Questions Asked on
October 6, 2018

Math
Sally invests £8000 in a savings account . The account pays 2.8% compound interest per year . Work out the value of her investment after 4 years . Give your answers to the nearest penny .

Science
A density bottle weighs 0.25N when empty, 0.75N when filled with water and 0.65N when filled with alcohol.Calculate: a.volume of the bottle b.the density of alcohol.

chemistry
The specific heat capacity of iron is 0.45 j/g oC. how many joules of energy are needed to warm 1.3100000000000001 g of iron from 20.00oC to 29.00 oC ?

maths
the gcf of two numbers is 3 and lcm is 180.if one of the numbers is 45,what is the other number?

science
2. With an increase in altitude, air pressure: a. Increases at a constant rate b. Increases at a decreasing rate c. Decreases at a constant rate d. Decreases at a decreasing rate e. Decreases at an increasing rate answer: e 4. The addition of water vapor

Engineering Science
The meter reads 7.84 mA when the switch is in position A. What is the resistance of R4? R1=220 Ω R2=470 Ω R3=510 Ω VS =12 V I honestly have no clue how to solve this. Please help.

Probability
Bob has two coins, A and B, in front of him. The probability of Heads at each toss is p=0.5 for coin A and q=0.9 for coin B.Bob chooses one of the two coins at random (both choices are equally likely).He then continues with 5 tosses of the chosen coin;

probablity
Consider a group of n>=4 people, numbered from 1 to n. For each pair (i,j) with i!=j, person i and person j are friends, with probability p. Friendships are independent for different pairs. These n people are seated around a round table. For convenience,

Chemistry
Please I need your help in solving this. = A 0.3423g sample of pentane c5H12 was burned in a bomb calorimeter, the temperature of the calorimeter and the 1.00kg of water contained therein rose from 20.22°c to 22.82 °c. The heat capacity of the

algebra
3x4y =20 x10y= 16 If x,y is the solution to the system of equations above what is the value of x? A. 14 B. 12 C. 4 D. 16

math
The volume of a cone varies jointly as the square of its radius and its height. If the volume of a cone is 2 pi cubic inches when the radius is 1 inch and the height is 6 inches, find the volume of a cone when the radius is 5 inches and the height is 3

Math
Fawns between 1 and 5 months old have a body weight that is approximately normally distributed with mean μ = 25.5 kilograms and standard deviation σ = 3.1 kilograms. Let x be the weight of a fawn in kilograms.

Social Studies
Compare and contrast the views of the Federalist party and the DemocraticRepublican party on at least three different historical issues. So far I have a basic information on the Federalist party, but barely any on the DemocraticRepublican party, and I

maths
find the nearest degree, the size of each angle of a regular heptagon (seven sides)

Social Studies
1. Which of the following was an outcome of the Russian Revolution? A. The Bolsheviks seized power.*** B. The czar regained the throne. C. Russia developed a democracy. D. Russian dictatorship came to an end. 2. How might Germany react to the peace

probablity
Let be independent discrete random variables with E[X]=2, E[Y]=0, E[Z]=0, E[X^2]=20, E[Y^2]=E[Y^2]=16, and Var(X)=Var(Y)=Var(Z)= 16. Let A=X(Y+Z) and B=XY. 1.Find E[B]. 2.Find Var(B). 3.Find E[AB]. 4. are A and B independent? 5.Are A and B are

probablity
A set of 60 different days is selected from a given year. Assume that all sets of cardinality 60 are equally likely. Also, for simplicity, assume that the year has only 360 days, divided into twelve 30day months. Evaluate the probabilities of the

Physics
A projectile is fired at v0= 355.0 m/s at an angle of 68.7% with respect to the horizontal. Assume that air friction will shorten the range by 32.1%. How far will the projectile travel in the horizontal direction, R?

Probability
Let A,B,C be three events, and let X=Ia,Y=Ib, and Z=Ic be the associated indicator random variables. We already know that X.Y is the indicator random variable of the event A(intersection)B. In the same spirit, give an algebraic expression, involving X,Y

science
8. Atmospheric circulations are fundamentally caused by: a. The heating of the ozone layer b. The passage of frontal storm systems c. Ocean currents d. Earth’s gravity e. Unequal heating of Earth’s surface answer: e 11. In the Northern Hemisphere, the

English
How does establishing an emotional connection help persuade people to follow the speaker?

math
Senate Committee The U.S. Senate Select Committee on Ethics has six members. Each member is equally likely to services in any of the positions. What is the probability of randomly selecting the chairman and vice chairman?

college algebra
The number of unwatched shows in Sylvia's DVR is 90. The number grows by 15 unwatched shows per week. The function N(t) = 90 + 15t represents the relation between the number of unwatched shows, N, and the time, t, measured in weeks. a. Determine the

probablity
Let X,Y,Z be independent discrete random variables with E[X]=2, E[Y]=0, E[Z]=0, E[X^2]=20, E[Y^2]=E[Y^2]=16, and Var(X)=Var(Y)=Var(Z)= 16. Let A=X(Y+Z) and B=XY. 1.Find E[B]. 2.Find Var(B). 3.Find E[AB]. 4. are A and B independent? 5.Are A and B are

Maths
The difference between the first term and the second term in a geometric sequence is 6. The difference between the second term and the third term is 3. Calculate the difference between the third term and the fourth term. Thanks to anyone who helps

Business ethics
QUESTION ABC Bhd is a public listed company incorporated in Malaysia. (hereinafter referred to as ‘The Company’) whereby Mr. Alex Chong is the majority shareholder and director of the company. The Memorandum and Articles of the Association of the

math
The cottage will be built on a concrete slab 100 mm thick. Concrete costs $150/m^3 and reinforcing mesh for the slab costs $7/m^2. Find the cost of materials for the slab. Both the concrete and the reinforcing mesh will be ordered in lots of whole units.

