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Alexandra

Questions (100)

How were the Greeks able to defeat the Persians?
1. 1 answer
2. 293 views
negative point one times two thirds
1. 1 answer
2. 312 views
How do you find the limiting reactant in a single replacement reaction?
1. 1 answer
2. 363 views
In 8 years, Kim will be n years old. Write and simplify an expression to represent Sarah's age ten years from now.In 8 years,
1. 0 answers
2. 263 views
The perimeter of the triangle is 25 meters. The first side is 7 meters longer than the third side. The second side is 4 times
1. 3 answers
2. 512 views
Find the midpoint of the line segment with end coordinates of: (−3,−1) and (−4,2)Give coordinates as decimals where
1. 8 answers
2. 2,639 views
Which section of the country will be affected by the embargo of 1807?
1. 1 answer
2. 407 views
what is your favorite instrument?
1. 0 answers
2. 87 views
1.Carbon-14 is a radioactive isotope. What is an isotope?What is the approximate half-life of carbon-14?
1. 3 answers
2. 533 views
Consider the quotient,f(x)/x-h What is the remainder of this quotient? My answer- f(x-h)
1. 1 answer
2. 729 views
A couple wants to lend money using the house value as a cover. The lender will lend them 70% of the value of the house. The
1. 0 answers
2. 617 views
If the hypotenuse of a triangle is 15 yds, and one leg is 12 yds, what is the length of the other leg?Also how do you find the
1. 1 answer
2. 571 views
Why was it smart for European colonial powers to wield power in their newly-acquired colonies through indirect rule? Can you
1. 1 answer
2. 529 views
Initially a 1 L vessel contains 10 moles of NO2 and 6 moles of O2. At equilibrium, the vessel contains 8.8 moles of NO2.
1. 3 answers
2. 611 views
A ramp has been rise of 1.5 m for every 12 m of run. What is the slope of the ramp?
1. 1 answer
2. 815 views
Write the formula of the corresponding acid that contains this anion.Express your answer as a chemical formula. The arsenite ion
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2. 1,067 views
What is 3/5 of 25?
1. 1 answer
2. 412 views
List sources of internal pressure and external pressure
1. 1 answer
2. 589 views
What is the probability of winning the jackpot if you play the Florida lotto?What is the probability of winning that jackpot if
1. 1 answer
2. 584 views
Calculate the momentum of a bullet moving with a velocity of 1000m/s ,if it has a mass of 0.01kg
1. 1 answer
2. 498 views
We did a titration lab, and one of the post-lab questions says: "the manufacturer of the vinegar used in this experiment claims
1. 1 answer
2. 1,481 views
in this experiment, 3 sets of plants were grown. one set had no light, one set had some light, one set had full sun. each set
1. 0 answers
2. 576 views
Find all real numbers x satisfying the equation:2^x + 3^x - 4^x + 6^x - 9^x = 1. Please help me. I really don't know what to do.
1. 3 answers
2. 918 views
If a saturated solution of Potassium Chlorate at 80 degrees celsius cools to room temperature (25 degrees celsius), how many
1. 1 answer
2. 769 views
I've tried so hard on this and I'm completely hopeless, can somebody help me out? Please it would mean a lot. Task 1 find the
1. 1 answer
2. 774 views
I need help because I don't understand how to solve this equation.37. x/a - 1 = y/b for x So... does it mean solve for x? 39. V
1. 3 answers
2. 683 views
A circular pond of radius 12 m has a layer of ice 0.25 m thick. On a spring day, the temperature of the water below the ice is
1. 0 answers
2. 519 views
A circular pond of radius 12 m has a layer of ice 0.25 m thick. On a spring day, the temperature of the water below the ice is
1. 0 answers
2. 612 views
A large pot is placed on a stove and 1.2 kg of water at 14°C is added to the pot. The temperature of the water is raised evenly
1. 1 answer
2. 881 views
On Earth a fit astronaut without a space suit and life support pack can leap straight up and leave the ground with an initial
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2. 920 views
(c) On Earth a fit astronaut without a space suit and life support pack can leap straight up and leave the ground with an
1. 0 answers
2. 928 views
A juggler throws a ball with an initial horizontal velocity of +1.1 m/s and an initial vertical velocity of +5.7 m/s. What is
1. 1 answer
2. 994 views
Your projectile launching system is partially jammed. It can only launch objects with an initial vertical velocity of 42.0 m/s,
1. 1 answer
2. 1,093 views
A cannon is fired horizontally from atop a 40.0 m tower. The cannonball travels 180 m horizontally before it strikes the ground.
1. 1 answer
2. 2,103 views
Two girls decide to jump off a diving board. Katherine steps off the diving board. Anna runs straight off the diving board so
1. 1 answer
2. 816 views
A juggler throws a ball with an initial horizontal velocity of +1.1 m/s and an initial vertical velocity of +5.7 m/s. What is
1. 2 answers
2. 640 views
In a fetal pig, what are the 4 lobes of the brain and their functions?
