Tuesday
December 6, 2016

Posts by Chris

Total # Posts: 2,663

math
The Washington monument is 555 feet high. If you are standing one quarter of a mile, or 1320 feet, from the base of the monument and looking at the top, find the angle of elevation to the nearest degree.
March 28, 2016

math
At a certain time of the day the elevation of the sun is 40 degrees. To the nearest foot, find the height of a tree whose shadow is 35 feet long.
March 28, 2016

Math troubles
I calculated them on my calculator so I borrowed my friends (since mine was messing up). I got P(x=3) = 5C3 .25^3 .75^2 = 0.008 P(x=4) = 5C4 .25^4 .75^1 = 0.003 P(x=5) = 5C5 .25^5 .75^0 = 0.0007 added up =0.01. Did I calculate correctly
March 27, 2016

Math troubles
There's 5 multiple choice questions on a quiz. Four choices to each question. Find the probability that the student gets 3 or more questions right. p(x=3) (.25)^3= 0.015 p(x=4) (.25)^4=3.906 p(x=5) (.25)^5=9.765 Do you add them all together to get the overall probability?
March 27, 2016

Statistics
There's 5 multiple choice questions on a quiz. Four choices to each question. Find the probability that the student gets 3 or more questions right. p(x=3) (.25)^3= 0.015 p(x=4) (.25)^4=3.906 p(x=5) (.25)^5=9.765 Do you add them all together to get the overall probability?
March 27, 2016

Social Studies PLS HELP!!!
Jury duty is A: a right because it is discussed in the u.s constitution B: a right because only some citizens are required to do it C: A responsibility because citizens do it to help protect other's rights D: A responsibility because judges cannot make decisions without ...
March 24, 2016

math
a nut mixture is made from two types of nuts: one type selling for 7.50/kg the other selling for 9.50/kg what mass of each type of nut should ne included in a 3 kg mixture that sells for 25
March 24, 2016

Chemistry
Using the Table of Thermodynamic Data calculate Kp at 500 K for the reaction 2 HI(g)-->I2(g) + H2(g) , if Kp at 300 K is 2.16x10-3 , assuming that delta H˚ is constant.
March 23, 2016

Chemistry
The Kp for the production of phosgene is 18.0. If one mole each of CO and Cl2 are mixed at the total pressure of 1 atm, what will be the partial pressure (in atm) of COCl2 after equilibrium is reached, CO(g) + Cl2(g)-->COCl2(g)
March 23, 2016

Chemistry
What is the entropy change of liquid glycol (in cal K-1 mol-1 ) when it freezes at -25 ˚C?the heat of fusion of glycol is 2688 cal mol-1 , and the specific heats of liquid and solid glycol are 33.8 and 20.1 cal K-1 mol-1 , respectively.
March 23, 2016

Maths
The probability a pupil takes a bus to school is 0.3. If a sample of 10 pupils are chosen at random. Using binomial distribution. Find the probability that a) exactly four pupils travel by bus. b) more than six pupils travel by bus.
March 20, 2016

ratios/algebra
During class elections 64 students voted for candidate A .if the ratio of votes for candidate a is to the votes for candidate B was 8:5,how many votes did candidate B receive?
March 14, 2016

Science
Heat ice from 20 to 32= 6BTUx5lb=30 Melt Ice at 32=144x5lb=720 Change temp of water from 32to160=128x5LB=640 30+720+640=1390 Correct? I think I got it. Thanks for the help. Cleared a lot of things up.
March 13, 2016

Science
How many Btu's are required to change five pounds of ice at 20°F to water at 160°F? a. 2,608 Btu’s b. 1,390 Btu’s c. 1,304 Btu’s d. 141 Btu’s I am trying ((160-20)x.5)x5 but not getting any of the possible choices. What am I missing? Thanks for ...
March 13, 2016

Maths
A drawer contains 8 brown socks and 4 black socks. A sock is taken a random from the drawer, its colour noted and replaced. This is done three times. If X is the discrete variable, the number of brown socks taken. Draw the probability distribution of X.
March 13, 2016

statistics
Case Study Chapter 6 and 7 FOR FULL CREDIT SHOW EQUATIONS USED AND WORK. ELEVATOR CAPACITY: Suppose an elevator has a maximum capacity of 16 passengers with a total weight of 2500 lbs. The mean weight of females is less than the mean weight of males so we will only look at ...
March 7, 2016

