Monday

July 25, 2016
Total # Posts: 98,415

**Calculus1**

The radius of a sector of a circle is increasing at a rate of 3 cm/sec while the area is decreasing at a rate of 1 cm2/sec. At what rate is the angle of the sector changing when the area is 20 cm2 and the radius os 5cm?
*July 15, 2016*

**Data Analysis with spreadsheets with Lab**

Using the IF function. You have a list of contracts and due dates for annual maintenance fees. You wish to determine when you have a contract due in the next 45 days and provide a note that warns you that the payment is due".
*July 15, 2016*

**Data Analysis with spreadsheets with Lab**

You wish to calculate the total pay for an employee who receives regular time for 40 hours, time and a half for 40-50 hours, and double time for over 50. Using the IF function. Please help
*July 15, 2016*

**Physics**

Determine the magnitude of current I3. Let the voltage of the bottom battery VB =13.0 volts and r= 1.0 Ω.
*July 15, 2016*

**Math**

2 x-1!=0, y = x/(2 x-1) != means doesn't equal.
*July 15, 2016*

**Health**

examples of situations displaing positive stress.
*July 15, 2016*

**science**

ALSO... Is the 36,000 km the radius of the orbit or is it the height of the satellite from Earth's surface? If it's the radius of the orbit, then ... R = orbital radius = 36,000 km = 36,000,000 m Since the orbit is specified as being circular, then ... C = ...
*July 15, 2016*

**science**

Since it's a satellite in the question is it moving in a circular motion?
*July 15, 2016*

**science**

a satellite is moving in 36000km if it takes 24 hour what will be the speed?
*July 15, 2016*

**science**

what is the equation for velocity?
*July 15, 2016*

**science**

which physical quantity is given under the area of velocity time graph?
*July 15, 2016*

**Physics**

1. Volume flow rate of the blood being circulated 2. How the ear drum vibrates when sound waves interact with it
*July 15, 2016*

**physics**

A rope of mass M and length L is being rotated about one end in a gravity free space. A pulse is being created at one of the ends. The angle through which rope will be rotated in the time when pulse reaches the opposite end of rope for first time and for the angular velocity ...
*July 15, 2016*

**Math**

There are 7girls in front of amarda and 3girls after her
*July 15, 2016*

**Math**

There are 7girls in front of amarda and 3girls after her
*July 15, 2016*

**English**

Q1) No. 1-1 should read: Het took two pictures of the mountain. The rest are grammatically correct Q2) yes Q3) yes
*July 14, 2016*

**Data Analysis with spreadsheets with Lab**

Using the IF function calculate the commission on sales. The commission is 6% on all sales that are at least 20% above cost.
*July 14, 2016*

**Math**

A taco stand sells tacos with any three ingredients for a flat price of $1.25. Additional ingredients cost $0.50 each. There are ten different possible ingredients. How many different types of tacos costing $2.25 can be made at the stand? A. 160 B. 252 C. 345 D. 452 E. 610
*July 14, 2016*

**Math**

A taco stand sells tacos with any three ingredients for a flat price of $1.25. Additional ingredients cost $0.50 each. There are ten different possible ingredients. How many different types of tacos costing $2.25 can be made at the stand? A. 160 B. 252 C. 345 D. 452 E. 610
*July 14, 2016*

**MATH**

correct it is false.
*July 14, 2016*

**Math**

A record playa with a speed of 33 1/3 revolutions per minute, meaning that a needle in a groove around te edge of the record will make 33 and 1/3 circuits around the record in one minute. If the diameter of the record is 40 centimeters, how many centimeters does the needle ...
*July 14, 2016*

**MATH**

if log_a 3 = log_b 27 then show that b=a^3 log_a mean log base a.
*July 14, 2016*

**Math**

A record playa with a speed of 33 1/3 revolutions per minute, meaning that a needle in a groove around te edge of the record will make 33 and 1/3 circuits around the record in one minute. If the diameter of the record is 40 centimeters, how many centimeters does the needle ...
*July 14, 2016*

**Math(help please)**

Alexis has a pencil bag containing one of more of each of the following: red pens, blue pens, mechanical pencils, and black markers. He knows that there is a 4% chance he will pull a red pen out of the bag if he chooses randomly. What is the number of total pens, pencils, and ...
*July 14, 2016*

**Health**

What do obesity trends presented by surveillance systems help with? present trends in colorful, creative maps change behavior about the obesity problem in the U.S. they do not tell us much raise awareness about the obesity problem in the U.S. C?
*July 14, 2016*

