Questions Asked on
January 18, 2018

Algebra
Find the constants a and b so that all the four lines whose equation are given by pass through the same point. x + y = 1 x + 3y =11 ax + by =4 2a x by =2
asked by Taylor 
Science
Yes I know this might be easy for some of you, but I have this problem on my homework and I'm confused. Why is water wet?
asked by Ella 
Physics
A projectile is shot horizontally at 34.5m/s from the edge of a 55.0metre building . Determine the height of the projectile from the ground after 2.0seconds .
asked by sarah 
Physics
A projectile is shot horizontally at 34.5m/s from the edge of a 55.0metre building a) Determine the height of the projectile from the ground after 2.0 seconds. b) Calculate the velocity of the projectile when the projectile reaches the ground.
asked by Ara 
mathes
a farmer wants to make a rectangular pasture with 80000 squre meters. if the pasture lies along a river and he feneces the remaning three sides,what dimension shoud he use to minimize the amount fence needed
asked by getachew 
Physics
A ball of mass 1.20kg falls vertically and hits a horizontal floor at 2.50m/s . The ball then rebounds upward at 10.00m/s . If the ball is in contact with the floor for 0.02 seconds, compute the average force exerted on the floor.
asked by Sarah 
Accounting
Can equipment, wages payable, and accumulated depreciation be used to prepare adjusting entries?
asked by Anonymous 
Physics
A bullet is fired horizontally and penetrates into a block of wood. The block and bullet then move together after impact. Explain the total linear momentum and total kinetic energy of the system before and after the collision
asked by Sarah 
math  probability
a) What is the probability of obtaining 2 Heads when a coin is tossed twice? b) What is the probability of obtaining 1 Head when a coin is tossed twice? Keep in mind, the coins are not tossed simultaneously.
asked by anonymous 
Science
A ball is dropped from height of 8m above the ground. After striking the ground the ball rebound instantaneously with the same speed it struck the ground. The instant at which ball strike ground, another ball is drop from the same height. Find the height
asked by Chaitanya 
Science
A volleyball is served at the speed of 8.0 m/s at an angle 35° above the horizontal. What is the speed of the ball when received by the opponent at the same height
asked by Kate 
Science
__ degrees east or __ degrees west are coordinates for what?
asked by Jameson 
Maths
Mr lee is 56 years old. His nephew, sam, is 4 years old. In how maby yearsâ€™ time will mr lee be 5 times as old as his nephew
asked by Dani 
Physics
vector A is 5.5cm and points 60°above the positive xaxis. Vector B is 6.5cm and points along thr negative xaxis. Calculate the magnitude and direction of the resultant of these two vectors.
asked by Sarah 
Math
The side of a square flower bed is 1.5 m long.It is Enlarged by digging around 25 cm wife strip all around outside it . Find the area of the Enlarged flower bed and also the increase in area of the flower bed.
asked by Rajan 
Physics
Diffraction grating A has 16 000 lines/cm, and diffraction grating B has 12 000 lines/cm. Light of the same wavelength is sent through both gratings to a screen located a distance L from the gratings. The spacing of the maxima for grating A is 3.46 cm.
asked by Anonymous 
Physics
A ball is thrown horizontally at 18m/s from the roof of a building lands 28metre from the base of the building. Calculate the height of the building.
asked by Sarah 
Physics
A hair was used to form one end of an air wedge with two glass plates. The glass plates were in contact at the other end. When light of wavelength (4.6x10^7m) was reflected from the air wedge, the 320th dark fringe coincided with the position of the hair.
asked by Anonymous 
Physics
The wave crests generated in a ripple tank are 15mm apart and the frequency of the vibrator is 20Hz. If the frequency of the vibrator is trebled what is the spacing between the crest
asked by Boka 
Physics
A snooker ball with a mass of 0.3kg moving at 2.5m/s collides with another ball of 0.2kg mass and moving in the same direction with a speed of 1.20m/s . Assuming the collision is elastic, calculate the speed and direction of each ball after collision.
asked by Sarah 
Physics
Two vectors have a magnitude of 2.5km and 6.5km . Predict the maximum and minimum magnitude of their resultant vector
asked by Sarah 
Math
So I have a problem that is (5.1 x 10^3) x (3.2 x 10^3) can someone explain how the answer would be 1.632 x 10^7?
asked by Hello 
Calc 3
Two ropes are attached to the bumper of a car. Rope A is pulled with a force of 60 pounds at an angle of 30° to the horizontal ground, and rope B is pulled with a force of 80 pounds at an angle of 15° to the horizontal ground. The same effect can be
asked by Mitchel 
Calc 3
Suppose you leave home and hike 10 miles due north, then 8 miles in the direction 40° east of north, and then 6 miles due east. (a) How far are you from home? (b) What direction should you hike in order to return home?
asked by Mitchel 
Math
The fastest insect in the world is the dragonfly with an average cruising speed of 4.5 metres per second. Write an equation with two variables describing the relationship between the time taken and the distance travelled. If a dragonfly flies for 3 hours
asked by !? 
