# Matt

Newest questions and responses by Matt-
## math

Question Part Points Submissions Used You have been hired as a marketing consultant to Johannesburg Burger Supply, Inc., and you wish to come up with a unit price for its hamburgers in order to maximize its weekly revenue. To make life as simple as

*asked on March 15, 2019* -
## Science

How does energy drive the cycling of matter by thermal convection?

*asked on March 13, 2019* -
## Math

The rectangle shown is reduced by a scale factor of 0.5 AB= 16 and AC=6. A___15cm______B 8cm C______________D Calculate the length of each side of the reduced image. Draw the new image A' B' D' C'

*asked on March 3, 2019* -
## Calculus

Question: gyazo.com/c8fe92564a8387ffc127233f6ad989a9 My work: gyazo.com/27caca9994d03409268162130c61ce08 (I understand how to do trapezoidal approximation, but how would I go bout this while using only 4 sections?)

*asked on February 24, 2019* -
## Calculus

For these questions gyazo.com/d0950b43c16f5cf91d2db25e4d527b68 gyazo.com/47b9c66487d55f11ba22b65fc2285cf9 The link you sent had 3t^8 - 2t^5 as the answer to the first one, what answer choice does that match up with? Also, how do I find the answer for the

*asked on February 24, 2019* -
## Calculus

How do you solve these two questions? Answer and Explanation Please! gyazo.com/d0950b43c16f5cf91d2db25e4d527b68 gyazo.com/47b9c66487d55f11ba22b65fc2285cf9

*asked on February 24, 2019* -
## Government

Has the Supreme Court acted legitimately in creating and interpreting the right of privacy? Use Case law to justify.

*asked on January 29, 2019* -
## Geometry

I need some help with this proof. This is the image link: h t t p s : / / p a s t e b o a r d . c o / H X I F 4 FJ . p n g The given is : C is the intersection point of segment AD and Segment EB. Segment AC and EC are congruent and

*asked on January 22, 2019* -
## English

When asked whether she had a criminal record, the job applicant felt she had to lie. A. expurgate

*asked on January 17, 2019* -
## English

Marco is overwhelmed by the rude customers, but he never loses his A. aplomb

*asked on January 17, 2019* -
## English

Book: Nickel and Dimed Ehrenreich is somewhat surprised that low-wage workers in Minnesota aren’t treated better than low-wage workers in other states because A. Minnesota has a low unemployment rate B. it is a relatively liberal state and tries more

*asked on January 17, 2019* -
## English

Can you check this please Our job, it emerges from fragments throughout the day, is to keep ladies’ wear “shoppable.” Sure, we help customers (who are increasingly called “guests” here as well), if they want any help. At first I go around

*asked on January 17, 2019* -
## math

The total length of 4 blue banners and 5 yellow banners is 49 meters. The total length of 2 blue banners and 1 yellow banner is 17 meters. All banners of the same color have the same length. Find the length of each blue banner

*asked on October 31, 2018* -
## math

Mark, Brent, Logan, Steven, and Noah are on a school basketball team. All of the following statements are true There are 3 boys shorter than Mark. Logan is shorter than Mark. Noah is not the shortest boy. Logan is taller than Brent and Noah 5. The boys,

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

Two girls, Bella and Destiny, and two boys, Ryan and José, each have a different favourite colour: red, green, blue, and black. Use the following clues to determine each person’s favourite colour. • One person’s name and favourite colour start with

*asked on October 21, 2018* -
## Statistics

The prize for winning a contest can be chosen from category A or category B. Prizes from category A have a mean of $1000 and a standard deviation of $50. Prizes from category B have a mean of $1000 and a standard deviation of $300. Describe an advantage of

*asked on October 19, 2018* -
## math

U2 is an Irish band that has been popular for over three decades. The lengths of 80 of their songs were selected at random and are listed in the table below. Lengths of Randomly Selected U2 Songs. ? (seconds) 382 222 214 338 310 559 334 225 177 189 278 300

*asked on October 17, 2018* -
## math

Visitor Numbers Total visitors: 2004. 2005. 2006 3,135,727. 3,164,906. 3,281,435 Total visitor days: 2004. 2005. 2006 7,453,465. 7,518,997. 7,784,044 Total visitors have increased by 4.6% and total visitor days by 4.4% in this period. Group tour visitors

*asked on October 17, 2018* -
## language arts

2) Which sentence BEST explains how art and painting differ slightly in meaning? A) A work of art can be viewed from all angles; a painting can be viewed from only one angle. B) A work of art shows images that cannot occur in real life; a painting shows

