Sunday
May 1, 2016

# Posts by MARCO

Total # Posts: 238

Math
Rachel gave 1/4 of a pie to each of 5 friends how many pies did she give to her friends in all
December 17, 2015

Chemistry
Imagine that you have a stock solution with a concentration of 4.6 M glucose (C1). You want to use the stock solution to prepare a diluted solution of 0.22M glucose (C2). You need a total volume of 10mL of 0.22M glucose (V2). What volume of water you need to use for making 0....
September 20, 2015

Biology
Imagine that you have a stock solution with a concentration of 4.6 M glucose (C1). You want to use the stock solution to prepare a diluted solution of 0.22M glucose (C2). You need a total volume of 10mL of 0.22M glucose (V2). What volume of water you need to use for making 0....
September 20, 2015

Grammar
Yes please, I've been struggling with these due to having a developmental disability so any help would be greatly appreciated.
September 10, 2015

Grammar
Can someone correct my answers, please? I really need help! (Underlined words have parenthesis over them, and anything with asterisks by them means that's what I believe the answers are.) 6. Choose the function of the underlined word in the sentence. Call (me) before ...
September 10, 2015

Algebra
Your math test scores are 68 78 90 and 91 what is the lowest score you can iron on the next test and still achieve an average of at least 85
September 8, 2015

Statistics
March 1, 2015

Social Studies help
I don't know if this helps but the answer is C. The book she wants you to read is "Johnny Tremain"
December 17, 2014

Math
The function rule n=0.69p relates the population "p" and the number of "n" these people who used the internet. The number of people who used the internet was 202 million. What was the population? I am so confused, please help me with atleast the first step...
November 19, 2014

Math
Pat and Kelly went hiking in the mountains. They started at 9,100 ft. They climbed 1,200 ft the first day, descended 900 ft the second day, and climbed 1,000 ft the third day. On the fourth day they descended 800 ft. What was the average altitude at which they hiked?
October 3, 2014

math
Use a graph of f or some other method to determine what, if any, value to assign to f(a) to make f continuous at x = a. HINT [See Example 2.] (If there is no such value, enter NONE.) f(x) = x2 − 18x + 81 x − 9 ; a = 9
August 18, 2014

???
These were kind of confusing.. Steve / Damon, help, again, please?
March 26, 2014

Ms. Sue pleeease help
2.) Line FG contains points F(3,7) and G (-4, -5). Line HI contains points H(-1, 0) and I (4, 6). Lines FG and HI are A. Parallel B. Perpendicular C. Neither 3.) The equation of line GH is y=4x-3. Write an equation of a line perpendicular to line GH in slope-intercept form ...
March 26, 2014

Line AB contains points A (-8, -4) and B (1, -5). The slope of line AB is A. -7 B. -1/7 C. 1/7 D. 7
March 26, 2014

math algebra
Find the equation in slope-intercept form of the line having m = -2 and b = 4.
February 10, 2014

math
Find an equation in standard form of the line passing through the points (8, -5) and (-6, 2).
February 10, 2014

Physics
d = Vo*t + 0.5a*t^2 = 6 m. 0 + 0.5a*4^2 = 6 8a = 6 a = 0.75 m/s^2. Fnet=m*a Fnet=25*0.75=18.75 N Fnet=Fap-Ff Fap=Fnet+Ff Fap=18.75+3.8=22.55 N W=Fap*d W=22.55*6=135.3 J
January 1, 2014

science
A nonnative species of animal is introduced into a healthy ecosystem. In its new environment, this species has no predators, although it preys on several native animals in the ecosystem. Make a prediction about the biodiversity and health of this ecosystem in the future? A....
December 14, 2013

science
A biologist studying a desert ecosystem observes that the population of a lizard species increases following a particularly hot, dry period that causes a snake population to decline. What could the biologist hypothesize about the roles of these two species? A.The lizard preys ...
December 14, 2013

science
Okay its A? Thank you!
December 9, 2013

science
Thank you that helps a lot! If you can tell me which one it is that would be great!
December 9, 2013

science
I am thinking it is ether A or B. Am I correct?
December 9, 2013

science
which of the following would help decrease the human ecological footprint? A.using bottled water instead of tap water B.using public transportation instead of riding in a car C.buying books instead of borrowing from the library D.using hot water instead of cold water to wash ...
December 9, 2013

physics
A car traveling at 3.2 m/s accelerates at the rate of +0.68 m/s2 for an interval of 8.0 s. Find vf.
September 28, 2013