**MATH**

What f-1(x) of f(x)=(1/3)^x
*July 14, 2016*

**health communication**

For your communication intervention, you are trying to get young mothers in a developing country to use more nutritious complementary food for their infants. You find that their mothers-in-law make most of the decisions, so you try to convince them first that this a good idea ...
*July 14, 2016*

**Math**

If I travel 200 feet in 2.92 seconds what is speed I'm traveling at
*July 14, 2016*

**homework**

The number of bacteria in a certain population increases according to a continuous exponential growth model, with a growth rate parameter of 3.9% per hour. How many hours does it take for the size of the sample to double?
*July 14, 2016*

**algebra**

A ball is launched from a slingshot. Its height, h(x), can be represented by a quadratic function in terms of time, x, in seconds. After 1 second, the ball is 148 feet in the air, after 2 seconds the ball is 272 feet in the air. Find the height in feet of the ball after 6 ...
*July 14, 2016*

**Math (PLEASE HELP!)**

A ferris wheel has a radius of 13 m. It rotates once every 24 seconds. A passenger gets on at the bottom of the wheel from a ramp which is one metre above ground level. a) If the height of the passenger is measured from the ground, determine an equation for the height of the ...
*July 13, 2016*

**Math (PLEASE HELP!)**

Thank you so much.
*July 13, 2016*

**Math (PLEASE HELP!)**

How do you solve sin2θ−cosθ=0 between -pi/2 less than or equal to θ less than or equal to 3pi/2?
*July 13, 2016*

**statistics**

If 6 bass are randomly selected from Clear Lake, find the probability that the mean weight is greater than the mean of those you caught
*July 13, 2016*

**Math (PLEASE HELP!)**

A ferris wheel has a radius of 13 m. It rotates once every 24 seconds. A passenger gets on at the bottom of the wheel from a ramp which is one metre above ground level. a) If the height of the passenger is measured from the ground, determine an equation for the height of the ...
*July 13, 2016*

**chemistry**

How much heat is produced by the complete combustion of 287 g of CH4? CH4(g)+2O2(g)→CO2(g)+2H2O(g)ΔH∘rxn=−802.3kJ
*July 13, 2016*

**maths114**

A chord xy of a circle of radiuns 14cm subtends angle of 60 degree at the centre. find the area of major segment.
*July 13, 2016*

**maths 114**

find area of major segment
*July 13, 2016*

**math**

Write 3.027 in expanded form
*July 13, 2016*

**English composition**

That's a classification and division prewriting it's not an essay
*July 13, 2016*

**Algebra**

How do u work out how much fence is needed for area of 100m2
*July 13, 2016*

**tle**

the surface temperature of ranges from 173 degrees celsius to 410 degrees celsius find its equivalent temperature in the fahrenheit scale.
*July 13, 2016*

**Math**

2x+9square root of x-5=0
*July 12, 2016*

**pre cal**

Solve the following inequality. Write the answer in interval notation. x^4>4x^2
*July 12, 2016*

**pre cal**

thx could not find it
*July 12, 2016*

**pre cal**

Suppose the speed of sound is c, and gravity is g. If you throw a rock from an initial height h0 and with an initial velocity v0 the height h(t) of the rock after time t is h(t)=−g2t^2+v0t+h0. (The height is negative when the rock is below ground level. Thus you can ...
*July 12, 2016*

**math**

Emmanuel wants to tile his rectangular floor. one of which is larger than the other. a)what area will be covered by the "8x8"tile? "16x16" tile?
*July 12, 2016*

**science**

how to remove blue color from ammonium sulfate solution which occurs dues copper content in the spent acid we generate
*July 12, 2016*

**pre cal**

NASA launches a rocket at t=0 seconds. Its height, in meters above sea-level, as a function of time is given by h(t)=−4.9t^2+115t+220. Assuming that the rocket will splash down into the ocean, at what time does splashdown occur? The rocket splashes down after ? seconds. ...
*July 12, 2016*

**agebra**

The graph represents the normal distribution of recorded weights, in pounds, of cats at a veterinary clinic. Which weights are within 2 standard deviations of the mean? Check all that apply.
*July 12, 2016*

**pre cal**

i still don't get it :(
*July 11, 2016*

**Psychology**

Psychics and astrologers are characterized as...
*July 11, 2016*

**Math**

The temperature deceased due to increase in altitude at the rate of 8 degrees Celsius per 1500 m the temperature at 4500 m above the ground level is 4 degrees Celsius find the temperature at ground level and at an altitude of 9000 m
*July 11, 2016*