*asked on October 16, 2018* -
## math

A farmer wishes to fence off a rectangular field that borders a straight river, as shown in the diagram provided. He does not need to fence the side bordering the river. The total length of the fencing is 60 ft long. a. Use your knowledge of quadratic

*asked on October 8, 2018* -
## Math Statistics

The following is taken from a State of the Park Report for Banff National Park. Visitors Numbers Total Visitors: 2004= 3,135,727. 2005=3,164,906. 2006=3,281,435 Total visitor days: 2004= 7,453,465. 2005= 7,518,997. 2006= 7,784,044 Total visitors have

*asked on September 23, 2018* -
## Math Statistacs

U2 is an Irish band that has been popular for over three decades. The lengths of 80 of their songs were selected at random and are listed in the table below. Lengths of Randomly Selected U2 Songs. ? (seconds) 382 222 214 338 310 559 334 225 177 189 278 300

*asked on September 19, 2018* -
## science

List your own example of turning an observation into a hypothesis. Be sure to list all five steps: observation, explanation, test (independent variable), prediction (dependent variable), and hypothesis. this is my example Observation The trash smells.

*asked on September 15, 2018* -
## Math

. Alex plays rugby and can burn approximately 650 calories in a 1.25-hour game. Danielle enjoys kickboxing and can burn approximately 420 calories in a 45-minute class. Who burns calories at a higher rate?

*asked on September 15, 2018* -
## Math proportional reasoning

Michael owns a butcher shop. Gary brings in a 718 lb steer to be butchered. Michael charges $2146 to butcher the animal for Gary. What is the cost per pound that Gary pays for the butchering of his steer?

*asked on September 15, 2018* -
## Math logic and reasoning

1. Tyson was working with square numbers. He noticed a pattern for squaring consecutive numbers that end in 5 note:top column has 5^2,15^2,25^2,35^2 note: Bottom column shows answers of top column so 5^2=25,15^2=225,25^2=625, 35^2=1225 A.) Identify a

*asked on September 12, 2018* -
## mathematics

how do I solve cosh((1+j)/2) to form of a+jb????

*asked on July 25, 2018* -
## math

how many students are in the sample 15 20 22 25

*asked on May 15, 2018* -
## math

Find the partial sum without using a graphing utility. 100 2n n = 1

*asked on May 10, 2018* -
## Math

what allowed for the expansion of the ranching industry a. laws created by the government prohibited cattle drivers from cutting barbed wire. b.American Indians and buffalo had been removed from the plain of North Texas*** c. railroads allowed for

*asked on March 5, 2018* -
## Math

on a map whose scale is 1:50000 a piece of land is represented by a rectangle measuring 3 cm by 2 cm. What is the actual size of this land in hectares?

*asked on January 20, 2018* -
## Physics

A ball of mass 8.0kg is suspended by two wires from a horizontal arm of 0.8m, which is attached to a vertical shaft. If wire 1 is 0.6m and wire 2 is 1.0m, what is the tension of wire 1 if the vertical shaft is in uniform rotation about its axis such that

*asked on November 7, 2017* -
## Physical Chemistry

Your hot tub has overheated to a very uncomfortable 48 degrees C. If your hot tub contains 402 L of hot water, what mass of ice at -5 degrees C would you need to add to your hot tub to bring the temperature down to a more comfortable 36 degrees C?

*asked on September 29, 2017* -
## Physical Chemistry

One potential problem with using molarity to express concentration is that molarity is temperature dependent. If you make a 1.000 M solution of aqueous HCl at 25 degrees celsius, what would the molarity of this solution become if the temperature of the

*asked on September 29, 2017* -
## Chemistry

1 mole of each of the following substances is dissolved in 1 L of water. Order them from most ions (1.) to least ions (4.) in solution. CH2CH2-OH ZnCl2 H2SO3 NaNO3

*asked on September 27, 2017* -
## math

Shonda buys an Amalgamated dining room furniture set for $10,000, makes a down payment of 20%, and finances the rest with 60-month store financing at an annual interest rate of 5.4% compounded monthly. What is the amount of her monthly loan payment to

*asked on July 29, 2017* -
## math

(x^2-x-20)/(x^2-25) My teacher said that the first step is to factor everything. I know that x^2-25 is factored as (x-5) (x+5), but still need help with factoring x^2-x-20.

*asked on July 29, 2017* -
## math

A pair of 6 sided fair dice are rolled. If one of the dice shows an odd number what is the probability of the sum of the dice being 7 ?