Science
What are the internal structures of a frog's stomach called?
asked by Ava 
algebra 1
1. Which of the following is equivalent to x^5y^2/xy^2 when x not= 0 and y not= 0? a. x^6y^5 b. x^5y c. x^4y d. x^4
asked by alexis 
Math (money)
I spent 35 euros and had 3/8 of my money left. How much money had I at first
asked by mary louise sherlock 
Language Arts 6th grade
Which of the following events from the story has the greatest impact of the plot in the first section of the novel? A. Timothy rescues Stew Cat from the wreckage of SS Hato. B. Philip receives a blow to the head as he attempts to abandon the SS Hato. C.
asked by William Tran from Connexus 
Social Studies
What are the consequences of the U.S. war on drugs on Mexico? A)Mexican drug cartels no longer risk sending illegal drugs into the U.S.(My Answer) B) The poverty rate in Mexico has decreased significantly. C)Illegal drug use in the U.S. has been
asked by Jasmine 
Educational Technology
1. Why is it important to have good study skills? (A)You will sleep better (B)You will learn more efficiently (C)You will have less free time (D)You will impress your parents 2. Why is it important to know how much time you spend on tasks? (A)so you
asked by Rose 
Physics
For an electric dipole, the electric field lines . . . A) Either start on the negative charge and go off infinitely or arrive from infinity and terminate on the positive charge. B) Either start on the positive charge and go off infinitely or arrive from
asked by Anon 
Physics
The electric field strength at a particular distance from an electric charge is 2.0 N/C. What is the electric field strength if you are 2 times closer to the same charge?
asked by Anon 
Physics
Which of the following is true about electric field lines? A) They point tangentially around a circle centered on a charge. B) They point away from positive charges and towards negative charges. C) They point away from negative charges and towards positive
asked by Anon 
Sociology
1.) Distinguish between material and nonmaterial culture. What aspect of a whole culture do you think is the most lasting. Explain your answer. 2.) Sometimes subcultures develop countercultural ideas. How important do you believe values and norms are in
asked by / 
Chemistry
In an experiment,excess 0.50moldm HCL was added to 10grams of granulated zinc in a beaker. How would the reaction rate be affected if the experiment was repeated using 8.0grams of granulated zinc
asked by Oluchi 
Language Arts
''You know my whole life changed after I fell in love. It was like the sun started shining on me for the first time, and for the first time in my life I began to smile.'' What does this mean?
asked by Anonymous 
calc 3
Find the exact length of the curve. x = 1 + 9^t2, y = 7 + 6^t3, 0 ≤ t ≤ 2
asked by Tayb 
Math (money)
I spent 35 euros and had 3/8 of my money left. How much money had I at first.
asked by Anonymous 
math
I need some help with this.. The swim team is selling key chains as a fundraiser. If its goal is to raise at least $180, how many key chains must it sell at $1.50 each to meet that goal? Write and solve an inequality.
asked by Ty 
Algebra
At the local ballpark, the team charges 4$ for each ticket and expects to make 1200$ in concessions. The team must pay its players 2100$ And pay all other workers 1900$. Each fan gets a free bat that costs the team 3$ per bat. How many tickets must be sold
asked by Mckayla 
Math
Use inverse operations to solve each equation. Explain each step and identify the property used to reach step. 19 = h/3  8
asked by Darkdream 
Physics
A man holds a child on his shoulder while watching a football match.how much work is done if the game lasts for 2hours
asked by David 
Geometry
I need help on lesson 1 unit 1 pairs of angles plzzzz help!!!!
asked by Chelsey 
Language Arts Help me!!