Math
need direction on part c. Rosa and her friend build & paint a tree house. On monday they paint 2/5 of the tree house. On tuesday they paint 3/7 of the house. A - painting of the house need to be finished on wednesday. how much more work do they have to do? 14/35 + 15/35=29/35 ...
February 29, 2016

physics
Calculate the heat given off by the hot water. GIVEN: Original quantity of water (hot water) 50g Orig.temperature :40°C Final temperature: 9°C Final quantity of water: 264g Increase in quantity of water 214g. PLEASE KINDLY SHOW ME THE EQUATION FOR THIS THANK YOU. <3
February 28, 2016

physics
Calculate the heat given off by the hot water. GIVEN: Original quantity of water (hot water) 50g Orig.temperature :40°C Final temperature: 9°C Final quantity of water: 264g Increase in quantity of water 214g. PLEASE KINDLY SHOW ME THE EQUATION FOR THIS THANK YOU. <3
February 28, 2016

physics
Calculate the heat given off by the hot water. GIVEN: Original quantity of water (hot water) 50g Orig.temperature :40°C Final temperature: 9°C Final quantity of water: 264g Increase in quantity of water 214g. PLEASE KINDLY SHOW ME THE EQUATION FOR THIS THANK YOU. <3
February 28, 2016

physics
Calculate the heat given off by the hot water. GIVEN: Original quantity of water (hot water) 50g Orig.temperature :40°C Final temperature: 9°C Final quantity of water: 264g Increase in quantity of water 214g. PLEASE KINDLY SHOW ME THE EQUATION FOR THIS THANK YOU. <3
February 28, 2016

microeconomics
4.00 or less .
February 27, 2016

N/A
The most basic software required for an online course where writing is involved is:
February 23, 2016

Chemistry
How many mL of 1.2 M HCl is needed to react with 5.8 g of Al(OH)3
February 18, 2016

science
A feather is dropped on the moon from a height of 1.40meters.The acceleration of gravity on the moon is 1.67m/s^2.Determine the time for the feather to fall to the surface of the moon.
February 18, 2016

Math
Kathy is y years old Find her age,if 1/2 of wat she was 3 years ago is equal to 1/3 of what she will be in 4 years time
February 16, 2016

Assessment
Authentic and performance assessments strive for greater realism and complexity of tasks under the premise that real-life problems can often be solved ______________.
February 14, 2016

Math
If Sam has 6 apples and Linda takes 12 apples how many apples does Jesica have?
February 9, 2016

Trigonometric
A woman standing on a hill sees a flagpole that she knows is 55 ft tall. The angle of depression to the bottom of the pole is 14°, and the angle of elevation to the top of the pole is 18°. Find her distance x from the pole.
February 7, 2016

Physics
A bat moving at 5 meters per second is chasing a flying insect, if the bat emits a 40 khz chirp and receives back an echo at 40.4 khz what is the speed of the insect and will the bat be able to catch the insect?
February 2, 2016

Math
I got A and B but i need C Suppose a ship is sailing at a rate of 35km/h parellel to a straight shoreline. The ship is 10km from shore when it passes a lighthouse at 11am. a) Let k be the distance between the lighthouse and the ship. Let d be the distance from the ship has ...
February 1, 2016

Math
I got A and B but i need C Suppose a ship is sailing at a rate of 35km/h parellel to a straight shoreline. The ship is 10km from shore when it passes a lighthouse at 11am. Question 6 a) Let k be the distance between the lighthouse and the ship. Let d be the distance from the ...
February 1, 2016

COMP1
Heading back to the states but on edge since he survived the tsunami FRAGMENT OR NO
January 31, 2016

Math
wait I'm confused with c what do i do or put
January 27, 2016

Math
So b) i would just say d=35km *t
January 27, 2016

Math
Thank you guys both of you!
January 27, 2016

Math
Someone answer all of this clearly, I don't get it at all. Suppose a ship is sailing at a rate of 35km/h parellel to a straight shoreline. The ship is 10km from shore when it passes a lighthouse at 11am. Question 6 options: a) Let k be the distance between the lighthouse ...
January 27, 2016

Science
A tank which is raised above the ground level, has a hole in its flat base, through which water flows and falls to the ground below. If the depth of water in the tank is 0.5 m and the tank base is 0.7 m above the ground, what is the fluid velocity (u) (m/s) just before it ...
January 27, 2016

Math
Someone answer all of this clearly, I don't get it at all. Suppose a ship is sailing at a rate of 35km/h parellel to a straight shoreline. The ship is 10km from shore when it passes a lighthouse at 11am. Question 6 options: a) Let k be the distance between the lighthouse ...
January 26, 2016

Math
whats the composite function of these two equations and its domain and range f(x)=2^x and g(x)=3-x
January 25, 2016