*asked on July 22, 2017* -
## chemistry

Which one of the two salts precipitated? AgNO3 + K2SO4 = Ag2SO4 + KNO3

*asked on July 19, 2017* -
## math

Consider a roll of two six sides dice. Let A be the event that the sum of the faces showing is 4. Let B be the event that one of the faces showing is 3. What is the union of A and B ? What is the intersection of A and B ?

*asked on July 6, 2017* -
## physics

Island A is 500km east and 320km south of Island B. Island C is 75km east and 1015km north of island A. find the components of the (delta)r vector value pointing from island B to island C

*asked on May 28, 2017* -
## Maths

show that the circles x^2 + y^2 - 10x - 8y + 18 = 0 and x^2 + y^2 - 8x - 4y + 14x = 0 do not intersect. Apologies on behalf of my friend

*asked on May 2, 2017* -
## Math (Probability)

Suppose that 4 cards are drawn from a well-shuffled deck of 52 cards. What is the probability that all 4 are hearts? There are 13 hearts of 52 cards. So, where do I go from here to solve the equation?

*asked on April 22, 2017* -
## physics

A block with a mass of 2.85 kg is hung by a vertical spring of stiffness 13.3 kg/s2. The damping force is given by -b(dx/dt)m where b = 364 g/s. The block is pulled down 12 cm and then released. (a) Calculate the time required for the amplitude of the

*asked on April 11, 2017* -
## maths probability plz help

The Probability that a USA-based business man goes to paris by car is 0.6 and by air is 0.4. If he goes by car, the probability that he will be early for his appointment is 0.3 while if he goes by air, the probability he'll be early is 0.65 (i) what is the

*asked on March 29, 2017* -
## physics

A playground merry-go-round of radius R = 1.1 m has a moment of inertia of I = 280 kg*m^2. and is rotating at a rate of ω = 9 rev/min around a frictionless vertical axis. Facing the axle, a 37 kg child hops onto the merry-go-round and manages to sit down

*asked on March 28, 2017* -
## physics

A 2.51 kg particle moves in the xy plane with a velocity of v = ( 4.98 , -3.58 ) m/s. Determine the angular momentum of the particle about the origin when its position vector is r = ( 1.73 , 1.15 ) m.

*asked on March 28, 2017* -
## Linear Algebra

Hi, I really need help with these True/False questions: (a) If three vectors in R^3 are orthonormal then they form a basis in R^3. (b) If Q is square orthogonal matrix such that Q^2018 = I then Q^2017 = Q^T. (c) If B is square orthogonal matrix then B^−1

*asked on March 26, 2017* -
## Math

an 8% solution, a 10% solution, and a 20% solution of sulfuric acid are to be mixed to get 100 milliliters of a 12% solution. How many milliliters of each must be mixed if the volume of the 20% solution must be 25 milliliters less than the volume of the

*asked on March 20, 2017* -
## Algebra

Multiply -4b by 1-b/b? I did -4b/1 × 1-b/ b But my answer isn't adding up?

*asked on March 15, 2017* -
## Math

In the figure to the right, ABCD is rectangle. Find the area of △ABC, if the area of △AOD is 10. It is a rectangle with a x in the middle.

*asked on March 5, 2017* -
## Math

In the figure to the right, ABCD is rectangle. Find the area of △ABC, if the area of △AOD is 10.

*asked on March 5, 2017* -
## Geometry

In the figure to the right, ABCD is rectangle. Find the area of △ABC, if the area of △AOD is 10.

*asked on March 5, 2017* -
## Analytical Chemistry

A solution is prepared by dissolving 0.2222 (¡¾0.0002) g of KIO3 in 50.00 (¡¾0.05) mL. (i) Calculate the molar mass of KIO3 with its associated uncertainty to the correct number of significant figures. (ii) Find the molarity and its uncertainty with an

*asked on February 27, 2017* -
## Math

In a book closet, mathematics books are kept in stacks of 4. If each student carries no more than one stack, what is the least number of students needed to carry books for a class of 23? Is the answer five or six students?

*asked on February 20, 2017* -
## Physics

What is the total amount of potential energy that can be stored in a 10,000 gallon water tower built with the water tank 61.50 m above ground level?

*asked on February 14, 2017* -
## Physics

A 250.0 kg motorcycle can roll 45.9 m up a long hill before coming to a stop if the motorcycle approaches the base of the hill 30.0 m/s.

