Thursday
December 8, 2016

Posts by Matt

Total # Posts: 2,359

Math
Is 21/2 a fraction or division?
December 7, 2016

Science
Bb is an example of an organism's ______. "Bb" is from Punnett square
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
December 4, 2016

Integral Calculus
Thanks, Steve. Now I got parts b and c down. How would I go about doing parts d and e?
December 1, 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 power series to find a...
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 v(t)=sin Pi(t) find: A...
November 25, 2016

Calculus
Find the local maximum and minimum values of the following curve within the given domain. y=SECx-TANx 0 ? x ? 2?
November 24, 2016

Calculus
determine all asymtote(s) of f(x)= 1/(x(x-1)^2) using limits
November 23, 2016

Calculus
find the point(s) of inflection on the function f(x)= 10x + 10/x
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 needs to be answered in ...
November 21, 2016

Calculus
the question asked for 144 not 114, if you plug in 144 you will get x=4
November 19, 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]
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
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 x approaches 25 ...
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.
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 anybody can ...
November 17, 2016

Algebra
Solve. x^2-xy+3y^2=15, x-y=2 Thank you
November 15, 2016

Algebra
Find an equation of a hyperbola with vertices (0?,3) and ?(?4?,3) and e=3/2. Thank you
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
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?
November 12, 2016

Maths
During a run of bad luck a player lost 25% of her points each half hour. She started with 256 points. How much would she have left after 2 hours
November 9, 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 orbited Betelgeuse?
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 Answer this in earth...
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 earth's rotation?
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 the puck be places ...
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 maximum speed can you ...
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?
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
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
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)
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.
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.
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.
October 19, 2016

Calculus
is that 1/9 or 1/3
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
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.
October 19, 2016

Calculus
Determine the equation of the tangent to f(x)= (1/x)+x at the point (1,2)
October 19, 2016

Organic Chemistry
Butanamide (Amide) vs Aminobutane (Amine) Which compound do you think has the higher melting point? Explain your reasoning.
October 17, 2016

Science
Show how vertical multiplication can be used to do a charge balance if Zn2+ combines with Cl-
October 15, 2016

Calculus
Lim (√(3-x) - √(3+x)) /x x->0
October 15, 2016

Calculus
Lim √(3-x) - √(3+x) x->0 x
October 15, 2016

calculus
ok got it thanks
October 15, 2016

calculus
thats 0.2m/s right?
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 height at 1s.
October 15, 2016

Calculus
thanks that's a better way to write it
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.
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 the cabinet move ...
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.
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.
October 10, 2016

Science
Thank you Ms. Sue
October 10, 2016

Science
Where can I look and/or what website can I look at for the different components of the scientific method process? Please help
October 10, 2016

PHYSICS
a 75kg parent and a 22kg child meet at the center of an ice rink. they place their hands together and push hard enough to slide apart. a. is the force experienced by the child more than, less than, or the same force experienced by the parent? I said they experience the same ...
October 10, 2016

Physics
A spring with a spring constant of 22.0 N/cm has a block attached to one end and the other end is fixed. How much work does the spring do on the block if the spring is stretched from relaxed length by 6.8 mm as the block is moved? How much additional work is done by the spring...
October 9, 2016

Science
D=M/V
October 9, 2016

Math
What prime number am I? I have 3 prime factors Each prime factor is a different number I am a multiple of 10 I am less than 50
October 5, 2016

Math
Yes I know the total is 7 because 3 plus 4=7 but they are only asking the multiple choice answers
October 4, 2016

Math
So then would the answer be C?
October 4, 2016

Math
Pardon me. I believe I got the wrong answer I believe the answer would be C because they say in the word problem the ratio of blue paint to yellow paint. Can you please check my answer.
October 4, 2016

Math
To make green paint, Jeff's art teacher instructed him to mix blue and yellow paint. To make the desired shade of green, the ratio of blue paint to yellow paint is 3:4. What the does the ratio 3:4 mean? a. 4 parts yellow for every 3 parts blue b. 4 parts blue for every 3 ...
October 4, 2016

Math
So basically I would have to find out what the common facto of 36 and 24 first and then what would I do next?
October 4, 2016

Math
Robin and Emily are selling boxes of candy bars. Robin sells 36 boxes of candy and Emily sells 24 boxes of candy. Which expression, using the form a(b+c), represents the amount they sold altogether? a. 2(12+24) b. 4(9+6) c. 24(6 + 36) d. 12 (3+2) Can you explain to me if I add...
October 4, 2016

