# Sandy

Newest questions and responses by Sandy-
## calculus

Consider the graph of the cosine function shown below. y=4 cos (2 x) a. Find the period and amplitude of the cosine function. b. At what values of θ for 0 ≤ θ ≤ 2π do the maximum value(s), minimum value(s), and zeros occur? so i don't know how to

*asked on February 4, 2019* -
## trig

a ferris wheel with a radius of 14m makes one revolution every 30 seconds. the bottom of the wheel is 2.5m above the ground. a) find the equation b) how does the equation change if the graph starts at the centre of rotation

*asked on December 9, 2018* -
## Math

this data represents 12 scored on a math test: 1,5,9,10,16,16,22,23,25,30,33,34 the cut-off for.the upper quartile lies between which two scores?

*asked on October 1, 2018* -
## Algebra

Provide an appropriate response. Suppose that A and B are two matrices such that A + B, A - B, and AB all exist. What can you conclude about the dimensions of A and B? A) A is a row matrix and B is a column matrix. B) A and B have the same dimension, but

*asked on July 30, 2018* -
## math

A $76,000 trust is to be invested in bonds paying 8%, CDs paying 7%, and mortgages paying 10%. The bond and CD investment must equal the mortgage investment. To earn a $6670 annual income from the investments, how much should the bank invest in bonds? A)

*asked on July 30, 2018* -
## math

A plane makes a 240-mile trip against a head wind in 1 hour and 30 minutes and returns, with a tail wind of the same speed, in 1 hour. What is the speed of the wind? A) 80 mph B) 200 mph C) 40 mph D) 160 mph

*asked on July 30, 2018* -
## Algebra

How much will you have accumulated, if you annually invest $1,500 into an IRA at 8% interest compounded monthly for 40 years?

*asked on July 29, 2018* -
## math

How much will you have accumulated, if you annually invest $1,500 into an IRA at 8% interest compounded monthly for 5 year?

*asked on July 29, 2018* -
## Social Studies

Discuss the relationship between institutions (banks, business firms, government agencies, and unions) when it comes to making up an economic system. I couldn't find anything in google or my textbook, and if a full answer is cheating maybe just a little

*asked on May 28, 2018* -
## World Studies

Portugal refused to sponsor him, but Columbus persuaded Ferdinand and Isabella of What to his voyage.

*asked on November 22, 2017* -
## Algebra or Math help

Your friend thinks that the equation k - 3.5 = 21 is a true statement. Is your friend correct? Explain why and how you figured it out

*asked on November 8, 2017* -
## Math

the interest rate on car loans increase from 8% to 9%. although this is a rise of only 1 percentage point, you will be paying ____% more in interest on you loan. If you interest payment was $400, what would it be with the increase?

*asked on September 26, 2017* -
## STATISTICS

90% CONFIDENCE FOR THE MEAN TIME TO COMPLETE A TEST. POPULATION STANDARD DEVIATION OF 3 HOURS. SAMPLE SIZE IF THE ERROR SHOULD BE LESS THAN A HALF HOUR?

*asked on June 20, 2017* -
## Calc

FInd the derivative of each of the following function. f(x)=xcosx+x^4e^2x All I know is the rule with the e^u equation where you would do e^2x times 1. other than that I dont know what to do can someone please help and show all work I will appreciate it

*asked on June 14, 2017* -
## Math

Debbie flipped a coin 20 times. The result were 7 heads and 13 tails. What is the relative frequency of heads for her experiment?

*asked on May 14, 2017* -
## Math

The area of a trapezoid is 720 cm square. The height is 10 cm. The two bases of the trapezoid are parallel. Find the length of each base, if one base is 3 times as long as the other.

*asked on May 8, 2017* -
## education

I need help finding a local public policy web site and federal public policy website on foster care.

*asked on April 23, 2017* -
## quick question

Are muscials considered plays?

*asked on March 12, 2017* -
## pre calc

The population of a Midwestern city decays exponentially. If the population decreased from 900,000 to 800,000 from 2003 to 2005, what will be the population in 2008? Please help I got 670,422 and the computer marked it wrong i then tried rounding it to

*asked on March 11, 2017* -
## pre calc

The population of a Midwestern city decays exponentially. If the population decreased from 900,000 to 800,000 from 2003 to 2005, what will be the population in 2008? Please help I got 670,422 and the computer marked it round i then tried rounding it to

*asked on March 11, 2017* -
## Math

The volume of this cube is 343 cubic yards. What is the value of t?