*asked on February 14, 2017* -
## Physics

The drawing shows a collision between two pucks on an air-hockey table. Puck A has a mass of 1.5 kg and is moving along the x axis with a velocity of +5.5 m/s. It makes a collision with puck B, which has a mass of 3.2 kg and is initially at rest. The

*asked on December 8, 2016* -
## Calculus (vectors)

A plane must travel S15E at 720km/h. If the wind Is from S35W at 130km/h, what heading and airspeed should the pilot set to reach the destination. I got 648km/h E8.89S

*asked on December 8, 2016* -
## Science

Bb is an example of an organism's ______. "Bb" is from Punnett square

*asked on December 7, 2016* -
## Math

A rectangular Persian carpet has a perimeter of 216 inches. The length of the carpet is 30 inches more than the width. What is the dimension of the carpet

*asked on December 4, 2016* -
## Integral Calculus

We can use this power series to approximate the constant pi: arctan(x) = (summation from n = 1 to infinity) of ((-1)^n * x^(2n+1))/(2n+1) a) First evaluate arctan(1) without the given series. (I know this is pi/4) b) Use your answer from part (a) and the

*asked on December 1, 2016* -
## Calculus application of sin function

a horizontal position of the pendulum of a grandfather clock can be modelled by h(t)=Acos(2(pi)t/T), where A is amplitude of the pendulum in meters, t is time in seconds, and T is the period of the pendulum, in seconds. If the pendulum has a velocity of

*asked on November 25, 2016* -
## Calculus

Find the local maximum and minimum values of the following curve within the given domain. y=SECx-TANx 0 ≤ x ≤ 2π

*asked on November 24, 2016* -
## Calculus

determine all asymtote(s) of f(x)= 1/(x(x-1)^2) using limits

*asked on November 23, 2016* -
## Calculus

find the point(s) of inflection on the function f(x)= 10x + 10/x

*asked on November 23, 2016* -
## Math, Surds

The area of a square vegetable guarden is 60m^2. a) What is the exact length of each side of the garden? b) If a fence of a chicken wire is to be constructed around the vegetable garden, what length (to the nearest meter) of chicken wire is needed. It

*asked on November 21, 2016* -
## Calc

Find the value(s) of c guaranteed by the Mean Value Theorem for Integrals for the function over the given interval. f(x) = 4√x [4, 9]

*asked on November 18, 2016* -
## Math

Use the limit process to find the area of the region between the graph of the function and the x-axis over the given y-interval. g(y) = 4y2 − y3, 1 ≤ y ≤ 3

*asked on November 18, 2016* -
## Math

On a trip of d miles to another city, a truck driver's average speed was x miles per hour. On the return trip the average speed was y miles per hour. The average speed for the round trip was 50 miles per hour. Show that y=25x/(x-25) Find the limit of y as

*asked on November 18, 2016* -
## Math

The measurement of the radius of a circle is 16 inches, with a possible error of .25 inches. Use differentials to approximate the possible propagate error in computing the area of the circle.

*asked on November 18, 2016* -
## Integral Calculus

I am unable to find the formula for this given sequence: {2, -6/4, 24/16, -120/64, 720/256,...} So far, I know it's at least this: a(sub(n)) = ((-1)^(n+1))/(4^(n-1)) Basically, all I'm having trouble with is finding the pattern between the numerators. If

*asked on November 17, 2016* -
## Algebra

Solve. x^2-xy+3y^2=15, x-y=2 Thank you

*asked on November 15, 2016* -
## Algebra

Find an equation of a hyperbola with vertices (0,3) and (−4,3) and e=3/2. Thank you

*asked on November 15, 2016* -
## Algebra

which equation represents the relationship shown in the table below? x | 0 | 1 | 2 | 3 | __________________ y | -3 | -1 | 1 | 3 | a.) y = -x - 3 b.) y = x - 3 c.) y = 2x - 3 d.) y = -2x + 3

*asked on November 15, 2016* -
## Physics

A 125-g arrow is shot vertically upward with an initial speed of 28 m/s. Assuming 30% loss in total mechanical energy while ascending, what maximum height above the position from which it was shot does the arrow reach?