**statistics**

If P(A)=11/13, find P(Ā) Find the indicated probability
*July 11, 2016*

**chemistry**

QUESTION 11 Ammonia gas is formed from nitrogen gas and hydrogen gas, according to the following equation: N2 (g) + 3H2 (g) Imported Asset 2NH3 (g). If 84.0 g of nitrogen gas is allowed to react with an excess of hydrogen gas to produce 85.0 g of ammonia, what is the percent ...
*July 11, 2016*

**chemistry**

QUESTION 10 Ammonia gas is formed from nitrogen gas and hydrogen gas according to the following equation: N2 (g) + 3H2 (g) Imported Asset 2NH3 (g). If 112 grams of nitrogen gas is allowed to react with an excess of hydrogen gas to produce 120 grams of ammonia, what is the ...
*July 11, 2016*

**chemistry**

QUESTION 9 The number of moles of the reagent in excess can be used to calculate the moles of the products of the reaction. TRUE FALSE
*July 11, 2016*

**chemistry **

When magnesium metal and an aqueous solution of hydrochloric acid combine, they produce an aqueous solution of magnesium chloride and hydrogen gas. Using the equation, Mg (s) + 2HCl (aq) Imported Asset MgCl2 (aq) + H2 (g), if 72.9 g of Mg and 146.0 g of HCl are allowed to ...
*July 11, 2016*

**chemistry **

When magnesium metal and an aqueous solution of hydrochloric acid combine, they produce an aqueous solution of magnesium chloride and hydrogen gas. Using the equation, Mg (s) + 2HCl (aq) Imported Asset MgCl2 (aq) + H2 (g), if 72.9 g of Mg and 146.0 g of HCl are allowed to ...
*July 11, 2016*

**math**

what number whose sum of its digit is 26 becomes 6000 when rounded to the nearest thousand.
*July 11, 2016*

**geometry**

Find the measure of one exterior angle of a regular polygon that has 21 sides. Round your answer to one decimal place. m∠exterior angle
*July 11, 2016*

**science**

what are some examples of suspension?
*July 11, 2016*

**chemistry**

If chlorine and fluorine react according to the reaction (to balance): Cl2+ F2→ ClF3 And calculate the amount of product and of limiting reagent that remains, when 10 g of chlorine and 30 g of fluorine are reacted to give chlorine trifluoride.
*July 11, 2016*

**MPA**

Searches related to hOW PRICE DISCRIMINATION TEND TO MORE COMMON IN THE SALE SERVICE
*July 11, 2016*

**chemistry**

reaction yield=(actual yield÷theoretical yield)*100%
*July 11, 2016*

**chemistry**

For combustion of 10 grams of C4H10 excess of O2, You are obtained 25 grams of CO2 according to the reaction (to balance): C4H10+ O2→ CO2+ H2O Calculate the reaction yield of the reaction. please,could anyone help me to solve this problem.
*July 11, 2016*

**Math **

The Abc company sells bottles of shampoo for $9 each. It costs the company $3 to make each bottle and they have fixed costs of $4700 each month. If x represents the number of bottles the company makes and sells each month, write he company's profit function
*July 10, 2016*

**Math **

A company selling cell phones has a total inventor of 800 phones. Of these phones, 400 are smartphones and 240 are black. If 200 phones are not black and not a smartphones, how many are black smartphones?
*July 10, 2016*

**Math**

Bobs car gets 23 miles per gallon of gas. If bobs car is traveling at a constant rate of 69 miles per hour, how may gallons of gas will his car use in 40 minutes?
*July 10, 2016*

**chemistry**

In the gaseous phase PCl5 dissociates according to the following equilibrium: PCl5⇌PCl3+Cl2 and Kc=0.8 at 613K .Determine the equilibrium composition when 0.12 moles/L of the three compounds are mixed at 613K.
*July 10, 2016*

**chemistry**

100 mL of 0.05 M NH3 solution are added to 60 mL of a 0.1 M solution of the same compound.Determine the concentration of the final solution.
*July 10, 2016*

**Pre-Calculus 11**

I don't know how to solve this... Question: Suppose 5/7ã3/2 is written in simplest form as aãb, where a is a real number and b is an integer. What is the value of b? (The square root is over the whole fraction of 3/2) A 2 B 3 C 6 D 14 I think it ...
*July 9, 2016*