Math
Ty Ms. Sue
October 4, 2016

Math
I think I just solved it. I just watched a video on how to do division equations so it would be using inverse multiplication. x/42=21 x/42x42=21x42 x times 1=882 x=882 To check 882/42=21 21/21=1 Do I have the proper understanding of this somewhat. Let me ask you one thing ...
October 4, 2016

Math
Ms. Jones wrote the equation below on the board. x divided by 42=21 If the equation Ms. Jones wrote is true which of the following equations must be true? Answers: a. x=21 divided by 42 b. x=21 x 42 c. x=42 divided by 21 d. x=21 plus 42 I am not sure where to begin on this at ...
October 4, 2016

Math
Robin and Emily are selling boxes of candy bars. Robin sells 36 boxes of candy and Emily sells 24 boxes of candy. Which expression, using the form a(b+c), represents the amount they sold together a. 2(12+24) b. 4(9+6) c. 24 (6 + 36) d. 12 (3 + 2) My answer is B 9+6=15x4=60 60 ...
October 4, 2016

Math
Thank you checking on this.
October 4, 2016

Math
If it costs $75 to buy 3 video games, how much money will Jordan need if he wants to buy 12 video games? $75.00/3 video games=$25.00 for 1 video game $25.00 x 12 video games=$300.00 for 12 video games Can you please double check my answer to see if I got it correct. Thank you
October 4, 2016

Math
Mrs. Hanson's class of 22 students shares 132 colored pencils Which statement is true? a. For each student there are 7 colored pencils. b. For each student there are 6 colored pencils c. For every 7 students, there is 1 colored pencils d. For every 6 students, there is 1 ...
October 4, 2016

Math
Shelby drove to her aunt's house, which is 360 miles away. If it took her 5 hours and she drove at a constant rate, what was Shelby's average speed? My answer which I figured out in two different ways: 360 miles/5 hours=72 mph 360 miles/5 hours=x/1 hour=72 mph Can you ...
October 4, 2016

Math
I think I understand now. I would do 3.5 gal x 16 cups/1 gallon=56.0 cups I could also add 16 cups + 16 cups+16 cups=48 cups+8 cups (8 would be half of 16)=56.0 cups Thank you Ms. Sue for your help.
October 3, 2016

Math
Rita needs to measure out 3.5 gallons of vinegar for a science experiment However, her only measuring tool is a measuring cup that holds 1 cup. How many cups of vinegar does she need? I am confused on this can you please help me?
October 3, 2016

chem
Calculate the number of grams of Fe formed when 0.350 kg of Fe2O3 reacts. m = g
September 28, 2016

Math
Thank you Ms. Sue or checking on this.
September 28, 2016

Math
Molly has 15 marbles in a jar. What is the ratio of black to white marbles? There are 8 black marbles and 7 white marbles. A. 7:8 B. 7:15 C. 8:7 D. 8:15 My answer would be C Can you please double check my answer and tell me if I am right or wrong.
September 28, 2016

Math
So then the answer would be D
September 28, 2016

Math
Which table correctly fills in the ratio table below? Boys 3 6 ___ 21 Girls 2 4 6 ____ A. Boys 3 6 9 21 Girls 2 4 6 20 B. Boys 3 6 9 21 Girls 2 4 6 8 C. Boys 3 6 13 21 Girls 2 4 6 8 D. Boys 3 6 9 21 Girls 2 4 6 14 I believe the answer is B Could you please tell me if I am ...
September 28, 2016

Math
Jason watched a caterpillar move 10 feet in 2 minutes. Jason says the caterpillars unit rate is 0.2 feet per minute. Is Jason correct? Explain. I believe that Jason is correct because: If you have 2 minutes/10 feet=x/1 10/10=1 2/10=0.2 If you have 10 feet/2 minutes 2/2=1 10/2=...
September 28, 2016

Math
Marta, Loribeth, and Ira all have bicycles. The table shows the number of miles of each rider's last bike ride, as well as the time it took to complete the ride. Marta: Distance of Last Ride (in miles) 8 Time Spent on Last Bike Ride (in minutes) 80 Loribeth: Distance of ...
September 27, 2016

Math
Kim was walking down a rocky path. For 4 minutes, the elevation dropped steadily. Altogether it dropped 8 feet. What was the change in elevation per minute for the 4 minute?
September 26, 2016

