# kyle

Newest questions posted by kyle-
## Stats

A random sample of 50 four-year-olds attending day care centers provided a yearly tuition average of 3987, with a population standard deviation of 630. Find the 90 percent confidence interval of the true mean. What is the upper bound of this interval? -
## Calculus

Electricity is consumed between the hours of midnight (t = 0) and 6 a.m. (t = 6). Selected values of the rate of consumption are shown in the table below, with t measured in hours past midnight, and R(t) measured in KW per hour. Use 4 trapezoids to -
## Advanced Placement Calculus

Electricity is consumed between the hours of midnight (t = 0) and 6 a.m. (t = 6). Selected values of the rate of consumption are shown in the table below, with t measured in hours past midnight, and R(t) measured in KW per hour. Use 4 trapezoids to -
## geography

What is the name of the island country off the NE coast of Venezuela? Trinidad and Tobago? -
## geography

Name the countries that border India? Myanmar, Bangladesh, Bhutan, Nepal, China, Pakistan, and Afghanistan??? Is Afghanistan correct ? -
## Pre-Algebra

The cost y (in dollars0 to provide food for guests at a dinner party is proportional to the number x of guests attending the party. it costs $30 to provide food for 4 guests. a. Write an equation that represents the situation. b. Interpret the slope. c. -
## History

What impact did World War I have on Russia? a.Russia’s territorial losses in the Baltic region led it to sign the Versailles Treaty to end its involvement. b.Russia’s high casualty rate led Czar Nicholas II to abandon the war effort to save civilian -
## History

What impact did technology have during World War I? a.Guerrilla warfare became more prevalent with advances in surveillance technology. b.The use of iron created the first battleships in the history of warfare. c.Military advancement on the western front -
## History

What was the Battle of the Somme? A.It was the longest battle that occurred during World War I. B.It was a battle that opened a second World War I front in Turkey. C.It was a months-long battle resulting in massive British casualties. D.It was a battle -
## History

What was a main cause of the Italian Independence War in the 1860s? A.opposition of the Italians against King Victor Emmanuel B.Austrian occupation and rule of northern Italy C.Napoleon’s conquest of the Italian peninsula D.a mutiny by Italian soldiers -
## Physics

The ink drops have a radius of 18.0 μm and leave the nozzle and travel toward the paper at a velocity of 20.0 m/s . The drops pass through a charging unit that gives each drop a positive charge q by causing it to lose some electrons. The drops then pass -
## math

In a random sample of 80 ears of corn, farmer Carl finds that 11 of them have worms. Carl claims that less than 20% of all his corn has worms. Test this claim at the 0.05 significance level. (a) What is the test statistic? zp̂ = (b) What is the P-value of -
## Math

A manufacturer claims that the mean amount of juice in its 16 ounce bottles is 16.2 ounces. A consumer advocacy group wants to determine whether the mean amount is actually less than this. The mean volume of juice for a random sample of 70 bottles was -
## Statistics

Suppose the weights of Farmer Carl's potatoes are normally distributed with a mean of 7.9 ounces and a standard deviation of 1.1 ounces. Suppose Carl bags his potatoes in randomly selected groups of 6. What percentage of these bags should have a mean -
## Math

A page out of a magazine had a 15 by 15 sheet of 225 stickers. How many of these stickers are not on the border of the page? -
## Social Studies

After identifying the problem, which of the following is the next step an engineer usually takes A. Explore what other people have done about the problem B. Build a prototype to solve the problem C. Identify related problems D. Communicate the results of -
## Math

Gina was training for a marathon. On the first day of her training, she ran 10 yards. On the second day of her training, she ran 10,000 inches. On the last day of her training, she ran 1000 feet. How much did Gina run in all -
## math

if x is zero, are the following problems equal? 9x-3x-4, 12x-4, 5x+x-4? -
## math

Brianna says 3 equations equal -4 if x is zero. Brianna's thinking is wrong -
## algebra

Solve: 4/s = -2/9 The answer is -18 Show work of how to get -18 Thank you!! -
## Math

The results of a survey are shown. In the survey, 28 students said their favorite dessert is ice cream. a. How many students were surveyed? b. How many students said their favorite dessert is pie? Favorite Dessert Pie: 15% Candy: 23% Cake: 27% Ice Cream: -
## SS

Why did Britain and France adopt a policy of appeasement when meeting with Hitler at the Munich conference A They knew he had an agreement with the Soviet union over Poland B they were led to believe he wouldn't try to take any more territory in Europe -
## math (precalc)

Find a polynomial with integer coefficients that satisfies the given conditions. R has degree 4 and zeros 3 − 4i and 5, with 5 a zero of multiplicity 2. -
## 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 -
## math (precalc)

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

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

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

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

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

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

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

write the base 10 numeral for twenty five thousand nine hundred? -
## 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? -
## 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 -
## 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 -
## 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 -
## 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 -
## 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 -
## 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. -
## 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. -
## 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 -
## 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 -
## Algebra 2

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

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

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

What is two thirds of eight? -
## 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? -
## Geometry

How would I find the ratio of the lengths of corresponding sides in two similar triangles? -
## 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 -
## life orientation

Propose 6 practical actions that you can take to address human rights violations of xenophobia in your community -
## 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. -
## 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=___ -
## Math

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

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

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

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

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

an ice cube a glass of cold water in a -
## science

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

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

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

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

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

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

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

Draw a diagram to show that there are two tangent lines to the parabola y = x2 that pass through the point (0, −25). Find the coordinates of the points where these tangent lines intersect the parabola. -
## Ath

A cup holds 1 5/8 gallons of water. How many quarts does it hold ? -
## Chemistry (Help)

I'm having trouble figuring out this one. Can you please help? I haven't gotten a response to any of my questions. Chemical formula: Na Name: Sodium Bond Type (intramolecular FOA): metallic bond VSEPR molecular shape: none Central Atom Hybridization: none? -
## Chemistry (Check)

Are these right? Chemical formula: NaCl Name: Sodium chloride Bond Type (intramolecular FOA): ionic bonding VSEPR molecular shape: none Central Atom Hybridization: sp3 Molecular Polarity: polar Interparticle force of attraction (IPFOA): London, -
## Chemistry Help

Which of the following exhibits the highest boiling point? HF, HCl, HBr, or HI Which of the following exhibits the highest boiling point? CH3CH3, CH3COOH, or CH3OCH3 How can you determine the highest boiling point of these? -
## Chemistry

Which of the following exhibits the highest boiling point? Ne, Ar, Kr, or Xe My answer: Xe Which of the following exhibits the highest boiling point? F2, Cl2, Br2, or I2 My answer: HI Which of the following exhibits the highest boiling point? NaCl, SO2, or -
## Chemistry

An aqueous antifreeze solution is 40.0% ethylene glycol (C2H6O2) by mass. The density of the solution is 1.05 g/cm3. Calculate the molality, molarity, and mole fraction of the ethylene glycol. molality I actually can do this whole problem EXCEPT for one -
## physics

A car of mass 800kg is climbing an incline at 10 degrees to the horizontal. Determine the increase in potential energy of the car mass s it moves a distance of 50m up the incline -
## Math

The table below represents the velocity of a car as a function of time: Time (hour) x Velocity (miles/hours) y 0 50 1 52 2 54 3 56 Part A: What is the y-intercept of the function, and what does this tell you about the car? (4 points) Part B: Calculate the -
## Physics

A small sphere has a hole drilled in it and it is placed onto a wire. The wire is bent into a circle of radius 15 centimeters. The sphere can slide freely without friction around the circular wire. The circular wire is held vertically. (a) If the circular