The "trouble with television" Robert Mac Neil voices a strong opinion about television in a paragraph explain his opinion. then tell whether you agree or disagree with him. Support your view with at least two pieces of evidence from Mac Neil's essay or
asked by Marie 
Math
Solve the equation. Explain each step and identify the property usedbto reach each step. 0.6x + 0.8 = 1.4
asked by Darkdream 
math
A museum professional has been working extended hours to remove dirt and grease that a vandal left on a painting. This professional is most likely an? There's actually 10 question so if someone could answer them.
asked by please help connexus 
Science
thermal energy is cause by the motion of ?
asked by KAITLYN 
Math
Miguel’s math book weighs more than 3.45 kilograms.Which could be the weight of his math book in kilograms?
asked by INeedHelpWithHomeWoek 
Chemistry
Calculate the number of molecules in a deep breath of air whose volume is 2.25L at body temperature, 37 Celsius, and a pressure of 735 torr. Answer is 5.15 x 10^22 molecules. Help me!
asked by Fred 
Chemistry
The adult blue whale has a lung capacity of 5.0 x 10^3L. Calculate the mass of air (assume an average molar mass of 28.98g/mol) contained in an adult blue whales lungs at 0.0 Celsius and 1.00atm, assuming the air behaves ideally. I have the answer but
asked by Kayla 
math
what total amount is greater: $3.00 tripling each week for 4 weeks or $4.00, quadrupling each week for 3 weeks
asked by Anonymous 
Honors English 10A
Can you please help me with these questions? After reading "The Olympic Swimmer," the reader can conclude that the speaker is most likely _____________. A. a competitive swimmer B. a participant in the Olympics C. a coach at the swim meet D. a dedicated
asked by Help Me Please! 
Chemistry
A scuba diver’s tank contains 0.29 kg of O2 compressed into a volume of 2.3L. A)calculate the gas pressure inside the tank at 9 Celsius. B) what volume would this oxygen occupy at 26 Celsius and 0.95atm? Answer is a)91atm B) 2.3 x 10^2 L Trying to find
asked by Lala 
Physics
Calculate the velocity of a 6kg riffle that shoots a 0.025kg bullet at a speed of 615m/s.
asked by Sarah 
Math
Rudy has a collection of 24 toy cars. She gives 3/4 of her collection to Ethan. How many toy cars does Ethan get?
asked by Yoalis 
math
2g – 1 = 3g + 6 how do i do this equation?
asked by jake 
Physics
Steve can paddle his canoe at 10 km/h in still water. If he paddles directly against a river’s current that is moving at 3 km/h, what is Sam’s velocity relative to the shoreline?
asked by Anonymous 
Physics
Can acceleration of object have a negative quantity ?
asked by Sarah 
Science
Does anyone know if there is a toxin in cigarette smoke or from hazardous waste that causes flulike symptoms, shortness of breath, or swollen nose? Thanks.
asked by Anonymous 
Math plz help fast
The figure shows the shadows created by the sun when Cindy stands near the flagpole. Cindy on the left, she’s ACTUALLY 5 ft and her SHADOW is 4 ft. The flagpole is on the right, we don’t know what the ACTUAL height is but the SHADOW is 10 ft. What is
asked by Harley 
Social Studies 6
The word "mechanization" is essential to understanding the history of agriculture. Which sentence from the article BEST helps to explain what "mechanization" means?' 1. "The first successful engine powered by gasoline was developed." 2."Mechanization on
asked by Anonymous 
Honors English 10A
Can you please help me with a few more Ms. Sue? Read lines 59 from "The Olympic Swimmer." Swimmers swivel, splash, and kick Back and forth in a clear, blue pool; Like fish at play in Neptune's sea. Swimming relaxed, and calm, and free. These stars, like
asked by Help Me Please! 
Chemistry
How do I find the answer to this?? Cu metal displaces Ag+(aq) from an aqueous solution. Which of the following is correct? Ag is easier to oxidize than Cu Ag is a better reducing agent than Cu Cu2+ is a better oxidizing agent than Ag+ Ag+ is easier to
asked by Clueless 
Trigonometry
Given that cot x = 5/ sqrt 11 find csc x A  5/6 B  6/5 C  sqrt11/ 6 D  6/ sqrt11
asked by Anonymous 
Math
Write "3 times the sum of x and 5 is 90" as an equation. You don't have to solve. Thank you in advance!
asked by Jeffery 
trigonometry
what is the length of the line segment whose endpoints are (2,3) and (6, 7)
asked by cdb1 
Science
How has the number of species becoming extinct changed in the last few centuries?
asked by Masuma 
statistics
If the critical values of a hypothesis test are +2.58 and 2.58, what would be the critical regions?
asked by sharon 
Earth Science
What instrument records earthquake waves? A.) seismogram B.) seismograph* C.) Ritcher scale D.) barometer
asked by Dylan 
Geometry
Is the equation correct? A circle has a diameter of 12 with a center translated 18 units left and 7 units down from the origin. 1. Write an equation for the circle. (x + 18) ^2 + (y + 7)^2
asked by Anonymous 
Algebra
After 6 years, an account that earns 4% simple interest has earned $480 in interest. How much was the initial deposit?