Math
The answer is 306.
January 25, 2016

Math
Can you explain or show me how to do this problem: Mary bought 8 1/2 yards of ribbon. How many inches did she buy?
January 25, 2016

chemistry
How much energy is absorbed to change 7.25 g of ice at -3 C to 25.5C?
January 25, 2016

Math
Edit for g(x) i mean g(x)=3-x
January 25, 2016

Math
How about this idk if im right for this part F(x)=2^x g(x)=y-x
January 25, 2016

Math
What is the composite function of 3x^2-5x+6 and x^2+3x and what is its domain and range
January 25, 2016

Math
Help me for this question on composite functions Does the composition of functions display the commutative property? Give an example of each case to illustrate your answer.
January 24, 2016

Math
If a1,a2,…,a100 are real numbers such that a1=1 and a100=.01, evaluate ∑(j=1 to 99) (aj−aj+1).
January 14, 2016

Math
Finding the composite function
January 13, 2016

Math
Question 1 A) f(x)=2^x and g(x)=3−x I got 3x^2+12 don't know if im right B) i need help for this f(x)=sinx and g(x)=x
January 13, 2016

Math
We need help putting these fractions from greatest to least 2/3 3/4 1/2 8/10
January 12, 2016

Math
When I convert 400 quarts to 4000 Cups would the answer be 400 qt= 1600 cups and 4000 C < 400 qt?
January 10, 2016

Math
is the answer 4000 cups < 400 quarts because 400 quarts= 1600 Cups? Is it right?
January 10, 2016

Math
i have this so far 8=-8cos(pi/30(0-y))+8
January 6, 2016

Math
the value
January 6, 2016

Math
how can i solve for y value with this equation f(x)=-8cos(pi/30(x-y))+8
January 6, 2016

Math
Change the cos function into a sin function d(t)= -8cos (pi(t)/30)+8
January 6, 2016

Math
i mean the y value,change it to sin function
January 6, 2016

Math
Solve for d D(t)= -8cos (pi(t)/30)+8
January 6, 2016

Math
solve for d i mean
January 5, 2016

Math
Error I mean for d
January 5, 2016

Math
how do i solve for t and turn this equation into a sin function d(t)=-8cos(pi(t)/30)+8
January 5, 2016

Math
For each of the functions below, state the domain and range, the restrictions, the intervals of increasing and decreasing, the roots, y-intercepts, and vertices. a) f(x)=2x(^2)−8 b) f(x)=+√x-2
January 3, 2016

English 3
A verb must agree with its subject in number
January 3, 2016

Math Exponetial Function Problem Question?
Thank you so much damon!!
January 2, 2016

Math Exponetial Function Problem Question?
Im confused if im doing this right Last week there was an earthquake that measured as a magnitude of 3.2 on the Richter scale. Today you hear on the radio that there was a second earthquake that was 27 times more intense than the first. What was the magnitude of the second ...
January 2, 2016

Math
*86.4 i mean
January 2, 2016

Math
Are you sure this is right,someone told me since to get magmitude of the second i have to multiply 27 by first earthquake which is 3.2 27(3.2)=84 Im confused
January 2, 2016

Math
Ok,thanks!
January 2, 2016

Math
solve for x using logarithms round your answer to four decimal places. a)2^2x+3=80
January 2, 2016

Math
So i guess my answer is acceptable right :)
January 2, 2016

Math
For a)
January 2, 2016

Math
Okay i was wondering because some people told me the answer is log(f(x))=2xlog(3)
January 2, 2016

Math
I don't if I'm right for these two questions i just need a check if I'm right,if I'm wrong please show me how to get that answer. Rewrite the following exponential functions as logarithmic functions a)f(x)=9^x ans:f(x) Log^-1(xlog(9)) b)f(x)=(7/8)^x ans:log^-1(...
January 2, 2016

Math Logarithmic Question
Solve for all possible values of x within the domain of the following logarithmic expressions. a)logx+log2=log7−log3
January 1, 2016

Math
Logrithmetic Problem question Last week there was an earthquake that measured as a magnitude of 3.2 on the Richter scale. Today you hear on the radio that there was a second earthquake that was 27 times more intense than the first. What was the magnitude of the second ...
January 1, 2016

Math
Exponetial Functions In the following exponential relations, solve for x using logarithms. Round your answers to 4 decimal places. a) 5^3x=65 b) 2^2x+3=80
January 1, 2016

Math
error i mean f(x)=(2)^x-7
December 31, 2015

Math
For the following function, state: i. the domain and range ii. the y-intercept, and iii. the horizontal asymptote f(x)=(2)x−7
December 31, 2015

Math
Describe the Transformations For Each Function a)f(x)=3sin(1/2x+pi/2)+1 b)-1/3cos(2x-pi)-2
December 25, 2015