Calculus
You are creating a rectangular garden and want to surround it with brick edging. You also are going to divide it into two halves with the edging so that your vegetables and herbs are on one side and flowers are on the other. You only have 120 ft worth of brick edging and want ...
September 11, 2013

math
longest multipcation combination for 120 180 and 210
September 4, 2013

English
Thanks. Better? The 1967 film, Guess Who’s Coming To Dinner shows that racial prejudices are very much alive and represent a microcosm of society’s attitude towards interracial relations.
August 6, 2013

English
Is this a good thesis about the film guess who is coming to dinner? The 1967 film, Guess Who’s Coming To Dinner at initial viewing shows that racial relations have come a long way, however, close scrutiny of the film reveals that racial prejudices are very much alive and ...
August 6, 2013

Science --
If you mixed 25.00g of salt in 100.00mL of water and it all dissolved, what would the concentration be in g/mL?
April 8, 2013

Math
Solve 3cosx+1=2secx
April 5, 2013

History
I have a social studies report that I am working on with other classmates and we are studying about life for teens in the 1920's. and how the use of alcohol was used by teeens. i I have to find a type of journal they may written or how this had affected family life when ...
March 14, 2013

History
Hi can you help me find a website for teens in the 1920's and a journal on it.
March 14, 2013

Math
3x^2(2x-2) I don't know the answer can you help me?
February 26, 2013

Science
If you mixed 25.00g of salt in 100.00mL of water and it all dissolved, what would the concentration be in g/mL?
February 26, 2013

Math
Find product and write answer in scientific notation (3 x 10^6). * (2 * 10^12) I got .6 x 10 ^19 Is this right?
February 26, 2013

Math help
Can you help me with this
February 26, 2013

Math
Find the product write answer in scientific notation (3 x 10^6) * (2 x 10^12) I got. .6 x 10^ 9
February 26, 2013

Math 10
A water sprinkler sprays in a circular a distance of 10 ft. What is the circumference of the spray? I got 31.4 ft. Is that right??
February 19, 2013

Math 9
2 planes leave the airport at the same time. Minutes later plane A is 70 miles due north of the airport. Plane B is 168 miles due East of the airport. How far apart are the 2 airplanes. ? I think 98 miles apart. Is that right?
February 19, 2013

Math 5
A rectangular yard is twice as long as wide the perimeter is 120ft. What are the yards dimensions? W : L : I got. W : 10. And ll: 50 Is that right ?
February 19, 2013

Math 4
Karen is buying wallpaper border for her bedroom Which is 12ft by 13ft. If the border is sold in rolls of 5yards each how many rolls will she need to purchase? 156ft. Divide by 3 is total 52 yrds. So divide by 5 yd 10 for 50 yard.karen would need at 11 rolls is that right?
February 19, 2013

Math 8
A rectangular field is to be fenced completely. The width is 28yd. And the total area is is 1960ydsquared. What is the length of the field ? I got: 70 yd Is that right?
February 19, 2013

Math quest3
The formula for the surface area of a sphere is 4(3.14)r^2. What is the surface area of a ball with a diameter of 6 inches round? Round to nearest inch. I got. 113.04 Rounded is 113 inch
February 19, 2013

Math quest 2
If a triangular sail has a vertical height of 83 ft. And horizontal length of 40 ft, what is the area of the sail? I got area : 3,320ft squared
February 19, 2013

Math word problem
A fire and rescue squads places a 15 ft ladder against a burning building. If he ladder is 9ft from the building how far up will the ladder reach? I got 17.5 ft Is that right?
February 19, 2013

math
During the dinner rush, a certain restaurant cooks about 25 pounds of spaghetti per hour. How many grams of spaghetti do they cook per second?
January 14, 2013

Math - Discounts
A tv is advertised as 20% discount. If the original price is 450.00 what is the new price? Help please
January 9, 2013

Math
A 20 meter ladder is leaning against a house.The bottom of the ladder is 15 meters away from the house. How far, to the nearest tenth, is the top of ladder from the ground? Do I multiply 20,x 15? I don't know how to do the problem
December 17, 2012

Math
A 20 meter ladder is leaning against a house.The bottom of the ladder is 15 meters away from the house. How far, to the nearest tenth, is the top of ladder from the ground? Do I multiply 20,x 15? I don't know how to do the problem
December 17, 2012

