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Questions (551)

Ho can i balance a equation in chemistry
1. 1 answer
2. 103 views
Express 4164.086 correct to 2 s.f
1. 1 answer
2. 116 views
Which of the following quadrilateral has diagonal intersecting at the right angle?
1. 1 answer
2. 81 views
The formula for the sum of interior and exterior of a regular n-sided polygon is?
1. 1 answer
2. 71 views
A man invested 6000 for 4 years in a simple rate of 9% per annum. what is his amount at the end of the four years?
1. 1 answer
2. 140 views
Simplify √12+√3
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2. 77 views
What reagents (A,B) would you require to carry out the transformation shown below:Cyclohexene --- A----> DiBromocyclohexane
1. 1 answer
2. 161 views
SN1 reactions sometimes undergo carbocation rearrangements, but E1 reactions do not because the carbocation intermediate does
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2. 182 views
Which is closest to h, the height in feet Gina should use for the ramp according to her design?
1. 0 answers
2. 97 views
Twelve friends are sharing 8 packages of pencils. What fraction of a package will each friend get?
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2. 155 views
Find the greatest digit that Will make each sentence true1234>1[]34
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2. 171 views
20.484.163 in expanded form
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2. 162 views
What is the chemical formula for copper(1) sulfite
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2. 143 views
Venn diaram
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2. 331 views
In a state lottery, 4 numbers are drawn with replacement from an urn containing balls numbered 0-9, inclusive. Find the
1. 1 answer
2. 272 views
Do the vectors u = [2 1 -1] v = [1 -1 4] and w [3 2 1] span R3?
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2. 264 views
give the coordinates of any point in the x-z plane.
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2. 311 views
Rhodes Wholesale Merchandise had 4,000 preferred shares of $5 no par value issued at $20 per share and 15,000 common shares of
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2. 330 views
Determine the point at which the tangent to the function f(x)=(e^2)/(x^3) is horizontal
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2. 333 views
Create an equation of a reciprocal of a quadratic that has no vertical asymptotes and an absolute maximum point at (0, –0.25).
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2. 329 views
Create a function that has 2 vertical asymptotesa) provide an analysis for the behavior of the function around the vertical
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2. 288 views
For a polynomial function y = f(x):f(x) > 0 when 1 < x < 3 or x > 3 and f(x) < 0 when x < –2 or –2 < x < 1 a) Write a
1. 1 answer
2. 375 views
Without using long division, or synthetic division, prove that expression x^2 + 5x + 6 is a factor of polynomial x^4 + 5x^3 +
1. 2 answers
2. 443 views
determine f(-2) for the function f(x) = 2/x^2
1. 2 answers
2. 203 views
Differentiate and simplify the following using the product rule and simplify completely: y = (√x)(1/x)
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2. 323 views
determine f(2) for the function f(x) = 2/x^2
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2. 204 views
Find the equation of the tangent to y=x^2+6x+9 which has a slope of 6.
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2. 793 views
The number of items made per week by a company is given by n(t) = 40t + 2000, where t is time in weeks. The profit of the
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2. 676 views
28+56t+28w
1. 1 answer
2. 283 views
The projectile launcher shown below will give the object on the right an inital horizontal speedof 12.10 m/s. While the other
1. 1 answer
2. 526 views
Is it true that a line that goes upward from left to right has a positive slope?
1. 1 answer
2. 262 views
25.0 mL of a 0.20 mol/L solution of potassium hydroxide is mixed with 25.0 mL of a 0.15 mol/L solution of hydrobromic acid. What
1. 1 answer
2. 275 views
The population of males’ heights can be represented using the normal distribution curve. You are given that the mean height of
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2. 259 views
How many moles of solute are present in (1.890x10^1) g of a (4.5x10^0) % w/w solution of sodium bromide? (answer to 2 s.d in
1. 1 answer
2. 256 views
How do you find the height of a triangular pyramid? Please help!!
1. 17 answers
2. 385 views
A 88-kg ice-skater glides with a speed of 5 m/s toward a 13-kg sled at rest on the ice. The ice-skater reaches the sled and
1. 1 answer
2. 389 views
How does the mass of Mars compare to that of Earth?A) Larger than that of Earth B) About the same C) Slightly smaller than that
1. 2 answers
2. 657 views
What contributed to the “identification” of the canals on Mars?A) A translation error of the word “canali” B)
1. 2 answers
2. 285 views
Who observed the famous “channels” on Mars?A) Herschel B) Schiaparelli C) Kepler D) Newton
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2. 267 views
Assuming an extraordinarily broad perspective of theoretical biochemistry — at which realmsway Methane (CH4) and Ethane (C2H6)
1. 0 answers
2. 274 views
Why is helium not considered relevant in conjunction with biochemistry?A) It is not very common in the Universe B) High level of
1. 0 answers
2. 294 views
Summarize why Earth’s moon and Mercury have (and had) virtually no chance of hosting life. Use your own words. Adopt
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2. 347 views
Are the terms 2x^3y and 2xy^2 like terms? Explain.
1. 2 answers
2. 202 views
Examine the following reaction:NH4Cl (s)→NH3 (g)+HCl (g)ΔH0=176 kJ At 25 °C, this reaction has a ΔG0 of 91.1 kJ. What is
1. 2 answers
2. 614 views
In a class of 40 students, the number of students who study French is 10 more than the number who study History.How many study
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2. 402 views
What is the x- and y-intercepts of the line y=1-x?
