Monday

February 20, 2017
Total # Posts: 1,099

**Math (calc)**

An open box with a square base is to have a volume of 12ft^3. Find the box dimensions that minimize the amount of material used. (round to two decimal places). it asks for the side length and the height. Please help asap due in a few hours. Thank you

*February 8, 2017*

**math (precalc)**

I am confused by the multiplication of 1/h.

*February 5, 2017*

**math (precalc)**

yes sorry let F(x)=(x-1)/(3x) find f(a+h)-f(a)/h. f(x)=(x-1) over (3x) find f(a+h)-f(a) all over h.

*February 5, 2017*

**math (precalc)**

let F(x)=x-1/3x find f(a+h)-f(a)/h sorry if this is difficult to understand.

*February 5, 2017*

**algebra**

Twice Bill's age plus 2 is equal to 4 times Bill's age less 46. Let Bill's age =b

*January 10, 2017*

**physics**

During a storm, a tree limb breaks off and comes to rest across a barbed wire fence at a point that is not in the middle between two fence posts. The limb exerts a downward force of 253 N on the wire. The left section of the wire makes an angle of 15.4° ...

*January 8, 2017*

**physics**

One block rests upon a horizontal surface. A second identical block rests upon the first one. The coefficient of static friction between the blocks is the same as the coefficient of static friction between the lower block and the horizontal surface. A horizontal force is ...

*January 8, 2017*

**physics**

Traveling at a speed of 18.0 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.580. What is the speed of the automobile after 1.44 s have ...

*January 8, 2017*

**physics**

A person pushes on a 55-kg refrigerator with a horizontal force of -250 N; the minus sign indicates that the force points in the -x direction. The coefficient of static friction is 0.56. (a) If the refrigerator does not move, what are the magnitude and direction...

*January 8, 2017*

**physics**

A car is traveling up a hill that is inclined at an angle ? above the horizontal. Determine the ratio of the magnitude of the normal force to the weight of the car when (a) ? = 17o and (b) ? = 30o

*January 8, 2017*

**physics**

A car is traveling up a hill that is inclined at an angle ? above the horizontal. Determine the ratio of the magnitude of the normal force to the weight of the car when (a) ? = 17o and (b) ? = 30o.

*January 5, 2017*

**Physics**

A 70.0-kg astronaut pushes to the left on a spacecraft with a force in "gravity-free" space. The spacecraft has a total mass of 1.0 × 104 kg. During the push, the astronaut accelerates to the right with an acceleration of 0.36 m/s2. Determine the ...

*January 5, 2017*

**math**

x^1/2-6=x^1/4 please explain steps to solving!

*December 12, 2016*

**math**

((2)/(x-2))^(2)-3((2)/(x-2))+2=0 please explain the steps!

*December 12, 2016*

**College Calc**

Hi, Im sorry Im not understanding i keep getting 144 as my answer

*December 3, 2016*

**College Calc**

What is the minimum number of feet of fencing needed to create a rectangular garden with an area of 576ft? Please help!!

*December 3, 2016*

**Math**

Manuel bought 9 pounds of apples. He has eaten three fourths of a pound so far and has? $15 worth of apples left. Write and solve an equation to find the cost of the apples per pound to the nearest dollar. How much did the apples cost per? pound?

*November 14, 2016*

**Algebra**

Thank Scott but I did figure out the answer I just don't know how to write the equation for it, can you show me the equation? Thank You again

*November 13, 2016*

**Algebra**

2 cyclists start from the same point and ride in opposite directions. 1 rides twice as fast as the other. In 3 hours they are 90km apart. What is the rate of each cyclist? I figured out the answer is 20km/h and 10km/h. What I don't know and need help with is how to write ...

*November 13, 2016*

**maths**

no reaction look at it you cant add kci to h2o so theres no reaction if there was not a h2o i would be a reaction hope that helps im in 12 grade so i think i know what your doing i learned this in 9th grade thats what i remaeber

*November 7, 2016*

**College Calc**

The average daily metabolic rate for rodents can be expressed by the function m=85.65w^0.54, where w is the weight in kg and m is the metabolic rate in kcal/day. Determine the rate of change in the metabolic rate with respect to time for a 0.25kg rodent that is gaining weight ...

