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Laura

Questions (719)

A 55kg arrow is fired vertically upward at a speed of 42m/s. It rises upwards, then drops and lands on the ground. If it lodges
1. 1 answer
2. 489 views
Sophie borrowed $2000 at a simple interest rate of 15% for 3 years to repay the loan and has $900 in interest. If Sophie's
1. 1 answer
2. 1,451 views
How many weeks will it take for 50 000 to earn 1500 in interest if the rate is 6% p.a.
1. 2 answers
2. 460 views
A block and tackle has a velocity of 6 and it is being used to raise a mass of 68 newtons through 3 meters. The efficiency is
1. 1 answer
2. 552 views
An investment is initially worth $11,100. Write a formula for the function V(t) representing the value of this investment aftert
1. 1 answer
2. 1,034 views
You add 3.5 L of an HCl solution of unknown concentration to 2.0 L of 0.5 M HCl and 4.5 L of water. The final concentration of
1. 1 answer
2. 568 views
From a height of 25 meters a ball is thrown vertically upwards at a velocity of 5 meters per second.a.What time in seconds will
1. 1 answer
2. 610 views
At what point of the curve y= x^4 is the normal line parallel to 2x + y = 3? Find the equation of the normal line.
1. 1 answer
2. 7,580 views
The Department of Foreign Languages of a liberal arts college conducted a survey of its recent graduates to determine the
1. 1 answer
2. 1,004 views
Evaluate the quantity.4 · P(4, 4) · C(9, 5)
1. 1 answer
2. 622 views
Find the point of intersection of the pair of straight lines.2x + 4y = 19 −3x + 3y = 3
1. 1 answer
2. 507 views
Find the point of intersection of the pair of straight lines.y = −5x − 4 −y = 6x + 3
1. 1 answer
2. 656 views
A table is supported against a wall forming an angle with the vertical. The coefficient of static friction between the table and
1. 0 answers
2. 525 views
Given the functions of f(x)=(x-3)/(x9), g(x)=9x+3, find (gof)(x).
1. 1 answer
2. 665 views
How do orbitals on individual atoms interact and change when covalent bonds form in molecules?
1. 0 answers
2. 403 views
logbase4(x+5)=3+logbase4(x-2)Tried so many times please help!
1. 1 answer
2. 342 views
You have 700 sq ft of plywood to make the stage floor. Use A^-1(x) to find the dimensions of both the runway and the main part
1. 3 answers
2. 617 views
You have 700 sq ft of plywood to make the stage floor. Use A^-1(x) to find the dimensions of both the runway and the main part
1. 2 answers
2. 644 views
your school is putting on a prom fashion show, and you are in charge of building a platform to serve as a stage. Main stage is a
1. 1 answer
2. 644 views
Christy drove at an average speed of 55 mi/h from her home in San Francisco to visit her sister in Tucson. She stayed in Tucson
1. 1 answer
2. 727 views
Commercial airplanes are sometimes towed out of the passenger loading area by a tractor. The 1800 kg tractor exerts a force of
1. 0 answers
2. 963 views
Let C=f(q)=450+0.2q give the cost in dollars to manufacture q kg of a chemical.a) Which of the following statement(s) correctly
1. 2 answers
2. 1,162 views
Five year old Andrew weighs 45 lbs and requires insulin. His doctor has prescribed 0.150 units of insulin/kg body weight/hr
1. 1 answer
2. 497 views
Rewrite the expression2logx−3log(x^2+1)+4log(x−1) as a single logarithm logA. Then the function
1. 0 answers
2. 533 views
Solve for x8⋅4^2x−4=53
1. 1 answer
2. 363 views
The cost (in dollars) of producing x air conditioners is C=g(x)=560+40x. Find a formula for the inverse function g−1(C).
1. 2 answers
2. 3,205 views
Why does a clear, saturated solution of PbI2 form a yellow precipitate when a small amount of KI is added to the solution?A. KI
1. 4 answers
2. 2,929 views
What happens to the following reaction at equilibrium if the pressure is decreased?2H2(g) + O2(g) 2H2O(g) A. The equilibrium
1. 2 answers
2. 2,882 views
pH indicators change color at their _____. The pH at which the color change happens for a particular indicator molecule depends
1. 4 answers
2. 2,222 views
Given the reaction:Cu2+(aq) + S2-(aq) CuS(s) What will happen (a) if CuSO4(aq) is added? And (b) if Na2SO4(aq) is added? A. (a)
1. 3 answers
2. 3,122 views
At a high temperature, the equilibrium constant for the decomposition of hydrogen iodide is 65.0. If the initial concentration
1. 1 answer
2. 1,386 views
The pH of your swimming pool is found to be 6.89. What is the concentration of H+ ions in the pool?A. 7.76 × 106 M B. 0.84 M C.