*asked on November 12, 2016* -
## Physics

Suppose that instead of our sun, our star were a giant star such as Betelgeuse. The mass of Betelgeuse is estimated to be about 20 times that of our sun. With earth in the same orbit? With its same mass, how long would our year be in earth days if we

*asked on November 7, 2016* -
## Physics

A) the earth year is 365.25 days long. How long would our year be if earth followed the same orbit, but was only the mass of Mars? Answer this in earth days. B) How long would our year be if earth were the same mass, but had the orbital distance of mercury

*asked on November 7, 2016* -
## Physics

At a height of 500km above earth, a satellite will orbit the earth once every 95 minutes. Find the mass of the earth based on this idea. B) How far above earth's surface would a satellite need to orbit so that it revolves at exactly the same rate as the

*asked on November 7, 2016* -
## Physics - Circular motion

A domesticated pig places a 100g rubber puck on a turntable. The turntable is set at a rate of 78rpm,and the pig knows the coefficient of static friction is 0.37 between the puck and turntable surface. A) How far out from the center of the turntable can

*asked on October 31, 2016* -
## Physics - circular motion

You approach a slight bump in the road on the highway in a car. The bump carries you into a circular (convex) vertical arc of radius 39m. A) choosing two different cars ( it is for you to choose 2 particular models, providing the mass of each), at what

*asked on October 31, 2016* -
## physics

quarterback throws a pass to a receiver, who catches it at the same height as the pass us thrown, The initial velocity of the ball is 15.0 m/s, at an angle of 25.0 degrees above the horizontal. How long is the ball in the air?

*asked on October 30, 2016* -
## Calculus

Use the limit process to find the area of the region between the graph of the function and the y-axis over the given y-interval. f(y) = 7y, 0 ≤ y ≤ 2

*asked on October 29, 2016* -
## Biomechanics

An athlete jumps straight upwards at 2.5 m/s, find: 1. a) total flight time 2. b) maximum jump height

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

differentiate the given function, simplify your answer by leaving no negative or rational exponents. final answer should be in factored form where possible. y=(x^2 +2x)^3(x+2)

*asked on October 20, 2016* -
## Calculus

A nut store sells 200 bags of almonds per month at a price of $5 per bag. For every $0.20 decrease in the price, the store sells five more bags per month. Determine the marginal revenue when 120 bags are sold.

*asked on October 20, 2016* -
## Calculus

A nut store sells 200 bags of almonds per month at a price of $5 per bag. For every $0.20 decrease in the price, the store sells five more bags per month. Determine the marginal revenue when 120 bags are sold.

*asked on October 19, 2016* -
## Calculus

The demand function for a bottle of hand lotion is p(x)=0.78+0.0003x, where x is the number of bottles sold and p is the price, in dollars. The cost function is c(x)=480-0.32x+0.0005x^2. Find the marginal profit when 700 bottles of hand lotion are sold.

*asked on October 19, 2016* -
## Calculus

Determine the coordinates of the point on the graph of f(x)=3x^2-7x+4 where the tangent line is parallel to the line 5x+y=3

*asked on October 19, 2016* -
## Calculus

find the point, (c,f(c)), on f(x)=x^2 in the interval 0≤X≤4, such that f'(c) equals the average rate of change over that interval.

*asked on October 19, 2016* -
## Calculus

Determine the equation of the tangent to f(x)= (1/x)+x at the point (1,2)

*asked on October 19, 2016* -
## Organic Chemistry

Butanamide (Amide) vs Aminobutane (Amine) Which compound do you think has the higher melting point? Explain your reasoning.

*asked on October 17, 2016* -
## Science

Show how vertical multiplication can be used to do a charge balance if Zn2+ combines with Cl-

*asked on October 15, 2016* -
## Calculus

Lim (√(3-x) - √(3+x)) /x x->0

*asked on October 15, 2016* -
## Calculus

Lim √(3-x) - √(3+x) x->0 x

*asked on October 15, 2016* -
## calculus

(Compute all instantaneous rate of change using the limit of the difference quotient) 2) A football's path is represented by the function h(t)=-4.9t^2 +10t+2, where h is its height, in meters, after t seconds. Find the rate of change of the football's

*asked on October 15, 2016* -
## Calculus

Determine the average rate of change of f(x)=1/(x^2 -x) over the interval 2 is less then or equal to x and 3 is greater or equal to x.

*asked on October 15, 2016* -
## Physics

An antique cabinet is in the cab of a pickup truck traveling 20.1 m/s and has a coefficient of static friction of 0.250 between the antique and the cab. In the event of a sudden stop, what is the shortest distance the pickup truck can stop without having

*asked on October 13, 2016* -
## physics

a child saw a skunk in a hole of a tree, standing 2.5m away. the child attempted to throw a pebble into the hole but missed with a speed of 11m/s. Angle of elevation is 75 degree, what was the Vfy of the pebble.

*asked on October 10, 2016* -
## daymon

a child saw a skunk in a hole of a tree, standing 2.5m away. the child attempted to throw a pebble into the hole but missed with a speed of 11m/s. Angle of elevation is 75 degree, what was the Vfy of the pebble.

*asked on October 10, 2016*