*November 6, 2016*

**Math**

write the base 10 numeral for twenty five thousand nine hundred?

*October 24, 2016*

**math**

Suppose y varies directly with x and y = 72 when x = 6. What direct variation equation relates x and y? What is the value of y when x = 10?

*October 21, 2016*

**Physics algebra and trig**

A pair of fuzzy dice is hanging from the rearview mirror of a race car. As the car accelerates smoothly, the strings of the dice are tilted slightly toward the rear of the car. From the perspective of the driver, which one of the following statements is true, if the dice are ...

*October 20, 2016*

**Physics/Science**

Thank You Ms. Sue - you always help me out. I will let you know how it goes. Thanks again Kyle

*October 6, 2016*

**Physics/Science**

I'm in 7th grade and I have a writing assignment that our teacher said "do your best" as an explanation. My best would be to call out sick the rest of the year! Hear goes. Explain the scientific accomplishments of Stephen Hawking. How dis his accomplishments ...

*October 6, 2016*

**Physics**

A hydroxide ion (OH−) in a glass of water has an average speed of about 600 m/s. Determine the magnitude of the electrical force between the hydroxide ion (charge −e) and a positive ion (charge +e) that is 1.0 × 10−8 m away (about the separation of 30 ...

*October 3, 2016*

**Art**

THANK YOU FAM

*September 15, 2016*

**Social Studies**

which of these actions would most help a worker improve their productivity? A: Finding a new job in a different field. B: Taking a training course related to her job. ****** C: Buying a laptop computer for home use. D: asking her employer to give her a raise. The answer is B, ...

*September 15, 2016*

**Math HELP!**

104.00

*September 15, 2016*

**Math HELP!**

So im right?

*September 15, 2016*

**Math HELP!**

Jayden opens a savings account with $100.00. His account pays 4% simple interest. How much money will be in his account one year later if he makes no deposits or withdrawals? A.) $96.00 B.) $100.00 C.) $104.00 D.) $148.00

*September 15, 2016*

**Social Studies**

Answer is B

*September 9, 2016*

**Math**

A number has 6 in the hundredths place. The number also contains a digit whose value is 1/10 the value of 6 in the hundredths place.

*September 5, 2016*

**math**

Three faucets fill a 100-gallon tub in 6 minutes. How long, in seconds, does it take six faucets to fill a 25-gallon tub? Assume that all faucets dispense water at the same rate.

*July 28, 2016*

**physics**

a person uses a slingshot to launch a rock upward with a velocity of 30m/s how long does it take to reach a height of 20m what maximum height does the rock reach, what is the velocity of the rock at this height, what is the velocity of the rock just before it lands

*July 26, 2016*

**physics**

a driver starting from rest accelerates at a rate of 1.5m/s^2 for 20s until reaching a certain speed she then continues driving at this constant speed for an additional 20s what maximum speed does the driver attain what total distance does the driver cover during the 40s that ...

*July 26, 2016*

**Algebra 2**

(a+3)^2/a-3/5/(a^2-9)= Pls help have no idea where to start

*July 17, 2016*

**math**

Kyle opened a bank account with $450. He deposits $58.50 each week. Write a function that shows the amount he has after w weeks. What is the function.

*July 11, 2016*

**math**

if a tax meter registers 20 pesos plus 5 pesos per kilometer covered. express the amount T registered in the taxi meter as a function of the number of kilometers covered

*July 11, 2016*

**Social studies**

How about, tell me if there wrong 2. d 3. c

*May 23, 2016*

**Social studies**

But I need someone to check the other ones now!!

*May 23, 2016*

**Social studies**

Mexico's economy is based largely on? a.) oil exports b.) mining c.) agriculture and live stock •• d.) industry ___________________________________ 2. Many indigenous people in Guatemala live in the mountains because? a.) it is the only land available to them &#...

*May 23, 2016*

**Language Arts**

Sal likes Chickens. The Chicken's name is Blackberry. Blackberry's remind Sal of her mother. Her mother likes Chickens. Simple.