**Pre-Calculus 11**

I don't know how to solve this... Question: Suppose 5/7ã3/2 is written in simplest form as aãb, where a is a real number and b is an integer. What is the value of b? (The square root is over the whole fraction of 3/2) A 2 B 3 C 6 D 14 I think it ...
*July 9, 2016*

**math 10**

Dan and Leanne's mortgage payments takes 2/3 of Dan's take home pay every month. His cheque is $785.50 in the middle of the month and $739.50 at the end of the month. Give the amount of the monthly mortgage payments.
*July 9, 2016*

**phyics**

1000/4 = 250 seconds 250/60 = 25/6 minutes
*July 9, 2016*

**Math**

Rewrite 47.10° in radian measure. Round to three decimal places. a. 0.164 b. 0.099 c. 0.822 d. 0.123 e. 0.148
*July 9, 2016*

**Maths**

The sum of a two digit number is 8 .The digit in the units palce is1 more than six times the digit in tens place .Find the number
*July 9, 2016*

**geometry**

Roy, Aaron, and Pete are given three identical rectangular blocks. They slice their blocks in different ways to get two equal halves. The resulting cross section in each of the three blocks is a
*July 9, 2016*

**RIFT VALLEY UNIVERSITY COLLEGE**

Hhfggfg
*July 9, 2016*

**physics**

2 pi r = 177 so r = 177/(2 pi) then tan 45.6 = h/r so h = r tan 45.6
*July 9, 2016*

**science**

37. The temperature at sea level on the windward side of a mountain is 28 °C and the dewpoint is 18 °C. What is the LCL?
*July 8, 2016*

**Physics**

speed: v = 30 + a t what is a when v = 0 -30 = a t a = -30/t distance: 70 = 30 t + (1/2) a t^2 70 = 30 t -(15/t) t^2 70 = 15 t t = 14/3 seconds to stop a = -30/t = -90/14 m/s^2 = -45/7 then F = m a F = -600 (45/7) Newtons
*July 8, 2016*

**Math**

Unit rate or unit cost -Driving 240km in 4 hours -$22.80 for 3 hours of work What is the answer
*July 8, 2016*

**maths**

I need a two digit number which after reversi
*July 8, 2016*

**Chemistry**

How many mol of hydrogen present in 16g methane
*July 8, 2016*

**english**

how does walter counter hub's defensiveness in secondhand lions
*July 8, 2016*

**chem**

why is Na+ reactive. doesn't it have an octet making it happy
*July 8, 2016*

**VECTOR HELP URGENT**

.... and no need for placing them head to tail by the way.
*July 7, 2016*

**PreCalculus 1**

I have graphed the equations onto my calculator but I don't know how to answer the questions. Can someone explain this to me? 2. Coco, the wonder cat, is watching a spider on a wall that is 18 feet wide and 12 feet tall. The spider moves along for 10 seconds along a path ...
*July 7, 2016*

**PreCalculus 1**

Please help me answer this question. I have finished the other two parametric equations on my own, but I am confused as to how to do this one. 4. A ball is hit at an angle of 17¢X. The ball is hit when it is 2.5 feet above the ground and is hit at a velocity of 136 feet ...
*July 7, 2016*

**physics**

A child pulls a wagon with a force of 58 N by a handle making an angle of 27 degrees with the horizontal. If the wagon has a mass of 4.5 kg, to the nearest hundredth of a m/s2 what is the acceleration of the wagon
*July 7, 2016*

**Geometry**

Find the slope and y-intercept of 6x-3y=9
*July 7, 2016*

**ENGLISH LANGUAGE**

EASSY ON ONCE BITTEN TWICE SHY
*July 7, 2016*

**Physics**

I assume that the mass is going up at constant speed. Therefore the force is m*g up to balance the weight of m*g down. Power is another thing entirely, energy per unit time.
*July 7, 2016*

**algebra2**

lukik65j
*July 7, 2016*

**algebra2**

A farmer counted the number of cows and chickens by counting heads and legs. If he counted 35 heads and 78 legs, how many cows and how many chickens did he have?
*July 7, 2016*

**math**

Given that the range of a polynomial function is {y | y <= 5, y ER}, do you have enough information to make any conclusions about the leading coefficient or degree? (er is all real numbers)
*July 7, 2016*

**math**

P(x)=2x^3-mx^2+9x-11
*July 7, 2016*

**math**

For what value of 𝑚 will the polynomial 𝑃(𝑥) = 2𝑥 3 − 𝑚𝑥 2 + 9𝑥 − 11 have the same remainder as when it’s divided by (𝑥 − 2) and (𝑥 + 3)?
*July 7, 2016*