1. 3 answers
2. 1,678 views
Which of the following pairs would make a good buffer?A. H2C2O4 and HC2O4- B. HNO3 and NO3- C. NaOH and NaCl D. HCl and NaOH
1. 3 answers
2. 6,347 views
A solution has [OH-] = 3.5 × 10-6. Based on that, what must be true about this solution?A. It is an acidic solution. B. It is a
1. 1 answer
2. 590 views
When are more products of a reaction available initially than at equilibrium?A. K = 0 B. Q < K C. Q = K D. Q > K
1. 4 answers
2. 1,416 views
The subject,verb and object in " great people endure criticism without resentment"
1. 1 answer
2. 431 views
The vapor pressure of water (at 50.0 o C) is lowered by 17.0 torr when 36.1 g of an unknown non-electrolyte is added to 65.56 g
1. 0 answers
2. 527 views
What will be the result of a reaction if its enthalpy change is positive, its entropy change is negative and Gibbs free energy
1. 1 answer
2. 1,331 views
In the interval0 'less than or equal to' x 'less than or equal to' pi find the values that satisfy the equation cos 2x - sin x =
1. 3 answers
2. 569 views
Tony visits the local fair and sees one if therides, the ferris wheel. The ferris wheel has a diameter of 50 feet and is on a
1. 1 answer
2. 786 views
Let f(x)= 2x - 1, g(x)= 3x - 2. Find the domain of the function,(f + g)(x)
1. 3 answers
2. 4,463 views
Find the M is the midpoint of the line segment PQ, what is the coordinates of point Q?P (4, 5), M (-2, -3)
1. 1 answer
2. 741 views
A cube of side L is place in a uniform electric field E = 3200 N/C. What is the net flux through the cube. Assume the electric
1. 1 answer
2. 764 views
A coin is biased so that the probability of obtaining a head is 2/3. The coin is tossed four times. Find the probability of
1. 1 answer
2. 970 views
how does the author of selection 1 express his or her point of view differently than the author of selection two?author of
1. 8 answers
2. 2,013 views
294 round to ten
1. 1 answer
2. 341 views
A house has increased in value by 38%since it was purchased. If the current value is $483,000 , what was the value when it was
1. 3 answers
2. 3,162 views
An island is 3 mi from the nearest point on a straight shoreline; that point is 6 mi from a power station. A Utility
1. 1 answer
2. 1,653 views
If the width of rectangle ABCD is 8 cm and the length of diagonal line AC is 14, find the length of rectangle ABCD. A2 + b2 =
1. 1 answer
2. 652 views
Limone (MW 136g/mol) is a pleasant smelling liquid found in lemon and orange peels. The boiling point of limonene is 175 ˚C,
1. 0 answers
2. 770 views
find the heat flow through the sides of an 25cm tall by 10cm wide of ice water in 46s.The glass is 6.00mm thick; the temperature
1. 0 answers
2. 488 views
A piece of wire is 60 inches long. The wire needs too be bent into two peices. The prices are both bent in a square. If the
1. 1 answer
2. 577 views
Hello so I'm just wondering comparing the variable x and the number 9, do they have different degres? I know that x has a degree
1. 0 answers
2. 353 views
Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the 12.0-V batteries of a
1. 1 answer
2. 2,510 views
1. One of your friends tries to stop an argument between you and your sister. Your friend is practicingA. empathy B. hazing C.
1. 8 answers
2. 4,498 views
What is the formula to calculate the volume of a rectangular prism given the length, width, and height measurements?
1. 0 answers
2. 4,150 views
How do you Find the lateral area of a square pyramid. base:8Height:22. and side:8 Help pls
1. 1 answer
2. 1,023 views
A spring with a force constant of 1.0 N/cm is compressed to a displacement of 10.0 cm. When released, it's energy is used to
1. 0 answers
2. 379 views
A spring with a force constant of 1.0 N/cm is compressed to a displacement of 10.0 cm. When released, it's energy is used to
1. 0 answers
2. 515 views
when two parallel lines are cut by a transversal and one alternate interior angle is x squared and the other is 3x. How do u
1. 1 answer
2. 490 views
if two parallel lines are cut by a transversal and two interior angles are 3x and x sqaured. how do you solve for x?
1. 1 answer
2. 471 views
Two spheres are launched horizontally from a 1.1 m -high table. Sphere A is launched with an initial speed of 4.5 m/s . Sphere B
1. 1 answer
2. 758 views
There are 3 pink marbles, 2 yellow marbles, and 5 blue marbles in a bag. What is the probability of drawing 2 pink marbles?
1. 3 answers
2. 1,461 views
The expression 18h + 100p represents the amount(in dollars) that an insurance salesperson earns for working h hours and selling
1. 13 answers
2. 3,595 views
A position vector with magnitude 40 m points to the right and up. Its x-component is 32 m . What is the value of its
1. 2 answers
2. 2,632 views
Find the x- and y-components of the vector d⃗ = (6.0 km , 31 ∘ left of +y-axis).I worked it out and got 5.14, 3.09 and
1. 2 answers
2. 6,043 views
Was it easier for Paleo-Indians (hunter gatherers) in dry climate or cold climate?