Algebra
A number n is less than 6 units from 0. write inequality and solve it.
September 22, 2016

PHYSICS
does an object speed up or slow down when: 1. its velocity is positive (right) and its acceleration is positive (right)? I said it speeds up 2. its velocity is positive (right) and its acceleration is negative (left)? I said it slows down 3. its velocity is negative (left) and...
September 22, 2016

MATHEMATICS
if 1g of a drug whose half-life is 9 hours is administered intravenously, how much of the drug is left after 3 hours? after 5 hours? after 10 hours?
September 21, 2016

MATH
a drug has a half life of 5 hours. write the exponential function that gives the concentration of the drug over time assuming an initial concentration of 2 mg/ml
September 21, 2016

PHYSICS
looking over the edge of a cliff, you become curious as to how high up you are. you take a rock and drop it over the edge and count. The rock strikes the ground in between 3 and 4 of your count. so let's estimate that it took 3.5s for it to hit the ground. using the bottom...
September 21, 2016

physics
A car is driving in the negative X direction at a steady speed of 15 m/s. if it starts at a position of 30m: What is its displacement in the first second? My answer was 15m and used Xf-Xo (final-initial) to find the displacement What is his displacement in the first two ...
September 21, 2016

Math please help
How would in know what to mutiply by for the second table?
September 19, 2016

Math please help
How did you find out to multiply the numbers by 3?
September 19, 2016

Math please help
Celeste is making fruit baskets for her service club to take to a local hospital. The directions say to fill the boxes using 5 apples for every 6 oranges. Celeste is filling her baskets with 2 apples for every 3 oranges. Complete the tables to find equivalent fractions Apples ...
September 19, 2016

physics
In Mud buggy driving, people attempt to drive an off-road vehicle over a deep mud puddle. If the buggy stops before the end , it sinks into the mud and needs to be pulled out with a tow truck. A racer is driving his mud buggy in a straight line. when he hits the edge of the ...
September 18, 2016

physics
In Mud buggy driving, people attempt to drive an off-road vehicle over a deep mud puddle. If the buggy stops before the end , it sinks into the mud and needs to be pulled out with a tow truck. A racer is driving his mud buggy in a straight line. when he hits the edge of the ...
September 18, 2016

Math
Mrs. Jacobson wants to order toy instruments to give as prizes to her music students. The table shows the prices for various order sizes. Whistles 25 items=$21.25 50 items=$36.00 80 items=$60.00 Kazoos 25 items=$10.0 50 items=$18.50 80 items=$27.20 a. What is the difference ...
September 15, 2016

Math
Tomas makes balloon structures at a circus. In 180 minutes, he uses 252 balloons to make 36 identical balloon structures. a. How many minutes does it take to make one balloon sculpture? How many balloons are used in 1 sculpture. b. What is Tomas's unit rate for balloons ...
September 15, 2016

Math
I think my final answer would be A
September 14, 2016

Math
Parkview Middle School has 3 boys to every 4 girls. Cypress Elementary School has 3 boys to every 7 total students. Both schools have 567 students. Which of the following statements is true. a. Parkview has more boys than Cypress. b. Cypress and Parkview have the same amount ...
September 14, 2016

Math
Thank you so much. You are so smart and I appreciate your patience with me.
September 14, 2016

Math
I tried the problem in different ways and I also got 1/8 so now I know that I was on the right track a little bit. So then the answer would be: The ratio of zebras to total animals is 1 zebra to every 8 animals-Would this be a correct interpretation?
September 14, 2016

Math
Can you explain this to me a little bit as to why you are saying 1/8?
September 14, 2016

Math
The local zoo has 3 lions, 4 elephants, 2 giraffes, 5 monkeys, and 2 zebras. What is the ratio of zebras to total animals? My Answer: I already know this 3x:4x:2x:5x:2x=16x So 16 total animals 16x=2 x=8 So then the ratio of zebras to the total number of animals is 8 Can you ...
September 14, 2016

Math
So that is how I would interpret this then. This is my first year learning about ratios and it is kind of confusing. Thank you for your help
September 14, 2016

Math
To make green paint,Jeff's art teacher instructed him to mix blue and yellow paint. To make the desired shade of green, the ratio of blue paint to yellow paint is 3:4. What does this ratio mean? My Answer: It means comparing part to part (comparing how much blue paint ...
September 14, 2016

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