

**Math**

The temperature went from 83'F at noon to 72'F at midnight. What is the percent of decrease in the temperature from noon to midnight?

*April 4, 2016*

**math help pls pls pls**

its c c:

*March 18, 2016*

**Microeconomics**

You are asked to examine the market for luxury housing in the southern Westchester town of Quietville. This kind of housing is said to be a normal good. In Quietville a substantial proportion of the people who buy luxury homes are people who work in the financial sector on ...

*March 14, 2016*

**Chemistry**

I need help on this question. Identify the mistakes in the following balanced equations. Rewrite the equation to make it correct. Each question has one mistake to correct. a) C9H20+12O2 -> 9CO2 + 10H2O b) H2+Cl -> 2HCl

*March 13, 2016*

**Common core standard. math**

Consuelos living room is in the shape of a rectangle and has an area of 360 square feet. The width of the living room is 5/6 it's length. What is the length of living room?

*March 8, 2016*

**Physics**

A 600W flashlamp fitted to a camera is operated by discharging a 10 000 uF capacitor through the lamp. The capacitor is charged initially from a 6V battery. Calculate A) the energy stores in the capacitor when fully charged B) the duration of the flash

*February 11, 2016*

**chemistry**

an ezyme -catalysed reaction was carried out in a solution buffered with 0.05 M phosphate ph 7.2 . As a result of the reaction ,0.06M of acid was formed. (phosphoric acid has three pka values. The one required for this calculation is pka2=7.2). 1) what was the pH at the end of...

*January 12, 2016*

**Language arts**

Ohh

*January 11, 2016*

**Science**

So the oceans would gravitate to other locations, altering the geography of the planet and the tides would be weaker? or would the tides be stronger, or remain the same?

*December 18, 2015*

**Science**

This is an actual question on my homework...

*December 18, 2015*