# kristen

Newest questions posted by kristen-
## Tech Business

PLEASE HELP!! I'm so behind. Are my answers correct? This is my last class to pass to graduate, and I have a hard time with it. 1. Which of the following Web 2.0 tool can aid in searches using key words? A) Blogging B) Podcasting C) Tagging(My answer) -
## Math, algebra

Construct a data set of 8 items that has a mean absolute deviation of 0.5 and for which average 8 -
## Bio Statistics - Math

I really need some help and guidance with these! 1.) What kind of variable is P1Wt? 6.) What is the approximate histogram shape of P1Ht? 7.) What is the mean, median, and mode of P1Ht? 9.) What kind of variable is P1Age? 10.) What is the approximate -
## Physical Science.

I need help answering this inferring question because I don't fully understand it. Q: Infer whether the size of an object's displacement could be greater than the distance the object travels. -
## Math

How can I use bar diagrams to divide unit fractions by whole numbers? -
## PreCalc

The half-life of krypton-91 (91Kr) is 10 s. At time t = 0 a heavy canister contains 5 g of this radioactive gas. (a) Find a function m(t) = m02−t/h that models the amount of 91Kr remaining in the canister after t seconds. -
## chemistry

how many moles of NH3 does it take to make 8.0 mol of H20 according to the reaction shown below? 4NH3 + 5O2 --> 4NO + 6H2O I REALLY NEED HELP WITH THIS AS I AM LOST. PLEASE PROVIDE NOTES. -
## math

Find the constant as such that the function: f(x)= {x^2-a^2 x does not equal a {8, x equals a -
## Math

A box can hold 175 cubic inches of cereal. Of the box is 7 inches long and 2.5 inches wide, how talk is it ? -
## math

If there are 150 students in the club and a recent survey shows that 3 out of 5 prefer Tues. meetings, how many do not want to meet on Tues. ? -
## English

Do you agree or disagree with the following statement children should begin stadying a foreign languages as soon as they start school.Why? Why not? -
## Physics

"Rocket Man" has a propulsion unit strapped to his back. He starts from rest on the ground, fires the unit, and accelerates straight upward. At a height of 16 m, his speed is 5.0 m/s. His mass, including the propulsion unit, has the approximately constant -
## life skills

ok if you have a 04 oldsmobile alero gll that gets 29 miles to the gallon and you are traveling 2232 miles how many times would you have to stop for gas if u fill the tank full every time -
## algebra

You buy 10 gallons of ice cream for a party, how many cup sized containers can you fill with this? -
## physics

NASA launches a satellite into orbit at a height above the surface of the Earth equal to the Earth's mean radius. The mass of the satellite is 550 kg. (Assume the Earth's mass is 5.97 1024 kg and its radius is 6.38 106 m.) (a) How long does it take the -
## algebra

What is the final grade for this student? (round to two decimal places) Quizzes = 5%, Exam 1 = 20%, Exam 2 = 20%, Lab Reports = 15%, Research Paper = 15%, Final Exam = 25% Lab Reports: 75,80,70,75,85,69,90,75 Quizzes: 85,60,70,0,75,80,80,80 Exam 1: 80 Exam -
## algebra

Julie the Jeweler has fifteen gold necklaces worth $120 each, nine silver necklaces valued at $90 each, ten plated necklaces valued at $60 each and thirty beaded necklaces worth $15 each. What is the average value of a necklace at Julie’s shop? (round to -
## algebra

An “A” is considered 4.0, a “B” is 3.0, a “C” is 2.0, a “D” is 1.0, and an “F” is 0. In your first semester you received the following grades. Calculate your grade point average English = credits 3.0 Grade = C Biology = credits 4.0 -
## algebra

On a quiz worth 5 points, four students earned a 5, seven students earned a 4, six students earned a 3, two students earned a 2, and one student earned a zero. Find the average score. (round to one decimal place) -
## algebra

A worker is exposed to 98 dB for five hours and 82 dB for a three hours, giving an eight hour working day. On average what noise level is this worker exposed to? (round to the nearest whole number) -
## Medical Term

I need some help with medical terms. I need to determine the word parts and the definition and I'm having a hard time with these 2. stomatoesophagogastroenterocolitis cardiosphygmopneumographologist -
## Math

An airplane is flying at an airspeed of 500 km/hr in a wind blowing at 50 km/hr toward the southeast. In what direction should the plane head to end up going due east? (Round your answer to two decimal places.)What is the airplane's speed relative to the -
## Chemistry