Math
The temperature, throughout the year, in a particular town can be graphed using trigonometric functions. On July 24th, the hottest day of the year, the temperature is 27 degrees Celsius. On Jan. 24th, the coldest day of the year, the temperature is -11 degrees Celsius. ...
December 22, 2015

Trignometric Functions
The temperature, throughout the year, in a particular town can be graphed using trigonometric functions. On July 24th, the hottest day of the year, the temperature is 27 degrees Celsius. On Jan. 24th, the coldest day of the year, the temperature is -11 degrees Celsius. ...
December 22, 2015

math
You put $1,000 into a savings account today that offers a 5% APR with semi-annual compounding (i.e., two times per year).
December 22, 2015

math
What is the effective annual rate on the loan? (I.e., what is the interest rate once we take into account compounding?)
December 21, 2015

math
$400,000 for 30-years at a fixed APR of 3.87%. The loan payments are monthly and interest is compounded monthly.
December 21, 2015

Math
For a stat class the mean of the midterm is 75 with a standard deviation of 7. What percentage of students scored between 67 and 83
December 21, 2015

Marketing
We want to advertise a service that we can use the phrase "Save 40! Either % or $ - You Choose. What would the retail amount of that service be if the amount of savings in dollars were 40 and the percent savings were 40? Assume zero cost. List price and sell price would ...
December 16, 2015

physics
A golf ball is dropped from rest from a height of 8.30 m. It hits the pavement, then bounces back up, rising just 5.00 m before falling back down again. A boy then catches the ball when it is 1.10 m above the pavement. Ignoring air resistance, calculate the total amount of ...
December 16, 2015

physics
A model rocket blasts off from the ground, rising straight upward with a constant acceleration that has a magnitude of 90.3 m/s2 for 1.75 seconds, at which point its fuel abruptly runs out. Air resistance has no effect on its flight. What maximum altitude (above the ground) ...
December 16, 2015

physics
A golfer rides in a golf cart at an average speed of 3.93 m/s for 43.3 s. She then gets out of the cart and starts walking at an average speed of 1.13 m/s. For how long (in seconds) must she walk if her average speed for the entire trip, riding and walking, is 1.99 m/s?
December 16, 2015

physics
A projectile is launched from and returns to ground level, as the figure shows. There is no air resistance. The horizontal range of the projectile is measured to be R= 166 m, and the horizontal component of the launch velocity is v0x = 26.0 m/s. Find the vertical component v0y...
December 16, 2015

physics
Traveling at a speed of 16.5 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 0.590. What is the speed of the automobile after 1.35 s have elapsed? Ignore the effects of...
December 16, 2015

Business Math
Mortgage lenders base the mortgage interest rate they offer you on your credit rating. This makes it financially critical to maintain a credit score of 700 or higher. How much more interest would you pay on a $193,000 home if you put 20% down and financed the remaining with a ...
November 29, 2015

math
if 75 widgets are processed in 3.5 hours by 1 person, how long will it take to process 1650 widgets using 9 people.
November 23, 2015

algebra
No. 2 alyssa has some coins in her purse consisting of pennies, nickels and dimes. She has 2 more nickels than dimes and thrice as many pennies as nickels. If the total is 0.52 dollars how many coins of each kind does she have.
November 20, 2015

Math
△ = Triangle If △ABC is similar to △DEF, and angle A is 62 degrees, angle B is 13 degrees, find the measure of angle F. (Also I don't want just the answer, I also want to know how to actually do it so I will know how to do this.)
November 17, 2015

Physics 1
A car manufacturer claims that you can drive its new vehicle across a hill with a 47 degree slope before the vehicle starts to tip. If the vehicle is 2.0 meter wide, how high is its center of gravity?
November 15, 2015

Triganometry
To measure a stone face carved on the side of a mountain, two sightings 407 feet from the base of the mountain are taken. If the angle of elevation to the bottom of the face is 36 degrees and the angle of elevation to the top of the face is 67 degrees, what is the height of ...
November 13, 2015

MATH HELP
What types of numbers are these (Natural, Whole, Integer, Rational, Irrational or Real) 1. 0.020220222 2. 4.4/1.1 3. ãã169 4. -3.222 5. 1.3131313... 6. 5.2/.13 7. 5.1011011101110... 8. 6pi/5pi 9. 45pi/9 10. ã-9 Thanks for the help
November 11, 2015

Math
A bag contains 9 red marbles, 8 white marbles, and 6 blue marbles. You draw 4 marbles out at random, without replacement. What is the probability that all the marbles are red? What is the probability that exactly two of the marbles are red? The probability that exactly two of ...
November 11, 2015

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