1. 1 answer
2. 1,392 views
"Toy Car A" is propelled by elastic force. The other forces acting on the car are gravity (pulling the car down) and friction
1. 0 answers
2. 677 views
"Toy Car A" is propelled by elastic force. The other forces acting on the car are gravity (pulling the car down) and friction
1. 0 answers
2. 688 views
24. What happens when a solution of nitric acid (HNO3) is added to a solution of potassium hydroxide (KOH)? What are the
1. 2 answers
2. 695 views
C(s) + H2O(g) + Heat <--> CO(g) + H2(g)17. How would you adjust the temperature to increase the amount of product? 18. Does the
1. 1 answer
2. 3,503 views
Which of the following is a single replacement?a. KOH + HCl --> KCl + H2O b. 2Na + 2H2O --> H2 + 2NaOH c. 2C2H6 + 7O2 --> 4CO2 +
1. 2 answers
2. 2,548 views
A vending machine had to be programmed to accept any combination of nickels, dimes, and quarters that totals 40 cents. How many
1. 1 answer
2. 1,142 views
write the correct net ionic equation and identify spectator ions when CoSO4 and BaCL2 mix
1. 1 answer
2. 3,402 views
how many mL of .135M Sr(OH)2 are needed to neutralize 35ml of .157M HCLI know the answer came out to 20.4 ml My only question is
1. 1 answer
2. 450 views
The reaction: 2C2H2+5O2->5O2->4CO2+2H2O is performed by mixing 175 grams of C2H2 and 175 grams of O2 to produce 127 grams of CO2
1. 1 answer
2. 2,920 views
A bottle of 12.0 M hydrochloric acid has only 35.7 mL left init. What will the HCl concentration be if the solution is diluted
1. 1 answer
2. 4,212 views
How do you parse these words?1. Rendition 2. Ambiguous 3. Deleterious 4. Euphemism 5. Alacrity 6. Respite 7. Polemical 8.
1. 3 answers
2. 428 views
How did Renaissance thinkers think the individual was defined? Explain how this idea can be compared with the value of an
1. 3 answers
2. 811 views
The manager of a shopping mall was asked to rope off a rectangular section of the parking lot for an automobile show. The area
1. 3 answers
2. 1,145 views
The Environmental Protection Agency set a standard of 50 parts per billion of lead in drinking water. A new standard was set
1. 1 answer
2. 439 views
Evaluate each of the following. Show all your calculations.a) f'(��3)� if f(x) �� = x^4�� − 3x� b) f' ��(−2)� if ��f(x)
1. 1 answer
2. 498 views
Evaluate each of the following. Show all your calculations.a) f'(��3)� if f(x) �� = x^4�� − 3x� b) f' ��(−2)� if ��f(x)
1. 1 answer
2. 555 views
Determine the velocity and acceleration as functions of time, t, for s(t) = 45t − 5t^2�, wheres(t) represents the distance as
1. 0 answers
2. 482 views
The forward motion of a space shuttle, t seconds after touchdown, is described bys(t)� = 189t − t^3 , where " is measured in
1. 0 answers
2. 1,198 views
Determine the maximum and minimum of each function on the given interval.a) �� = 2x^3� − 9x^2�� ,−2 ≤ x� ≤ 4 b) �� =
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2. 386 views
State the absolute maximum value and the absolute minimum value of each function, if thefunction is defined on the interval
1. 0 answers
2. 462 views
Assume you can heat water with perfect insulation (all the heat from combustion of ethanol is transferred to water). What is the
1. 1 answer
2. 1,485 views
. A certain researcher thinks that the proportion of women who say that female bosses are harshly critical is greater than the
1. 0 answers
2. 403 views
If the puck strikes the goalie's pads and stops in a distance of 4.14 cm, what average force is exerted on the pads? Answer in
1. 1 answer
2. 2,286 views
A 20-N horizontal force pushes an object along a rough floor so that the object moves with a constant velocity of 7.0 m/s. How
1. 1 answer
2. 1,967 views
A 16.0-N weight slides down a rough inclined plane that makes an angle of 28.0° with the horizontal. The weight, which started
1. 1 answer
2. 830 views
An object of mass 5 kg is dropped from a certain height. Just before it strikes the ground it has a kinetic energy of 1250 J.
1. 2 answers
2. 736 views
You are planning to use a ceramic tile design in your new bathroom. The tiles are blue-and-white equilateral triangles. You
1. 4 answers
2. 10,195 views
how can you find out how many slices your class needs if each pizza has 8 slices and ther are 28 kids?