I don't know how to do Titration problems! I have an emergency homework assignment that's crucial to my grade! Please help with tips and step by step response! Please help!- 1. 50ml of 0.3 M KOH are required to titrate 60 ml of H^2SO^4. What is the M of -
## Math/algebra

Post a New QuestionCurrent Questions Homework Help: Algebra Posted by Kristen on Tuesday, May 5, 2015 at 7:53pm. A bank teller counts her $10 and $5 bills at the end of the day. She has a total of 70 bills. The total value of the money is $595. Let f -
## Algebra

A bank teller counts her $10 and $5 bills at the end of the day. The total value of the money is $595. Let f represent the number of $5 bills. I have to write an equation that represents the total value of the money. I know f = 5 and 2f = 10 but I am stuck -
## physics

An object is projected from the surface of the earth with a speed of 2.73x10^4 m/s. What is its speed when it is very far from the earth? (Neglect air resistance). -
## pre-calculus

Use the rational root theorem with polynomial division if needed to find all the zeroes of: P(x)=2x^4-3x^3+3x^2+5x-3. -
## Chemistry

How many liters of oxygen a@STP will produce 195 grams of diphosphorus pentoxide when reacted with sufficient phosphorus?- exact question. Could someone plz help I am confused and if you could help me put it in dimensional analysis. -
## algebra II

The following rational function describes concentration in blood of a certain medicine taken once depending on time, find a. the horizontal or oblique asymptote(s), if any, b. the vertical asymptote(s), if any, c. describe their possible meanings. -
## MATH

1: The table shows the low outside temperatures for Monday, Tuesday, and Wednesday. By how many degrees did the low temperature drop from Tuesday to Wednesday? 2) The table shows the low outside temperatures for Monday, Tuesday, and Wednesday. By how many -
## English

Which sentence uses the demonstratives correctly? A. I have to get out of these wet clothes before I catch an awful cold. B. I have to get out of these wet clothes before I catch a awful cold. C. I have to get out of those wet clothes before I catch a -
## physics

A cannon res a cannonball from ground level at an angle of 18 above the horizontal, and the cannonball lands on the ground some distance away. If the muzzle velocity of the cannon remains unchanged, at what angle should the cannon be red so that the -
## physics

the 900 kg car was traveling south and collided with the 2000kg car traveling west. they both got tangled and moved away from the impact point as one mass at 16.0m/s in the direction 24degrees west of south. what was the initial speed of each prior to the -
## physics

a car with a mass of 900kg and a car with a mass of 2000kg collide. one car is moved away from the impact point as one mass at 16.0m/s in the direction 24 degrees west of south. what was the initial speed of each car prior to the collision? -
## physics

a 62.0kg bungee jumper jumps from a bridge. she is tied to a bungee cord whose unstretched length is 12.0 m and falls a total of 31m a) calculate the spring constant k of the bungee cord and b) calculate the maximum acceleration she experiences. -
## physics

a family goes on vacation for a week and leaves on a fan that consumes electricity at the rate of 200 watts. If the electricity is $0.14/kWh, how much does it cost to run the fan during this time? -
## physics

a 62.0kg bungee jumper jumps from a bridge. she is tied to a bungee cord whose unstretched length is 12.0 m and falls a total of 31m a) calculate the spring constant k of the bungee cord and b) calculate the maximum acceleration she experiences. -
## physics

a man throws his keys up to his wife 4.00m above. the wife catches the keys 1.50s later. with what initial velocity were the keys thrown? -
## physics

a roller coaster weighing 500kg starts at rest from a point of 45m above the ground. what is its speed when it reaches point b at ground level? -
## physics

thank you -
## physics

so mr.pursley the velocity doesn't matter for the question I asked? -
## physics

so the velocity doesn't matter for the question I -
## physics

what would the tension in a string be if the block being suspended by the string had a mass of 5.0kg the acceleration was 2.2m/s^2 and the velocity was 5.2m/s -
## physics

a force F is applied in horizontal to a 10kg block. the block moves at a constant speed 2m/s across a horizontal surface. the coefficient of kinetic friction between the block and the surface is 0.5. the work done by the force F in 1.5 minutes is? -
## physics

a force of 20N compresses a spring with a spring constant of 50N/m. how much energy is stored in the spring? -
## physics

pilots can survive radial acceleration up to 9g(88m/s^2). can a fighter pilot flying at a constant speed of 500m/s and in a circle that has a diameter of 8800 m survive to tell about his experience? -
## physics

a stone is thrown straight up from a 50m high building and hits the ground at a speed of 37.1m/s. What is the initial velocity and what is the maximum height above the ground that the stone reaches? -
## physics

a man stands on the roof of a 15.0m tall building and throws a rock with a velocity of magnitude 30.0m/s at an angle of 33 degrees above the horizontal. ignoring resistance calculate the horizontal distance from the base of the building to the point where -
## physics

a long jumper takes off at an angle of 20 degrees with the horizontal and reaches a maximum height of 0.55 meters at mid- flight. how far did she jump? -
## Math