*asked on March 2, 2017* -
## Math

A positive integer is 2 less than another. If the sum of the reciprocal of the smaller and twice the reciprocal of the larger is 5/12, then find the two integers. algebraic expression is: 1/n-2 + (2)1/n = 5/12

*asked on February 16, 2017* -
## Algebra

-9 times the difference between a number and 63 is equal to the number plus 49 .Write the equation.

*asked on February 4, 2017* -
## math

On December 10, 1999, Apple Computers' stock was valued at $615 billion; Microsoft's stock was valued in that quarter at $271 billion. How much more value is Apple's stock at its peak over Microsoft?

*asked on February 4, 2017* -
## Math

An employee's annual salary was increased from $22,464.00 to $24,710.40 last year.If it is increased by the same percent this year,what will be the employee's salary? Thanks!

*asked on October 28, 2016* -
## Math

12%+17%+3%=0.144612 The correct answer is 32% Please break it down to me where I can understand it. Thanks

*asked on October 28, 2016* -
## ashworth

If the manager __________ here, we could meet the person who __________ all loans. A. were; approves B. was; approves C. were; approve D. was; approve

*asked on October 9, 2016* -
## algebra

For three consecutive odd integers, the sum of 3 times the first integer and 2 times the second integer is 77 less than 4 times the third integer. What are the three integers? Please show work thank of you

*asked on September 13, 2016* -
## science

calculate the mass of 120 cc of nitrogen at NTP. How many number of molecules are present in it?

*asked on August 10, 2016* -
## Math

Matchstick Rings each pattern of square rings has been made with matchsticks which are all the same length. If the length of one side of a square ring is "m" matchsticks, try to find a formula, in terms of m, for each of the following: a) The outer

*asked on August 2, 2016* -
## Math

Building Bricks A child is playing with building bricks like this one. He decides to build the simple tower shown. How many bricks would he need to build this tower? If the last column was 14 bricks high how many bricks would he need? If the last column

*asked on August 1, 2016* -
## MATH

A beautiful Princess is locked inside the Castle. A Moat 15 metres wide surrounds the Castle. A Knight is attempting to rescue the Princess but he only has two planks of wood, both 14.5 metres long. How can the brave Knight bridge the Moat and rescue the

*asked on July 11, 2016* -
## Math of investigation

Two identical circles are to be cut from a 12cm by 9cm sheet of paper. What is the maximum possible radius of these circles? Show that if the length of the sheet of paper is twice the breadth of the paper, then the radius of the largest circles which can

*asked on July 4, 2016* -
## SOO URGENTT

A circular loop lies with its plane normal to a magnetic field given by B=(0.200 - 0.0200t) T, where t denotes the time in seconds. The induced emf in the loop is 1.36 V. Calculate the radius of the loop.

*asked on June 21, 2016* -
## 11

SinA + sinB/sinA - sinB= tanA+B/2cotA-B/2

*asked on June 5, 2016* -
## Maths

How would the perimeter be affected if the side of the rectangle were increased by a factor

*asked on May 15, 2016* -
## Math

What the relationship that happens between the increase of the length of the side and area or perimeter

*asked on May 15, 2016* -
## Math

36 miles per gallon to miles per quart. (1 gal=4 qt)

*asked on May 10, 2016* -
## Math

Ed is thinking of. number. If he adds four to his number, the result is less than 6. Write and solve an inequality about Ed's number

*asked on May 10, 2016* -
## Math

In 35 minutes, 49 customers entered the store. At this rate, how many customers will enter the store in 2 hrs?

*asked on May 9, 2016* -
## Chemistry

What is mass in grams of a pure iron cube that has a volume of 4.10 cm3

*asked on April 29, 2016* -
## science

when copper metal is added to silver nitrate in solution, silver metal and copper (II) nitrate are produced. what mass of silver is produced from 100.g Cu?

*asked on April 19, 2016* -
## Operations with Integers

On a summer day, the low temperature of 75°F was reached at 6 am. The high temperature was reached 9 hours later, after the temperature rose 16°F. What was the high temperature that day?