Math word problem
Ryan collected 43 candy bars on Halloween he gave 15 of them to his father andhe gave his mother ten less candy bars than he gave his father. Then Ryan ate 4 of the candy bars . Hwo many Andy bars does he have left ? I got 19
November 4, 2012

physics
A pelican flying along a horizontal path drops a fish from a height of 4.7 m. The fish travels 7.7 m horizontally before it hits the water below. What was the pelican’s initial speed? The acceleration of gravity is 9.81 m/s2 . Answer in units of m/s
November 2, 2012

physics
A pelican flying along a horizontal path drops a fish from a height of 4.7 m. The fish travels 7.7 m horizontally before it hits the water below. What was the pelican’s initial speed? The acceleration of gravity is 9.81 m/s2 . Answer in units of m/s
November 2, 2012

Word problem math
Word problem. You cut a 2 m long board into 2 pieces . One piece is 10 cm shorter than the other. How long are each boards.? I got. 1 pc at 80!cm. the other 1pc at 100 cm Is this right ?
October 14, 2012

Algebra inequality
I have to choose a variable and write inequality For less than or equal to I'm using these keys <| Cuz I don't Jon how to show when I type 1. A van can hold a maximum of 8 passengers I wrote V <| 8 V is less than or equal to 8 2. To apply for a job you need to ...
October 14, 2012

algebra
X-5/3 =1 Or X - 5 = 1 ______ 3 I'm trying to type and tell you it's x-5 over 3 equals 1 I don't know how to do I think I have to do reverse operation which is multiply
October 14, 2012

algebra
Word problem. You cut a 2 m long board into 2 pieces . One piece is 10 cm shorter than the other. How long are each boards.? I got. 1 pc at 80!cm. the other 1pc at 100 cm Is this right ?
October 14, 2012

algebra
Ok. I get it know 3/1 *x-5/3. = 1*3 Leaves X-5 = 3 +5 = 3+5 X= 8 So next time I should do what I think which multiple. I just got thrown off cuz of x-5 Thank you
October 14, 2012

algebra
X-5/3 =1 Or X - 5 = 1 ______ 3 I'm trying to type and tell you it's x-5 over 3 equals 1 I don't know how to do I think I have to do reverse operation which is multiply
October 14, 2012

ALGebra
Thank you
October 14, 2012

ALGebra
Can you check 2x + 3 (x-2) -3 (x-6) I got 2x+3x-6 -3x+18 2x+3x-3x= 2x -6+18 =12 Final answer : 2x+ 12
October 14, 2012

Algebra. .
October 14, 2012

Algebra. .
Can you check 2/3 k = 60 I got:: 3 2 k = 60 * 3 = 90 ________________ 2 3 1 2 = 2 K = 90/2 K = 45
October 14, 2012

Algebra pls check
Sorry should be -2w + 60 = -6w -2w. = -2w 60/-4 = -4/-4w -15= w Is it right now ?
October 14, 2012

Algebra pls check
Is this right ? -2(w-30) =-6w -2w -60 = -6 w +2w =+2w -60 = -4w _____________ -4 = -4 15 = w
October 14, 2012

math repost
name two numbers with decimal hundredth that round to the same whole number but different tenths.
October 12, 2012

math 5
name two numbers with decimal hundredth that round to the same whole number but different tenths.
October 12, 2012

math
name two numbers with decimal hundredth that round to the same whole number but different tenths.
October 11, 2012

social studies
what happenswhen its time to launch the hot air balloon
October 1, 2012

Algebra can u help
Word problem. You buy 6 lb turkey 3 lb coleslaw 4 lb cheese 4 lb turkey 2 lb coleslaw 3 lb cheese. Define and use variables to represent total cost I got.; 6 t + 3t + 4c + 4t +2s + 3c * x Is this right ??
September 26, 2012

Algebra
I don't know how
September 26, 2012

Algebra
Can you check 2z - 3y -8z + y I got : 2z-8z-3y +y = -6z -4y =. -2y
September 26, 2012

Pls check math
3+2(4)-3+4(-3)= I got -4 3+4-2-5+3-6-8= I got I can't figure out I got -17 4-3(2+6) = I got. -20 10/5 + 8+(-3) /5 -4= I got -1
September 17, 2012

Math. Algebra
For. 1. I got. -4 For 2. I can't figure out For. 3. I got. -20 For 4. Igot -1
September 17, 2012

Math. Algebra
3+2(4)-3+4(-3)= I got 4 3+4-2-5+3-6-8= I got -17 4-3(2+6) = I got. -21 10/5 + 8+(-3) /5 -4= I got -1
September 17, 2012

Soc studies
What are the differences between the 1st and 2nd continental congress and their outcome?
September 11, 2012

