# Posts by Kate

Total # Posts: 2,014

Math
Chords line PQ and line RS of a circle meet at X inside the circle. If RS = 38, PX = 6, and QX = 12, then what is the smallest possible value of RX?

Math
In triangle ABC, AB = 10, AC = 8, and BC = 6. Let P be the point on the circumcircle of triangle ABC so that angle PCA = 45 degrees. Find CP.

math
A cone-shaped glass and a tin can are filled with water. The height of the cone is 12" (12 inches) and it has a radius of 1.5" (1½ inches). The can is 2 inches high and has a diameter of 4 inches. Which container holds more water? How much more water does the ...

Math- Prob Stat
The amount of time a student spends completing homework per week their senior year is normally distributed with a mean of 5 hours and a standard deviation of 1.4 A. Find the probability a randomly selected student spends less than 3 hours completing homework B. Find the ...

Math help!
5. Replace the ___ with <, >, or = to make a true statement. 7^4/7^2____ 49 < <--------------- > = none of the above multiply the following polynomials. 6. –2r(8r + 5) –16r^2 + 5 <-------------- –16r^2 + 10 –16r^2 – 10r –16r^2 &#...

Math- Prob Stat
The probability that a student in this school has a job is 65%. What is the probability that: A. You ask at least 8 people before you find someone with a job? B. You ask at most 4 people before you find someone with a job? C. Between 15 and 29 people in a group of 50 will have...

Maths
50

Math- Prob Stat
How do you determine if a raffle or casino game is fair?

Math- Prob Stat
In a Gallop Poll, 35% 18-23 year old's stated that they believe in ghosts. Find the probability that out of 16 students aged 18-23: A. Exactly 5 said they believed in ghosts. B. Exactly 5 said they do not believe in ghosts. C.Less than 11 said they do not believe in ghosts...

Math
Did you find this? I'm taking this test now and am so lost

Chemistry
Calculate the standard free-energy change for the following reaction at 25 °C. Standard reduction potentials can be found here. 2Au^3+(aq) + 3Cr(s) <-----> 2Au(s) + 3Cr^2-(aq)

PreCal
An airplane is traveling at 575 mph in the direction of S 83 degree W. The wind is blowing at N 35 degree W. What is the actual speed and direction of the plane?

Life Orientation
Identify three of human rights violations or discrimination and explain in an itroductory paragraph why you choose the specific human rights violations or discrimination

Life orientation
By not giving money to the police when u are given a fine..

Pre-Calc
A pilot is flying over a straight highway. He determines the angles of depression to two mileposts, 3 mi apart, to be ∠x = 35° and ∠y = 45°, as shown in the figure. (Round your answers to two decimal places.)

life orientation
Life orientation

algebra
A laptop computer is purchased for \$5000 . Each year, its value is 70% of its value the year before. After how many years will the laptop computer be worth \$300 or less

Math
A farmer has 36 feet of fence to build a pigpen. He is going to use one of the sides of his barn as a side to the rectangular enclosure. Determine a function A that represents the total area of the enclosed region. What is the maximum area that can be enclosed?

chemistry
Calculate the concentrations of all species present in a 0.100 M solution of weak polyprotic acid H3PO4. Ka1=7.5 x 10 ^-3, ka2 = 6.2 x 10 ^-8, Ka3= 3.6 x 10^-13 How the heck do I do this

Math
>?

Math
Kate won a bag of candy at a raffle. She gave 1/5 of the candy to her brother, 1/4 of the candy to her friend, and had 11 pieces left over. How many pieces did she give her Brother?

Math
There are 92 band students. For a concert, the stage is divided into four sections. 24 students sit on the left, 36 sit in the middle, 28 sit on the right, and 4 stand behind the others. What fraction of the band sits in the middle?

Math
. If there are 1050 students in a school and the ratio of boys to girls is 9:5, then what is the number of boys in the school?

math
You order a pizza. The pizza has a diameter of 14 inches and it is cut into 12 equal slices. You eat four slices, how much of the area have you consumed. How long is the remaining crust.

math !
what Is it jesse?

life orientation
Spectator aggression is triggered by the intense feelings and emotions of the fans who are watching the sports event. When the sporting facilities and venues are not adequate to hold a large number of spectators, fans become irritable and rowdy easily. Fans can easily ...

sociology
how does social structure shape individual action?

chemistry
How many kilojoules are required to melt 15g of ice at 0 degree celsius, and raise the temperature of the liquid that forms to 85 degree celsius?