*May 18, 2016*

**Math**

33. A bag of marbles contains 5 red, 3 blue, 2 green, and 2 yellow marbles. What is the probability that you choose a red marble and then a green marble assuming you replace the first marble? A) 1/24 B) 5/72 C) 5/66 D) 5/6

*May 16, 2016*

**Physics**

On the Round Up at the amusement park, people stand in a cylindical "room" of radius 6.18 m and the room rotates until it reaches a rotational frequency of 0.89 revolutions per second. At this point, the floor drops out. What is the minimum coefficient of static ...

*May 10, 2016*

**science**

the African plate is moving toward the Eurasian plate at a rate of a few centimeters per year. how will this area change in 100 million years? in your answer, consider how continents will change and how the Mediterranean sea will change.

*May 5, 2016*

**science**

a geologist working in a national park finds a mineral. He is caring a kit that contains a Penney, a hand lens, a geologist hammer, and a jackknife. describe how the geologist can use these items determine some of the minerals chartist

*May 5, 2016*

**science**

tom is marking the locations of active volcanos on a world map. explain how the locations of the volcanoes are related to earths plates

*May 5, 2016*

**geometry**

in an isosceles trapezoid, ABCD, AD congruent BC. diagonal AC bisects angle DAB. if the measure of angle CAB = 15, find: the measure of angle b, measure of angle BCA, measure of ACD, and the measure of angle D

*May 3, 2016*

**science**

Tom is markina locations of active volcanoes on a world map explain how the locations of the volcanoes are related to Earth's plates

*May 3, 2016*

**Algebra**

A field is six times as long as it is wide. If the perimeter is 420 FT, find the dimensions of the feild.

*April 27, 2016*

**Trigonometry Help please**

Write each expression in the standard form for a complex number, a + bi. A. [3(cos(27°)) + isin(27°)]^5 B. [2(cos(40°)) + isin(40°)]^6 For A i got 2.67+1.36i and for B i got 1.53+1.29i

*April 18, 2016*

**Trigonometry**

Write each expression in the standard form for a complex number, a + bi. A. [3(cos(27°)) + isin(27°)]^5 B. [2(cos(40°)) + isin(40°)]^6 For A i got 2.67+1.36i and for B i got 1.53+1.29i

*April 18, 2016*

**Math help please**

Prove this identity using the product-to-sum identity for sine: sin^2 x=1-cos(2x)/2

*April 5, 2016*

**Math**

Keep adding 3/4 to 3/4 until you reach 7 1/2. Then count how many times you added and that will be your answer.

*March 30, 2016*

**Math**

Thanks.

*March 30, 2016*

**Math**

I did 2/3 x 8/1 and got 16/3. I then simplified it into 5 1/3, is that correct?

*March 30, 2016*

**Math**

I just need help how to solve it.

*March 30, 2016*

**Math**

What is two thirds of eight?

*March 30, 2016*

**calculus**

Find the solution of the differential equation that satisfies the given initial condition. dp/dt=2 sqrt(pt), P(1)=5 my answer: P=(2/3t^(3/2)+(15sqrt(5)-10)/15)^2 how is it wrong?

*March 20, 2016*

**Math**

MY son is in pre k and i like puuting out 10 objects he loves candy and toys and ill put out for example 6 he will count it to 6 he will get it right he is now in first grade and can count to 500 i think that helped him i also did abc mouse and youtube and we would go to the ...

*March 16, 2016*

**Geometry**

How would I find the ratio of the lengths of corresponding sides in two similar triangles?

*March 12, 2016*

**Physics**

A solid sphere of uniform density starts from rest and rolls without slipping a distance of d = 4.8 m down a θ = 36° incline. The sphere has a mass M = 3.2 kg and a radius R = 0.28 m. If there is no frictional force, what is the translational kinetic energy of the ...

*March 12, 2016*

**life orientation**

Propose 6 practical actions that you can take to address human rights violations of xenophobia in your community

*March 11, 2016*

**English**

Analogies: Circle the analogy that best matches the word below. Photon : Light a.) small : invisible b.) molecule : visible c.) home : kitchen d.) page : book I'm thinking c maybe? None of them really make sense to me.