1. 3 answers
2. 623 views
A car is traveling at a steady 90 km/h in a 50 km/h zone. A police motorcycle takes off at the instant the car passes it,
1. 2 answers
2. 10,679 views
In college softball, the distance from the pitcher's mound to the batter is 43 feet.If the ball leaves the bat at 105 mph, how
1. 1 answer
2. 703 views
Two lines intersect so that angle 1 and angle 3 are vertical angles, angle 2 and angle 4 are vertical angles, and angle 1 and
1. 3 answers
2. 2,508 views
line BD bisects angle ABC. Find angle ABD, angle CBD, and angle ABC if angle ABD equals 3x+6 and angle DBC equals 7x-18please
1. 2 answers
2. 7,781 views
I have to write a summary response essay to "How to Tame a Wild Tongue" by Gloria Anzaldua. However I do not know how to
1. 2 answers
2. 859 views
At a constant velocity, a 5kg bag of cement is pulled straight up a 7m wall. How much work is done by the puller? (Gravitational
1. 5 answers
2. 2,221 views
A pet store is building new cages for their birds. They have8 cockatiels, 32 parakeets, and 28 finches. How many cages will they
1. 1 answer
2. 437 views
A pet store is building new cages for their birds. They have8 cockatiels, 32 parakeets, and 28 finches. How many cages will they
1. 0 answers
2. 472 views
Gina is tying up a stack of newspapers with string. She wants the string to wrap around twice, once lengthwise and once
1. 1 answer
2. 547 views
Lavonne’s mother has brown eyes, and her father has blue eyes. Lavonne has brown eyes, and her husband has blue eyes. She
1. 1 answer
2. 625 views
Tobias is helping his uncle paint the side of a barn. Each can of paint covers 80 square feet. If the side of the barn is 10
1. 3 answers
2. 451 views
Larry and Willa are each reading the same book.Larry has read 2/3 of the book.Willa read 4/6 of the book,so she read more.Is
1. 2 answers
2. 602 views
what's the lewis dot diagram for methanol?
1. 1 answer
2. 574 views
In the winter of 1976, when I was only four years old, my family moved into a modest home in a growing Greenville neighborhood.
1. 2 answers
2. 1,333 views
A pendulum swinging through a central angle of Ts completes an arc of length 6.4 cm. What is the length of the pendulum?
1. 1 answer
2. 614 views
I have ti figure out the correlation coefficient of a statistical factor o 4 personin a dextrity and anxiety test.1 1 10, 2 1 8,
1. 0 answers
2. 509 views
Find the equation of a line that passes through the points (1/3, 2/5) and (–4/5, 1/2). Please put your final answer in
1. 1 answer
2. 568 views
For the dissociation of acetic acid, CH3COOH CH3COO- + H+, the free energy change, ΔG° = 27.26 kJ/mol. What is the free energy
1. 1 answer
2. 781 views
14.6 mL of hydrochloric acid is completely neutralized by 25.0 mL of 1.40 M sodium hydroxide, what was the hydrochloric acid
1. 1 answer
2. 588 views
Acetylene gas, C2H2, reacts with oxygen according to the following equation. If 46.0 g of acetylene reacts with 100.0 g of
1. 2 answers
2. 1,156 views
The mass/volume percent of a sodium sulfate and water solution is 12.0% m/v. If the density of the solution 1.22 g/mL, what is
1. 1 answer
2. 454 views
A spoon of sterling silver is 92.5% silver by mass and the rest is made of other metals, usually copper. If the spoon contains
1. 1 answer
2. 1,009 views
If NaCl has a solubility of 36.0 g in 100 g of H2O at 20 °C, how many moles of water are needed to prepare a saturated solution
1. 1 answer
2. 3,884 views
After adding a hot piece of titanium to a cup containing 300.0 mL of 30.0 °C water, the final temperature of the solution is
1. 1 answer
2. 645 views
I am having problems determiming how to draw out an entity relation diagram. Can you help?
1. 1 answer
2. 410 views
Write the structural formula of a compound with an unbranched chain of five carbon atoms that is an alkenoic acid.
1. 0 answers
2. 751 views
Of the infinitely many lines that are tangent to the curvey = −7 sin x and pass through the origin, there is one that has the
1. 1 answer
2. 3,809 views
So in school, I am doing a " planet paper roll comparison " So the scale of the diameter of one planet is 0.943cm or something..
1. 0 answers
2. 393 views
How was the camera developed ? ( Who made it )
1. 1 answer
2. 385 views
Originally the camera was made to capture a moment in time quickly and exactly. Paintings often reflected the opinion of the
1. 5 answers
2. 464 views
Can someone give me a brief explanation to why Cameras were developed ?Please make it short and simple.
1. 3 answers
2. 612 views
is it reasonable to expect that these models will change again in time? Explain.Like the bohr diagram and etc;
1. 3 answers
2. 2,793 views
In what ways is Bohr's model of the atom similar to and different from Thomson's model?I still need someone to help me.. I don't
1. 1 answer
2. 1,378 views

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