*asked on April 3, 2016* -
## Math

An automobile manufacturing plant produces cars according to a fixed pattern. During one day, the first five cars have the following colors and equipment. blue with a stereo and dark interior white with a stereo and light interior green without a stereo

*asked on March 17, 2016* -
## Marh

An automobile manufacturing plant produces cars according to a fixed pattern. During one day, the first five cars have the following colors and equipment. blue with a stereo and dark interior white with a stereo and.light interior- green without a stereo

*asked on March 16, 2016* -
## Math - Help!

The sample space for a roll of two number cubes is shown in the table. (1,1)|(1,2)|(1,3)|(1,4)|(1,5),(1,6) (2,1)|(2,2)|(2,3)|(2,4)|(2,5)|(2,6) (3,1)|(3,2)|(3,3)|(3,4)|(3,5)|(3,6) (4,1)|(4,2)|(4,3)|(4,4)|(4,5)|(4,6) (5,1)|(5,2)|(5,3)|(5,4)|(5,5)|(5,6)

*asked on February 26, 2016* -
## Algebra

Can someone help me with this? You have 2 tests with scores of 83 and 92, assuming you can't get a score over 100 on any test. Determine all possible scores you can get to score an average of 90 on all 3 tests. Represent the answer algebraically.

*asked on February 26, 2016* -
## One Math

The sample space for a roll of two number cubes is shown in the table. (1,1)|(1,2)|(1,3)|(1,4)|(1,5),(1,6) (2,1)|(2,2)|(2,3)|(2,4)|(2,5)|(2,6) (3,1)|(3,2)|(3,3)|(3,4)|(3,5)|(3,6) (4,1)|(4,2)|(4,3)|(4,4)|(4,5)|(4,6) (5,1)|(5,2)|(5,3)|(5,4)|(5,5)|(5,6)

*asked on February 25, 2016* -
## Are all answers right?

The sample space for a roll of two number cubes is shown in the table. (1,1)|(1,2)|(1,3)|(1,4)|(1,5),(1,6) (2,1)|(2,2)|(2,3)|(2,4)|(2,5)|(2,6) (3,1)|(3,2)|(3,3)|(3,4)|(3,5)|(3,6) (4,1)|(4,2)|(4,3)|(4,4)|(4,5)|(4,6) (5,1)|(5,2)|(5,3)|(5,4)|(5,5)|(5,6)

*asked on February 25, 2016* -
## Help Math

*asked on February 25, 2016* -
## Check math please!

Anna mixes the letters S, E, L, E, C, T, E, and D thoroughly. Without looking, Mary draws one letter. Expressed as a fraction, decimal, and percentage, what is the probability that E will NOT be the letter Mary selects? A. 3/8, 0.375, 37.5% B. 8/5, 1.6,

*asked on February 25, 2016* -
## Check math please!

Anna mixes the letters S, E, L, E, C, T, E, and D thoroughly. Without looking, Mary draws one letter. Expressed as a fraction, decimal, and percentage, what is the probability that E will NOT be the letter Mary selects? A. 3/8, 0.375, 37.5% B. 8/5, 1.6,

*asked on February 25, 2016* -
## art

why did Picasso use cubism/ shapes in weeping woman?

*asked on January 28, 2016* -
## math

Amanda can run 4/5 of a mile in 9 minutes.Express her speed as a unit rate in miles per hour.

*asked on January 21, 2016* -
## math

input 10 output 5 input 15 output 6 input 20 output 7 input 25 output 8 what is the pattern thanks

*asked on January 13, 2016* -
## Math

Hillside has 12 teams. Each team plays each other teams twice. How many games are played?

*asked on December 16, 2015* -
## Math

The ski trip has to be cancelled. All 28 people must be told. In the first hour 2 people each call 2 people. The next hour each of the people called the hour before calls 2 people, and so on. How many hours will it take for all 28 people to be called?

*asked on December 16, 2015* -
## MATH

help with expanding log base 5(x^2 times y)^4

*asked on December 2, 2015* -
## Math

Finneas plays with his toy mouse for 1/10 hour. then he chases a fly for 1/6 hour. How much longer does he spend chasing a fly than playing with his toy mouse?

*asked on November 17, 2015* -
## Math

A computer screen measures 200mm by 150mm. What is the length of the diagonal?