English
Thank you for your help. 1. He enjoys jogging on Monday morning. 2. He will have a meeting on the morning of July 22. 3. He will have a meeting on the morning of July. 4. He will have a meeting in the morning of July. 5. He will have a meeting in the

Physics
2. An 8 lb weight attached to a spring exhibits simple harmonic motion. Determine the equation of motion if the spring constant is 4 lb/feet and the weight is released 4 inches above the equilibrium position with an upward velocity of 3 feet/sec.

chemistry
how many molecules are there in 0.32g of copper

chemistry
how many molecules are there in 0.32g of copper

Math
Naksh has a chart paper of dimension 60 by 80 she cuts out a piece from one of its corner measuring .20 m by .15 m. What is the area and perimeter of the remaining chart paper

Math
Al has secured an internship at a bank. He receives double pay for every hour he works over and above 38 hours per week. Last week, he worked 48 hours and earned £812. Formulate a linear equation for this scenario in terms of x, for Al's regular hourly

English
1. He is working in the building. 2. He is working at the building. [Is #2 wrong? Can we use 'at' in the sentence?] 3. The boy is waiting for me in the bathroom. 4. The boy is waiting for me at the bathroom. 5. The boy is waiting for me by the bathroom.

Math; Algebra
The table shows the outputs, y, for different inputs, x: Input (x) 13 5 7 Output (y) 8 6 5 4 Part A: Do the data in this table represent a function? Justify your answer. (3 points) Part B: Compare the data in the table with the relation f(x) = 4x + 8.

Math; Algebra
The table shows the outputs, y, for different inputs, x: Input (x) 1 3 5 7 Output (y) 8 6 5 4 Part A: Do the data in this table represent a function? Justify your answer. (3 points) Part B: Compare the data in the table with the relation f(x) = 4x + 8.

math
James travels 200m north then 350 south west. What is the bearing to the start point from the finish point?

biology
Why would a more diverse habitat be more resilient to disease, flooding, and invasion?

Math
find the number of term in an A.P given that its first and last term are a and 37a respectively and that its common difference is 4a

Math
The Party Company produce two types of party pack. Their “Ghastly” party pack contains 10 balloons and 64 sweets. Their “Devilish” party pack contains 20 balloons and 16 sweets. Each week, the company must use 3000 balloons and 8000 sweets in their

Social Studies
What led to sectionalism in the United States in the early 1800s? A. the increase in conflicts between the political parties B. the different economic interests of the regions C. the rise in conflicts over who can determine the constitutionality of laws D.

math
what are the factors of 1/6 2*** 3 4 5 6 7 8 Thanks

Math
solution to (4 x 10^3) x (6 x 10^6) written in scientific notation 24 x 10^9 2.4 x 10^9 THIS ONE 24 x 10^18 2.4 x 10 ^10

Social Studies
Illustrate the reasons for conflict between the superpowers by dragging and dropping the descriptions to the appropriate label. Soviet Cold War economy:: Government planners make all decisions. Private property is not allowed. command economy Private

college algebra
Charlie and Violet met for lunch at a restuarant between their two locations (exactly in the middle). It took Charlie 2.6 hours to get there, but it only took Violet two hours because she was driving 15 mph faster than Charlie. The distance between the two

college algebra
Dominic pays 5% interest on his $17000 college loan and 9% interest on his $15000 car loan. What average interest rate does he pay on the total $32000 he owes? Round your answer to the nearest tenth of a percent.

college algebra
Dominic pays 9% interest on his $22000 college loan and 11% interest on his $16000 car loan. What average interest rate does he pay on the total $38000 he owes? Round your answer to the nearest tenth of a percent.

college algebra
Macario is making12 pounds of nut mixture with macadamia nuts and almonds. Macadamia nuts cost $9 per pound and almonds cost $4.25 per pound. How many pounds of almonds and how many pounds of macadamia nuts should Macario use for the mixture to cost $74.75

Math
You are preparing mashed potatoes for Thanksgivings and the recipe calls for 6 ounces of cream cheese to be added to 1lb of mashed potatoes. What is the percent concentration of cream cheese in the final preparation (w/w)? My answer: 6 oz (30 gm/1 oz) =

math
At 1:30 Marlon left his house to go to the beach, a distance of 11.25 miles. He rose his skateboard until 2:15, and then walked the rest of the way. He arrived at the beach at 3:00. Marlon's speed on his skateboard is 2 times his walking speed. Find his

Math
Shelby has a new prescription for an albuterol inhaler. The directions say to use 12 inhalations every 46 hours as needed. The inhaler you dispense says that it provides 200 doses. What is the minimum number of days the albuterol inhaler would last for

Precalculus 11
I have kind of a general question... I'm working on a unit about solving systems of equations & I just feel like I've lost the general concept a little bit. When something says, "use your graphing calculator to solve the following systems of equations."

Maths
Find the total price to the nearest cent. $12 bracelet,markup:115%, sales tax=5%

math
Find the equation of a line containing the following points. Write the equation in slopeintercept form. (2,3) and (2,−2) My answer: y= 5x+8

college algebra
Find an equation of a line parallel to the given line and contains the given point. Write the equation in slopeintercept form. line x= 4, point (2,−1)

college algebra
Find an equation of a line perpendicular to the given line and contains the given point. Write the equation in slopeintercept form. line y+2= 0, point (1,−4)