asked by Janna 
science
What are the most important events in the history of animal life that occurred at the beginning and at the end of the paleozoic
asked by Anna 
ELA
I began a written correspondence with my grandmother when I was a young child. We did not live within visiting distance, and writing was a way for us to “visit” each week. Sunday was the day she would rest from her labors on the farm. Taking her dime
asked by Help i need somebody not just anybody 
chemistry
Which situation will violate the octet rule? a. 3 bonds to boron b. 3 bonds to and a lone pair on oxygen c. 5 bonds to carbon d. 3 bonds to carbon
asked by Anonymous 
analogy
what is the analogy flower:rose::tree? begining with the letters scr,spr,str,thr
asked by isabel 
Geography
What is the capital of the largest (in land area ) island nation of Africa? Madagascar capital Antananarivo? Which continent has more nations, Europe or South America? Europe?
asked by Nicole 
Math
Simplify the expression: x^−11⋅x^5⋅(x/y)^4
asked by Bri 
Algebra 1
Is the following statement always, never, or sometimes true? A number raised to a negative exponent is negative. always never** sometimes
asked by Anonymous 
algebra
move from P1 = 20, Q1 = 14 to P2 = 22 and Q2 = 8, is this a change in demand or a change in quantity demanded also this one: P1 = 22 and Q1 = 13 to P2 = 26 and Q2 = 11
asked by Anonymous 
Physics
Light photons with energy 7.3 eV strike a metal surface and eject electrons with energy 2.7 eV. What is the Work Function of the metal?
asked by Anonymous 
accounting
The ABC Company has a policy to capitalize an asset with a threshold of $5,000 per item or a project/program. The ABC Company has an ongoing rolling replacement project/program to replace 20% of all computers annually. In addition, the ABC Company uses
asked by kim 
Chemistry
What is [Al(H2 O)5(OH)2+] in a 0.15M solution of Al(NO3)3 that contains enough of the strong acid HNO3 to bring [H3O+] to 0.10 M?
asked by Grant 
Math
On graph paper, use a table to make a complete graph of y = x2 − 2x − 8. Homework Help ✎ Write the coordinates of the yintercept. What is the connection between the y‑intercept and the equation y = x2 − 2x − 8? Write the coordinates of the
asked by Jane 
Math
A rectangular closet has a perimeter of 10 feet. If the width of the closet is 3 feet. What is the length of the closet
asked by Jaliyah 
math
write 78 minutes to 2 hours as a ratio reduced in lowest terms
asked by taylor 
Pre calc
Perform the indicated operation and simplify the result . Cot x(tan x sec x) Please help , I am struggling a lot !! Thank you!!!
asked by Jacob 
science
What could be some effects of population growth, natural disasters, disease, and advanced technology systems on resource availability?
asked by Karen smith 
algebra
If m
asked by kasey 
individuals and societies
How is Russia preserving its Eastern Culture while adapting to Western Influences? I need to write an essay and need three answers for three paragraphs to this question.
asked by Aiden 
Chemistry  Molecular Formula
A carbohydrate contains 39.56% C, 7.75% H, and 52.70% O by mass. A solution of 11.3 g of this carbohydrate in 375 g of ethanol has a boiling point of 78.49 deg C. The boiling point of ethanol is 78.29 deg C, and Kb for ethanol is 1.23 deg C*kg/mol. What is
asked by Jamie 
science
Which simple machine operated on the same principle as the movements of the arm at the elbow
asked by cresceen 
science
A what will the vibration of air mileules produce
asked by cresceen 
Physics
the mass of an airplane is 1.81x10^5 kg. if the gravitational potential energy is 3.78 x 10^7 J, how high did it fly?
asked by Xio 
Honors English 10A
Last 2 Questions! The primary means of character development in "The Last Judgement" is ______________. A. allusion B. imagery C. metaphor D. dialogue In "The Rhinoceros," the transformation of the inhabitants is an allegory for ________________________.
asked by Help Me Please! 
Pre calc
Evaluate using the Pythagorean indentities Find sinθ and cosθ if tanθ =1/6 and sinθ >0 Help please ! Thank you !
asked by Bob 
math
Explain why sqrt(a+b) does not equal sqrt a + sqrt b, for a>0 and b>0?
asked by emily 
physic
During a visit to New York City, Lil decides to estimate the height of the Empire State Building (see figure below). She measures the angle θ of elevation of the spire atop the building as 17°. After walking x = 9.28 ✕ 102 ft closer to the iconic
asked by joy 
physics
Two military jets are engaged in a dogfight. The US plane is traveling at a velocity of 22 m/s east while the Russian plane is traveling at a velocity of 19.5 m/s west. When the US pilot reports spotting the Russian plane, how fast will it say the Russian
asked by Anonymous