*asked on October 22, 2015* -
## Math

A square television screen has 19-inch diagonal. How long is a side of the screen, to the nearest tenth? Length of side______ Area_____

*asked on October 21, 2015* -
## Math

A square television screen has 19-inch diagonal. How long is a side of the screen, to the nearest tenth? Length of side______ Area_____

*asked on October 21, 2015* -
## Math

The student council sold refreshment at cost. A case of 24 cans of the fruit punch cost $7.68. Each can fills 1 cup of punch. A box of 48 cups cost $1.44. How much did the council charge for a cup of fruit punch?

*asked on October 20, 2015* -
## physics

A box containing food supplies for a refugee camp was dropped from a helicopter flying horizontally at a constant elevation of 414.1 m. If the box hit the ground at a distance of 95.3 m horizontally from the point of its release, ... a) what was the speed

*asked on October 16, 2015* -
## math

From the top of a light house the angle of incidence of the two ships are 45&30 degree respectively if both the ships are at a distance 200m from each other then find out the height of the light house

*asked on October 16, 2015* -
## Math

The odometer on a car shows 26962 km. Notice that this number is a palindrome. After the car has travelled two hours at a constant rate, the odometer shows the next possible palindromic number. How fast is the car travelling?

*asked on September 23, 2015* -
## community psycology

How each of “the four acts of qualitative research” would apply to you personally if you was doing this study. for prescription drug addiction

*asked on September 17, 2015* -
## physics

When a car moves up an incline, does the kinetic energy and potential energy decrease or increase?

*asked on September 11, 2015* -
## algebra i

two rubber balls are dropped from two different heights 136 ft and 287 ft. Find the function that describes them. I believe it is H(t) = -16t^2 + 136 and H(t) = -16 ^2 + 287. There are no answers in the book . I assumed velocity is 0. Am I correct? Thanks,

*asked on August 8, 2015* -
## Math quadratic function

Jose bautista hits a baseball that travels for 142m before it lands. The flight of the ball can be modelled by a quadratic function in which x is the Horizontal distance the ball has travelled away from jose, and h(x) is the height Vertical distance of the

*asked on July 23, 2015* -
## Math grade 11 uni

Jose bautista hits a baseball that travels for 142m before it lands. The flight of the ball can be modelled by a quadratic function in which x is the Horizontal distance the ball has travelled away from jose, and h(x) is the height Vertical distance of the

*asked on July 23, 2015* -
## Math grade 11 u

Jose bautista hits a baseball that travels for 142m before it lands. The flight of the ball can be modelled by a quadratic function in which x is the Horizontal distance the ball has travelled away from jose, and h(x) is the height Vertical distance of the

*asked on July 22, 2015* -
## Politics

Which of the following statements about interest groups is correct?

*asked on July 8, 2015* -
## Math

I have no idea how to do inverse functions... How would I do this question? Y=-3x^2 - 18x - 25

*asked on June 21, 2015* -
## physics

A bullet is fired through a wooden board with a thickness of 10.0 cm. The bullet hits the board perpendicular to it, and with a speed of +390 m/s. The bullet then emerges on the other side of the board with a speed of +234 m/s. Assuming constant

*asked on May 21, 2015* -
## 6th grade math

Mrs Roberts is 3 times as old as her son. The sum of their ages is 48 years. How old was Mrs. Roberts when her son was born?

*asked on May 20, 2015* -
## 4th Grade Math

The ratio of the number of dogs to the number of cats at an animal shelter is 5:4, if there is a total of 153 cats and dogs, how many cats are in the shelter

*asked on May 20, 2015* -
## Math

Kenji has a box containing many blue rods, each one 252 cm long. Mei-Ling has a box containing many green rods, each one 408 cm long. They each start making a long line of rods of their colour by laying rods end to end. After a while, their lines are

*asked on April 22, 2015* -
## MATH

Really need help with this: You purchase a computer for $875.00 plus 5% sales tax. You decide to finance it through the store's 0% program for 12 months. The terms state that you must pay $100.00/month and that if you miss a payment, you will be assessed a

*asked on April 21, 2015* -
## Math

Really need help with this: You purchase a computer for $875.00 plus 5% sales tax. You decide to finance it through the store's 0% program for 12 months. The terms state that you must pay $100.00/month and that if you miss a payment, you will be assessed a

*asked on April 20, 2015* -
## MATH

You purchase a computer for $875.00 plus 5% sales tax. You decide to finance it through the store's 0% program for 12 months. The terms state that you must pay $100.00/month and that if you miss a payment, you will be assessed a late fee of $39.00 plus the

*asked on April 20, 2015* -
## Math

You purchase a computer for $875.00 plus 5% sales tax. You decide to finance it through the store's 0% program for 12 months. The terms state that you must pay $100.00/month and that if you miss a payment, you will be assessed a late fee of $39.00 plus the

*asked on April 19, 2015* -
## MATH

Suppose that you work at the Peacock Blue store for 40 hours over five days at a rate of $9.25/hour. You then quit your job. Deductions are FICA (7.65%), federal withholding (12%), and state withholding (8%). Your expenses are transportation at $5.25/day,

*asked on April 16, 2015* -
## leal aspects of health information

Name the types of fraudulent billing.