*March 8, 2016*

**Math**

If an amount of x dollars is invested at 3% interest compounded continuously, and at the end of 6 years the value of the investment is $4000, find x. x=___

*February 29, 2016*

**Math**

Which set of numbers best describes the displayed weight on a digital scale that showe each weight to the nearest half pound?

*February 23, 2016*

**Math**

Suppose h(x)= sqrt(f(x)) and the equation of the tangent line to f(x) at x=1 is y=4+5(x−1). Find h′(1).

*February 22, 2016*

**science**

why did a portion of the table top get cold when Natasha placed her cold drink on the table

*February 18, 2016*

**science**

a I think

*February 18, 2016*

**science**

not relly

*February 18, 2016*

**science**

they are a heterogeneous mixer vaporization a chemical change an amorphous solid

*February 18, 2016*

**science**

a banana turning brown when exposed to the air is an example of what

*February 18, 2016*

**science**

an ice cube, a glass of cold water, and a swimming pool are each exposed to the same amount of sunlight on a hot day. after five minutes, the ice cube is melted and the cold drink is two degrees warmer, but the temperature of the swimming pool remains unchanged. what is the ...

*February 18, 2016*

**science**

a blank property of matter describes an ability to change into different substances

*February 18, 2016*

**science**

a bananan turning brown when exposed to the air is an example of

*February 18, 2016*

**science**

how can a swimming pool be unchangd

*February 18, 2016*

**science**

an ice cube a glass of cold water in a

*February 18, 2016*

**science**

a 54-gram sample of an unknown material has a volume equal to 20cm3 what is the identity of the substance

*February 18, 2016*

**Math**

Thank you very much! I was stuck and needed this.

*February 3, 2016*

**Math**

Consider the function f(x)=7x^(2)+9. Its tangent line at x=5 goes through the points (1,y1) and (−7,y2) where y1= ___ , and y2= ___

*February 3, 2016*

**Precal**

Use row reduction to solve this x+4y=-22 -2X-2y=14

*February 1, 2016*

**Math**

A drawing has a scale of 1cm=2ft.If the object drawn has a length that measures 8.5cm, what is the objects actual length. The answer I have is 17ft. Is this correct?

*January 29, 2016*

**Math**

Nevermind, I figured it out! I got 209/16 and it's correct.

*January 28, 2016*

**Math**

If h(t) represents the height of an object in feet above ground level at time t and h(t) is given by h(t)=−16t^(2)+14t+10 find the height of the object at the time when the speed is zero. The height of the object is h(t)= ___ feet.

*January 28, 2016*

**Science**

100% got them all right

*January 21, 2016*

**Math**

What I meant was I am converting gallons to pints. Is this correct 80 gallons= 640 pints

*January 17, 2016*

**Math**

I am stuck on this problem: Would 80 gallons > 350 pints? because i know i gallon=8 pints

*January 17, 2016*

**Math**

Sorry Damon. Is this right now: .62 < .622 < .625 < .626? Is it right now

*January 17, 2016*

**Math**

So would this be it: .62 < .622 < .6262 < .625

*January 17, 2016*

**Math**

For this problem I have to order these numbers from least to greatest. Would this be correct: .62< .622 < .6262 < 5/8

*January 17, 2016*

**math help..STEVE**

what are the answer

*January 11, 2016*

**Math**

So how would I put the numbers in order now?

*January 10, 2016*

**Math**

Sure. I believe the answer is .309, .363, .333, and .33. Am I right?

*January 10, 2016*

**Math**

Thanks Ms. Sue. Would the decimals be .3 repeating and .36363

*January 10, 2016*

**Math**

I am having trouble putting these numbers from greatest to least. Here are the numbers: .33, 1/3, 4/11, .309

*January 10, 2016*

**math**

For what values of a and b is the line 4x + y = b tangent to the parabola y = ax2 when x = 5?

*January 9, 2016*

**calculus**

Find a cubic function y = ax3 + bx2 + cx + d whose graph has horizontal tangents at the points

*January 9, 2016*