FINANCE
You have just purchased a new warehouse. To finance the purchase, you’ve arranged for a 35-year mortgage loan for 75 percent of the \$3,250,000 purchase price. The monthly payment on this loan will be \$15,800. Requirement 1: What is the APR on this loan? (Round your ...

sphy011
A football game costumarily begins with a coin toss to determine who kicks off. The referee tosses the coin vertically upwards with an initial velocity of 5m/s and it takes 1.02s for it to be in the air. In the absence of air resistance 1.How high does the coin go above its ...

psychology
i need 2 examples of what researchers on the human genome project have already learned a bout the human genome

Direct variation algebra 2
If V varies directly as G, and V =36 when G =4. Find V when G =11

english
The world we have created Read the saying by Albert Einstein. How do you understand its meaning? Write 100-120 words of explanation. You may also refer to what the other participants write and agree or disagree with their opinion. You may score up to 15 points for your entry...

algebra
How do you write the expression for 5 less than the quotient of a number and 2. Here is my answer but the quotient part is confusing me. 5<?+2

Math
What are the answers someone plz help!!!!!

health
Its D i just interd it and got it right.

math written assignment help
by the way this is actually a story problem in my text book so don't get so assuming that it is an assignment. its a simialr single "problem" to one I (figured out on my own thansk for the not so much help).

math written assignment help
I wasn't asking somone todo the assignment, i was asking for help on where to start with this problem in the beginning. I was not posting this to cheat, it is easier for the whole thing to be posted to know what it is about. never mind!!!! thanks for the help anyway!!

math written assignment help
A’s DJ service charges a \$200 setup fee and \$75 an hour after that. B’s DJ service charges no setup fee but costs \$125 an hour. (4 points) Set up equations for both of the services using x and y. Determine the variables and provide an explanation for why you chose ...

intro to algebra written assignment help
dont be so rude!

intro to algebra written assignment help
Assume you are throwing a baseball up from the top of a building. The equation for the height of the ball, h, at time, t, is represented by the equation: h=-16t^2+64t+512 (5 points) After how many seconds does the ball reach 560 feet? Explain what your answer means. (5 points...

math
Assume you are throwing a baseball up from the top of a building. The equation for the height of the ball, h, at time, t, is represented by the equation: h=-16t^2+64t+512 (5 points) After how many seconds does the ball reach 560 feet? Explain what your answer means.

Stat
"Records show that 8% of all college students are foreign students who also smoke. It is also known that 50% of all foreign college students smoke. What percent of the students at this university are foreign?" I had that: P(A)=50 P(B)=? P(A|B)=8

physics
1) A 70 kg woman dives from a 2.5 m high diving board. The gravitational field strength is 10 N/kg. Describe whether she gains or loses gravitational potential energy, and calculate the change in gravitational potential energy

Math
How much is the total amount if an item costs \$8.28 pr pound and they buy 13 1/3 pounds?

Math
Thanks to Ms Sue. I wasn't using the fraction correctly.

Math
One pound costs \$8.28. What is the total cost of 10 1/3 pounds?

physics

Physics
A car, moving along a straight stretch of high- way, begins to accelerate at 0.0377 m/s2. It takes the car 34.3 s to cover 1 km. How fast was the car going when it first began to accelerate? Answer in units of m/s.

Math
Please help me with steps to work out the following problem. Simplist way possible. Mary needed different coloured balloons for decoration. She had \$1.25 (Australian dollars) and spent it all on a number of white, red, and blue balloons. A white balloon costs \$.10, a red one...

Maths
Jill spent 40% of her money . If she had €120 left , how much had she at the start ?

geometry
Parallel lines in space are coplanar. A. always B. sometimes C. never

Statistics
A bag contains 5 purple marbles, 7 yellow marbles, and 3 orange marbles. If two marbles are selected from the bag: What is the probability that an orange then a yellow are chosen with replacement?

Physics
A rock is launched off a table horizontally with a velocity of 10 m/s. If the table is 1.5 m above the floor, how long will it take for the projectile to hit the floor? What distance will the rock land in respect from the edge of the table? 2(1.5)/9.8=t^2. T=.553? What is the ...

precalculus
For what values of b will the line y=2x+b be tangent to the circle x^2+y^2=9?

Algebra
Mary is 15 years older than her niece Katie. In 10 years Mary is two times as old as Katie. How old are Mary and Katie now? How do I solve this (equation + work) Thank you!

math
break apart the addends to find the a sum 18+26=

Math
a 14.5 gas tank is 3/4 full. How many gallons will it take to fill? Please help me set this up. Thanks!!!

Simple interest math
How many years will it take to double an investment if the annual simple interest rate is 5.3%? Round to the nearest 10th.

Science
An air mass of 25°C with a dew point of 10°C has a starting elevation of sea level (0 meters) encounters a mountain range with a peak elevation of 3,000 meters above sea level. At what elevation is the Lifting Cloud Level?