*asked on April 12, 2015* -
## legal aspects of health information

Dr. Pearson has recently been hired into the Central City Internal Medicine Group as its fifth physician. He has recently completed his residency and is eager to enter private practice. Dr.Pearson is introduced to Meredith and Dawn, two members of the

*asked on April 11, 2015* -
## legal aspect of health information

is Dr. Pearson subject to liability although he doesn't know Meridith is conducting fraud activities

*asked on April 11, 2015* -
## physical science

Picnickers see a lightning flash and hear the resulting thunder 9.0 s later. If the storm is traveling at a rate of 15 km/h, then how long, in minutes, do the picnickers have before the storm arrives at their location?

*asked on March 10, 2015* -
## Chem

Copper(I) chloride has Ksp = 1.7 × 10-7. Calculate the molar solubility of copper(I) chloride in (a) 0.0858M HCl solution (b) 0.419 M HCl solution (c) 0.653 M CaCl2 solution

*asked on March 4, 2015* -
## Math- MDM4U data Managment

How do you solve this question. I literally have no idea on where to start. "If the mean of the following numbers is /7, find the c value. Produce an algebraic solution. Numbers: 12, 18, 21, c, 13 Please help.

*asked on March 2, 2015* -
## Maths

Runner A speed 1km/hour Runner B speed 2km/hour They start of at the same point at the oval.In a lap that is 500m, how many times will they meet at the starting point after 10 hours. I managed to get the LCM for runner A,B using the time taken to complete

*asked on February 11, 2015* -
## Art

What advantage does multi-spectral analysis hold over the X-ray Machine? a. Multi-spectral analysis can analyze pigments that an X-ray cannot detect b. multi-spectral analysis reveals what is not visible to the naked eye c. multi-spectral analysis can be

*asked on January 27, 2015* -
## Art

You would use different criteria to analyze different styles of art for all of the following reasons except A. the styles have different stylistic qualities. B. the expected skill set of the artists may vary. C. the subject matter may be drastically

*asked on January 23, 2015* -
## Chemistry

A sealed container comtains 1.50 mol of nitrogen gas, 2.00 mol of oxygen gas and 3.50 mol of argon gas. If the total pressure is 900 kPa, what is the pressure of the nitrogen gas?

*asked on January 18, 2015* -
## chemistry

A 5.0 L sample of nitrogen gas has a pressure of 95 kpa. What is the final volume of the gas if the pressure is tripled? I know p1 = 95, v1=5.0 and p2 = tripled What i don't understand is what number is tripled, is it 95 times 3??

*asked on January 14, 2015* -
## DrBob222 my previous question

You asked me to show my work for one of my questions a few minutes ago and i need you to verify my work because you said my answer was wrong

*asked on January 12, 2015* -
## chemistry check my answer

In an acid base titration 32.5 ml of sodium hydroxide were neautralized by 17.6 ml of 0.180 mol/l sulfuric acid. Calculate the concentration of the sodium hydroxide. I asked this question earlier but i wanted to make sure i got the right answer My answer:

*asked on January 12, 2015* -
## Science help please

Use the word bank below to answer the questions that follow: conservation carbon footprint decompose slower renewable biodegradable desertification fossil fuels aquaculture hydroelectric geothermal ozone land reclamation point decompose faster nuclear

*asked on January 8, 2015* -
## Language arts check answers

If you fail to plan, you plan to fail. simple complex compound

*asked on January 7, 2015* -
## Math

Write the sum (in sigma notation) 1 + 3/2 + 2 + 5/2 + 3 + 7/2 + 4 Sigma notation?

*asked on December 15, 2014* -
## Science one question!

Explain how gravitational, electrical and magnetic force act on a maglev train? I just need help on magnetic thanks!

*asked on December 2, 2014*