Your school is planning to put an aquarium with 30 fish in it in the main lobby. To accommodate this number of fish, the aquarium should be between 50 and 60 cubic feet of water. To help reduce costs, the surface area of the aquarium should be no more than -
## Buying A Car

Which one of these statements is true about a "bumper-to-bumper" warranty. A. Normal wear and tear is NOT covered by the warranty. B. All expenses except gasoline and routine oil changes are covered by the warranty. C. Every part and system is covered -
## Duration

Find the duration of a 6% coupon bond making annual coupon payments if it has three years until maturity and a yield to maturity of 6.5%. What is the duration if the yield to maturity is 10.5%? -
## Finance

A bond currently sells for $1,120, which gives it a yield to maturity of 5%. Suppose that if the yield increases by 25 basis points, the price of the bond falls to $1,070. What is the duration of this bond? -
## Algebra

Fiona and camila took a load of peaches to the farmers market. During the first hour , they sold 1/2 of the peaches plus 1/2 of a peach. In the second hour, they sold 1/3 of the remaining peaches plus 1/3 of a peach. In the third hour , they so,d 1/4 of -
## Chemistry

How many grams of a 17.7% potassium sulfate solution would contain 419.9 g potassium sulfate? Answer in units of g -
## Chemistry

Write the equation for the dissolution of NH4NO3 in water. If 5.95 mol of NH4NO3 are dissolved, how many total moles of ions are produced? Answer in units of mol -
## Math

Sixty people, half of whom were females, were asked if they liked yogurt. Thirty-two of the people, including two-fifths of all of the males, said that they did like yogurt. How many of the females didn't like yogurt? -
## Math

A clock has a minute hand10 inches long. What is the distance traveled by the tip of the minute hand in 1 day? -
## Math

At one point on a mountain road, the elevation is 1250 meters. Three kilometers up the road, the elevation is 1610 meters. What is the average change in elevation for each hundred meters on this section of the road? -
## Math

I am thinking of a number. If I add a half, fourth, and a ninth of it together, I get a total of 62. What's my number? -
## Math

What is the weight of the snow I have to shovel off our sidewalk after a 6 inch snowfall ? Our sidewalk is 150 feet long and 3 feet wide. -
## Math

The sum of two fractions is 1 1/2. Their difference is 5/12. What are the fractions? -
## Chemistry

The half-life for the first-order conversion of A to B is 56.5 hours. How long does it take for the concentration of A to decrease to 10.0% of its original amount? Our professor has given us the answer - 188hr but I am not entirely sure how he got it. -
## Math

Alex makes a 14 inch diameter pizza, which includes a 1 inch crust. Donald wants to make a 10 inch diameter pizza with the same percent of crust as Alex's pizza. To the nearest tenth of an inch, approximately how wide will the crust be on Donald's pizza? -
## Geometry

How many distinct isosceles triangles exist with a perimeter of 99 inches and side lengths that are positive while numbers? -
## Math

Fred is closing a bank account t and wants to distribute the money among his grandchildren by giving each of them $20. To do this Fred needs an additional $62 . Instead he gave each grandchild $17 and had $7 left over. How many grandchildren does Fred -
## Math

A box contains 20 red balls and 40 green balls . Four balls are randomly selected from the box without replacement. What is the probability of selecting a red ball followed by a green ball and then another red ball followed by a green ball? -
## Math

Loretta's age now is twice John's age five years ago. In three years the sum of John's and Loretta's ages will be 50. How old are Loretta and John today? -
## Math

What is the smallest counting number n so that 375n is a perfect square? -
## Math

Coins numbered 1-200 are placed in a hat. What is the probability that a coin chosen at random out of the hat is a multiple of 6 or 9? -
## Math

What is the sum of the prime factors of 1260? For example, the sum of the prime factors of 20 is 9. -
## Math

How many terms are in the following sequence that follows? 3,7,11,....,439 -
## Math