Math
Can u o Pls help
September 11, 2012

Math
I need to identify property. For r (l) = r Would this be inverse property for multiplication?
September 11, 2012

math word problem
Can you pls help
September 10, 2012

math help can someone check
Can someone. Check
September 10, 2012

Declaration of indepen
In first to paragraphs of declaration. Where do governments get their powerf? I wrote they get their power from the consent of the governed people. Is this correct?
August 29, 2012

Declaration of independence
In first 2 paragraphs. Of declaration. Why are governments set up? Governments are set up to secure the rights of people. Is this correct
August 29, 2012

Social studies
Learning about the declaration of independence The. First two paragraphs. Question 1. What did the colonist feel was. Necessary? I wrote: the colonist felt they must breah their political ties with Britain
August 29, 2012

Soc studies declaration of independence
Why are governments set up? I wrote governments are set up to secure the rights of people. Is. This right answer
August 29, 2012

Soc studies declaration of independence
Can you help what rights cannot be denied? Would it be pursuit of life,libert, pursuit of happiness?
August 29, 2012

Algebra
2 * 7 - 10 / 9 - 4 = I got 7. Is that ok?
July 22, 2012

physics
What is the radius of a communications satellite’s orbital path that is in a uniform circular orbit around Earth and has a period of exactly 24.0 hours (86,400 seconds). (Measurement is from the center of Earth.) G = 6.67 × 10-11 N.m2/kg2 ME = 5.98 × 1024 kg 1...
May 30, 2012

Number sequence
Find the next 3 numbers of this sequence 243, 81, 27.
May 17, 2012

Math. Fractions
The distance Around the inside of mall. 12/16mi John Jo jogged around the nmall. 4 times. How far did he jog. Got. 3 miles Aaron walked the mall 3times. How far did he walk. I got. 2 1/4 miles Is this right
May 17, 2012

Math. Fractions
Emily exercised from 4:05pm tob4:32 pm For what part of an hour did Emily exercise ? Write the fraction in simplest form Would it be 27/60 = 9/20
May 17, 2012

Physics
a train is moving at 45km/h when a coupling breaks and the last car separates from the train. as soon as the car separates, the brakes are automatically applied, locking all wheels of the runaway car and causing a uniform decelaration of 5 m/s^2. determine the distance the car...
February 19, 2012

physics
Dolphins emit clicks of sound for communication and echolocation. A marine biologist is monitoring a dolphin swimming in seawater where the speed of sound is 1522 m/s. When the dolphin is swimming directly away at 7.9 m/s, the marine biologist measures the number of clicks ...
December 3, 2011

physics
A member of an aircraft maintenance crew wears protective earplugs that reduce the sound intensity by a factor of 355. When a jet aircraft is taking off, the sound intensity level experienced by the crew member is 72 dB. What sound intensity level would the crew member ...
December 3, 2011

physics
A wave traveling along the x axis is described mathematically by the equation y = 0.15 sin (7.5πt - 0.49πx), where y is the displacement (in meters), t is in seconds, and x is in meters. What is the speed of the wave?
December 3, 2011

physics
A spider hangs from a strand of silk whose radius is 4.40 10-6 m. The density of the silk is 1300 kg/m3. When the spider moves, waves travel along the strand of silk at a speed of 264 m/s. Determine the mass of the spider.
December 3, 2011

math
how do u find the expanded algorithm
November 14, 2011

physics
The drive propeller of a ship starts from rest and accelerates at 3.00 10-3 rad/s2 for 2.05 103 s. For the next 1.75 103 s the propeller rotates at a constant angular speed. Then it decelerates at 2.30 10-3 rad/s2 until it slows (without reversing direction) to an angular ...
November 10, 2011

physics
At the local swimming hole, a favorite trick is to run horizontally off a cliff that is 7.4 m above the water. One diver runs off the edge of the cliff, tucks into a "ball," and rotates on the way down with an average angular speed of 1.6 rev/s. Ignore air resistance...
November 10, 2011

physics
1. Determine the total force acting downwards. Calculate the force of gravity acting on the passenger and the elevator. F = m * a Ft + Fg = 330kg * 3m/s^2 Solve for Ft?
September 30, 2011

MATH
FIND the ESTIMATE: 1) A RARE TRUFFLE ONCE SOLD FO \$13.20 FOR A 0.44 OZ CAN. APPROXIMATELY HOW MUCH WOULD 1LB OF THIS TRUFFLE COST?
September 5, 2011

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