1. 1 answer
2. 413 views
If the concentration of a reactant is decreased, will the speed of the reaction increase or decrease? Explain.I understand that
1. 4 answers
2. 610 views
Xe(g) + F2(g) ----uv light---> Xe F2(s)XeF2(g) + 2F2(g) ---catalyst---> XeF6(s) XeF6(s) + H2O(l) ------> Xe O3(s) + 6HF(g)
1. 1 answer
2. 1,394 views
So I do know how to work out letter a) but I'm still very confused with parts b and c. Appreciate the help!2FeN(s) + 3H2(g) -->
1. 1 answer
2. 521 views
How are deflation hollows made? Could you also give me some more pictures of hoodoos (the landforms)?
1. 0 answers
2. 442 views
A green purse costs $11, which is 11 times as much as a red tie costs.How much does the red tie cost?
1. 2 answers
2. 376 views
To solve for the following proportion, you could use equivalent ratios, divide out the known ratio, or use cross products.
1. 1 answer
2. 652 views
A plane flying with a constant speed of 14 km/min passes over a ground radar station at an altitude of 7 km and climbs at an
1. 0 answers
2. 741 views
The base of a solid is bounded by y=2sqrtx, y=2 and x=4. Find the volume of solid if cross sections perpendicular to y=2 are
1. 0 answers
2. 571 views
I don't understand how to answer this problem:The base of a solid is bounded by y=x+1 and y= x^2-1. Find the volume of the solid
1. 0 answers
2. 1,129 views
How many moles of acetic acid are there in 25 mL container?
1. 1 answer
2. 1,185 views
If 10.0 grams of sodium bicarbonate reacts with 50.0mL of 2M acetic acid, what is the limiting reactant? what reactant is in
1. 1 answer
2. 1,435 views
A candy cane 30 cm high has a circumference of 3 cm. The red “ribbon” makes exactly 4 complete turns round the candy cane
1. 1 answer
2. 691 views
If you forget the product of 9 and 9, what can you do to figure it out?
1. 3 answers
2. 576 views
A 10.2 kg weather rocket generates a thrust of 200N. The rocket, pointing upward, is clamped to the top of a vertical spring.
1. 1 answer
2. 3,266 views
In the study of biochemical processes, a common buffering agent is the weak base trishydroxymethylaminomethane, often
1. 3 answers
2. 849 views
Can you simplify 9 over 16?
1. 3 answers
2. 222 views
A gas storage tank has a volume of 3.5*10^5 m^3 when the temperature is 27 degrees celcius and the pressure is 101 kPa. What is
1. 2 answers
2. 2,126 views
The quotient of two numbers is 8. The sum of the same two numbers is 72. What is the two numbers
1. 3 answers
2. 863 views
Let's say that you find a slope of 6.671×10-14 for square plates of width 11.5 cm. What do you get for the value of the
1. 3 answers
2. 488 views
A 20.0kg mass is placed a the top of a 3.5m long, 15degree ramp. When released from rest, the mass accelerates down the ramp.
1. 1 answer
2. 939 views
Risk is to chance as forthought is to?
1. 1 answer
2. 1,199 views
How long will it take $7,000 invested at 5.5% compounded daily to grow to $14,000? Round your answer to the nearest tenth of a
1. 0 answers
2. 600 views
The adaptations of land-dwelling organisms forgetting oxygen show a trade-off of two needs. What are they?
1. 6 answers
2. 516 views
meobdailfr.... its french what is the unscrambled...
1. 1 answer
2. 426 views
Is the experiment to recreate the big bang theory by colliding to atoms being continued? If successful, would it really create a
1. 1 answer
2. 450 views
what is the 5th grade definition of calcium chloride
1. 2 answers
2. 406 views
Where can i find out what format to type my Background Information that entails Activities I have been in, the awards I have
1. 1 answer
2. 364 views
how are scientist approaching the study of Earth today?
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2. 967 views
Traditionally,how have different fields of earth science been studied?
1. 3 answers
2. 836 views
Find the domain and range y=x^2-3x+8. Explain how you found the domain and range.
1. 1 answer
2. 428 views
How was the weather related to the amount of electricity used in Riverwood? What ways did the power company use the river to
1. 2 answers
2. 385 views
Does anyone know what happened or have any good information about what happened to John F. Kennedy? OH! and if anyone has any
1. 0 answers
2. 608 views
How can i make nine equations with the numbers 2, 7 and one other number to equal 8. The first equation should have one as the
1. 1 answer
2. 535 views
Does my answer look correct?Find the derivative. 11, y= (e^3-e)(e+5)/6e my work: ((6e)(4e^3 + 15e^2 - 2e - 5) - (6)(e^4 + 5e^3 -
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2. 1,330 views
If I wanted to say "My brother was born", could I write "Mi hermano fue nacido"?Yes, but "mi hermano nacio'" is more frequently
1. 0 answers
2. 550 views

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