Math
After 40 spins, Chris landed on red 18 times. What is the experimental probability of landing on red? What is the theoretical probability of landing on red? Right as a fraction in simplest form.

algebra
0.957 0.912 0.925 0.886 0.920 0.958 0.915 0.914 0.947 0.939 0.84 mean=

math
thank you!!!!!

math
smallest to largest

math
0.957, 0.912, 0.925, 0.886, 0.920, 0.958, 0.915, 0.914, 0.947, 0.939, 0.84 how do i put these in order

Math
89 but if it was .886 wouldn't it be 86 cents?

Math
what is greater 0.84 or 0.886

college 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)

Math
The following points show how many centimeters a bamboo plant can grow (g) and the hours (h) that the plant has been growing. What is k?(g,h) (10,50) (20,100) (50,250)

Nutrition
Write equations to show how 2-methyl-1-pentene could be converted to 2-hydroxy-2-methylpentane 1-hydroxy-2-methylpentane

physics
A man is standing beneath two rain clouds, equidistant from each cloud, as shown in the figure. Cloud A has an excess of 7.1 104 negative charges while cloud B has 7.1 104 positive charges (where a charge has magnitude e). (a) What is the magnitude of the net electric field ...

physics
(2•0.411•9.8•5.22/0.344•8.46)

physics
At a carnival, you can try to ring a bell by striking a target with a 8.46-kg hammer. In response, a 0.411-kg metal piece is sent upward toward the bell, which is 5.22 m above. Suppose that 34.4 percent of the hammer's kinetic energy is used to do the work of sending the ...

physics
still not right where am I going wrong?

physics
(a) Work = (1/2)MV^2 at takeoff v = sqrt(2*2.4*10^-4/1.5*10^-4) = 0.00017888543 j

physics
58.0*9.8*3.70 =-2100 j 3 sig fig b) 2100 j 3 sig fig thanks Damon

physics
If a scuba diver descends too quickly into the sea, the internal pressure on each eardrum remains at atmospheric pressure while the external pressure increases due to the increased water depth. At sufficient depths, the difference between the external and internal pressures ...

physics
The human lungs can function satisfactorily up to a limit where the pressure difference between the outside and inside of the lungs is 1/21 of an atmosphere. If a diver uses a snorkel for breathing, how far below the water can she swim? Assume the diver is in salt water whose ...

physics
distance is 0.610m sorry

physics
The drawing shows an intravenous feeding. With the distance shown, nutrient solution (ñ = 1040 kg/m3) can just barely enter the blood in the vein. What is the gauge pressure of the venous blood? Express your answer in millimeters of mercury.

physics
thanks Damon

physics
An archer, about to shoot an arrow, is applying a force of +250 N to a drawn bow string. The bow behaves like an ideal spring whose spring constant is 510 N/m. What is the displacement of the bow string?

physics
50.2=F X(1.17/1.84) = ans/50.2 F= 78.9N

physics
You are trying to lose weight by working out on a rowing machine. Each time you pull the rowing bar (which simulates the "oars") toward you, it moves a distance of 1.17 m in a time of 1.84 s. The readout on the display indicates that the average power you are ...

Physics
sqrt{2•0.411•9.8•5.22/0.262•8.46} = 4.37 m/s its still coming up wrong ?

Physics
Starting from rest, a 2.4x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.42 N on it. This force does 1.5x10-4 J of work on the flea. (a) What is the flea's speed when it leaves the ground...

physics

Physics
A 58.0-kg man is riding an escalator in a shopping mall. The escalator moves the man at a constant velocity from ground level to the floor above, a vertical height of 3.70 m. What is the work done on the man by (a) the gravitational force and (b) the escalator?

Math
Kimi bought d donuts. There were 4 donuts in each box. Write an expression that shows how many boxes of donuts Kimi bought.

Math
A piece of rectangular cloth has an area of 40 square feet. Its length is 3 feet longer than its width. If the width of the rectangular cloth is represented as x, which of the following represents the length?

Trigonometry
The angles of elevation of an office building as observed from the top and ground level of a 10 meters tall residential building are 68° and 72° respectively. How tall is the office building? How far apart are the two buildings?

Physics
A uniform 7.9-m plank weighing 130 N lies on a platform with 3.5 m jutting off the platform. How far out on the plank from the edge of the platform can a 31-N dog walk without tipping the plank?

chemistry
Consider the following reagents: zinc, copper, mercury (density: 13.6 g/mL), silver nitrate solution, nitric acid solution. a. Given a 500-mL Erlenmeyer flask and a balloon can you combine two or more of the foregoing reagents to initiate a chemical reaction that will inflate ...

intro to psychology
i think the only one wrong is c, am i correct

Spanish
Thank you Sra.

Spanish
The questions were recordings, this was the best I could gather from the recordings. The answers were multiple choice. 1. ¿Cantar en el coro el año pasado también? A. No, no sé tocar ningún instrumento. B. No. Yo era una de las solistas. C. S...