A car rental agency charges $37.50 per day and $0.23 per mile or fraction thereof to rent a car. How many miles can be driven in a day before the charge reaches $100.00? -
## Math

A high rise apartment building has four elevators. Each elevator travels upward at an average rate of 18 feet per second. The elevator travels 12 feet from one floor to the next. Suppose you get on the elevator on the first floor and travel straight to the -
## Math

Which set of factors of the number 420 has the least possible sum? Which set of factors of the. Number 420 has the greatest possible sum? Be sure that the two sets of factors both have a product of 420 -
## Math

Nine consecutive odd whole numbers sum to 243. Find the sum if the first and last whole numbers in this nine-addend ser. -
## Math

How many numbers between 9 and 100 exist such that the product of the digits is treaters than the actual number? -
## Math

Find the whole number that meets all the following conditions 1. It is greater than 100 2. It is less than 200 3. It is 20 greater when rounded to the nearest 100 than when it is rounded to the nearest 10 -
## Math

Find the greatest ten digit positive multiple of 12 using each digit once and only once. -
## Math

Find the next three values in the following sequence of numbers. -1,0,1,0,1,2,3,6,11,20,37 -
## Math

Find the greatest ten digit positive multiple of 12 using each digit once and only once . -
## Math

Find six consecutive multiples of 6 whose sum is the least common multiple of 13 and 18. -
## Math

If f(x) = x^4 -5x^2 +4, for what values of x is the absolute value of f(x) not differentiable? -
## Math

The ratio of cats to dogs is 2:1 and the ratio of dogs to parrots is 15:2. In addition, the ratio of parrots to snakes is 3:1 and the ratio of snakes to turtles is 6:7. What is the ratio of cats to turtles? -
## Math

Four hoses are filling a pool. The first hose alone would fill the pool in 4 hours while the second hose takes 6 hours. The third hose and the fourth hose each take 8 hours to fill the pool. How long would it take to fill the pool if all 4hoses are turned -
## Math

Warren is riding his bike at 15 mph on a road adjacent to railroad tracks. A train traveling at 90mph in the opposite direction as Warren, takes 20 seconds to pass him. How long is the train? -
## Math

A projectile is launched from a cannon that sits 4 feet off the ground at an initial velocity of 120 feet/sec. Find the impact velocity. -
## English

Which word fits? Have officials chose/chosen the city for the next Olympics? The Greek gods and goddesses drank/drunk nectar. -
## Math (ms sue or Kuai pleas e help)

The "4" ranch is 7680 acres. It is a rectangle that is a mile longer than it is wide. What are the dimensions of the ranch? -
## Math

A ranch is 7680 acres. It is a rectangle that is a mile longer than it is wide. What are the dimensions of the ranch? -
## Math

A ball bounces 0.7 of the distance it is dropped. How many bounces will the ball make from a height of 1 meter if a bounce of less than 1 centimeter is to be ignored? -
## Math

A projectile is launched from a cannon that sits 4 feet off the ground at an initial velocity of 120 ft/sec. Find the position function and how long is it before the projectile hits the ground? I got -16t^2 +120t+4 for my position function, but I'm not -
## Calculus

Find two positive numbers that satisfy the requirements: "The product is 147 and the sum of the first number plus three times the second number is a minimum." -
## Math

How to find the y-intercept of this function: (7-3x)/(x-2) -
## chemistry

When a photon of light hits the surface of a metal, a photoelectron may be emitted. Some of the photon's energy is required to free the electron from the surface. The remaining energy becomes the kinetic energy of the photoelectron. The minimum energy for -
## Chemisrty

Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s1. A. What is the symbol for this element? B. What is the atomic number of this element? C. How many unpaired electrons does an atom of this elelemt have? -
## Physics

A 0.245kg ball is thrown straight up from 2.20m above the ground. Its initial vertical speed is 8.80m/s. A short time later, it hits the ground. Calculate the total work done by the force of gravity during that time. -
## Physics

A constant force of 35.9 N, directed at 28.7o from horizontal, pulls a mass of 14.7 kg horizontally a distance of 3.41 m. Calculate the work done by the force. -
## Physics

A constant force of 35.9 N, directed at 28.7o from horizontal, pulls a mass of 14.7 kg horizontally a distance of 3.41 m. Calculate the work done by the force. -
## math

Juan, Steve, and Gabriella bought a total of 30 markers at an art store. Juan bought 3 more markers than Steve. Gabriella bought 7 times as many markers as Steve. How many markers did each buy.