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2. 282 views
What is the slope and the y-intercept of the line y = –2x + 2?
1. 1 answer
2. 284 views
Which element in period 2 has four electrons in its electron-dot structure?
1. 1 answer
2. 487 views
Va = (-2;1;1), Vb = (1;5;0), Vc = (4;4;-2), PRvc = (3a - 2b) - ?
1. 1 answer
2. 196 views
Find the equation of the tangent to the curve y = 2 - sqrt(x) perpendicular to the straight line y + 4x - 4 = 0. Can you guys
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2. 334 views
Convert 2 e^{\pi i/6} to rectangular form.
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2. 1,144 views
Use identities to find the exact values at A for the remaining five trigonometric functionsCos(A)= -(sqr of 3, then divided by
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2. 615 views
Rebecca, Justin, and Robert are trapped in a rectangular room 8 feet deep and 10 feet tall. Two opposing walls are closing in at
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2. 555 views
Rebecca, Justin, and Robert are trapped in a rectangular room 8 feet deep and 10 feet tall. Two opposing walls are closing in at
1. 2 answers
2. 495 views
You have five cups of bird seed. You use 2/3 cup of bird seed each day. How many days will your bird seed last?
1. 1 answer
2. 540 views
An autographed baseball rolls off of a 8.9 m high desk and strikes the floor 3.0 m away from the base of the desk. How fast was
1. 1 answer
2. 459 views
A 1000 kg roller coaster begins on a 10 m tall hill with an initial velocity of 6m/s and travels down before traveling up a
1. 1 answer
2. 2,258 views
A person invest $4000, part at 8.5 per annum and part at 9.5. At the end of the the year the 8.5 made $16 more. How much was
1. 1 answer
2. 505 views
A woman is 43 years old, and her daughter is 15 years old. How many years will it be before the woman’s age is just twice her
1. 1 answer
2. 1,307 views
“She asks my name, and when I tell her she hoots, ‘Barbara Bush!’ Despite my vigorous protestations, the joke is repeated
1. 4 answers
2. 2,485 views
(Nickel and Dimed) Ehrenreich’s experiences with low-wage workers revealed to her that in general, these workers treat each
1. 3 answers
2. 1,872 views
I need help. I read over my book over and over again and I still don't get the question or even know how to answer it.Describe
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2. 457 views
A cone is inscribed in a sphere of diameter 32 cm. Angle between height and slant height of the cone is 30. Find the volume of
1. 1 answer
2. 646 views
A cone has base area of 17pi m2 and volume of 34pi m3. Find the angle between slant height and the base plane.
1. 1 answer
2. 479 views
What angles do lateral faces make with the base plane of a rectangular pyramid with base edges of 10 m and 16 m and with lateral
1. 1 answer
2. 627 views
How do I find the angle between lateral edges of a regular triangular pyramid if the edge is 60m and the height is 18m? Please
1. 1 answer
2. 613 views
Does a regular nonagon have point symmetry?I know it has rotational symmetry but I am not sure if it would work for point
1. 2 answers
2. 1,797 views
A car skids to a stop, leaving four skid marks with an average length (D) of 60 feet. The road is asphalt. Skid tests reveal a
1. 1 answer
2. 2,255 views
X+ 13/x=8/3
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2. 306 views
HOW MANY GRAMS OF OCTANE WOULD BE NEEDED TO RELEASE 3,500 kJ OF HEAT?2C8H18 + 25O2-----> 16CO2 + 18H2O DeltaH= -5,530 kJ/mole of
1. 1 answer
2. 749 views
Hello and I’m sorry, I was wondering how to solve this problem, it looked easy at first but it was really difficult to find
1. 2 answers
2. 872 views
You are writing to a teacher or an administrator at Edwards school. The context of your letter should state the reason why it is
1. 1 answer
2. 661 views
At room temperature and pressure RbI crystallizes with the NaCl-type structure. (a) Use ionic radii to predict the length of the
1. 2 answers
2. 1,813 views
Two concentric circles are such that one circle has half the radius of the other. If a point is chosen at random inside the
1. 1 answer
2. 1,773 views
Witch of the following shows the path followed by nerve impulses in a reflex
1. 6 answers
2. 855 views
The smaller angle between the hands of a clock at 8:43 is what?
1. 3 answers
2. 2,878 views
A sum of $7260 is invested at 11 1/4 % simple interest for one year. The amount, in dollars, that must be invested at 7 1/2%
1. 3 answers
2. 2,741 views
Potassium superoxide, KO2, is used for producing oxygen and removing carbon dioxide in selfcontainedbreathing units, space
1. 0 answers
2. 1,411 views
Suppose you have a mixture that contains CaCl2, plus other compounds that do not react with AgNO3. If 0.2918g of the mixture
1. 1 answer
2. 652 views
An organic compound containing only C, H, and possibly O was subjected to combustion analysis. Asample weighing 0.4801 g yielded
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2. 760 views
CaCl2 reacts with AgNO3 in aqueous solutions to produce a precipitate of AgCl that can be filtered andweighed. The balanced
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2. 1,284 views
A stock protein sample that has a concentration of 250.0mg/ml. You need to dilute this sample to 20.0 mg/ml in buffer. The final
1. 1 answer
2. 814 views
A mixture of KCr(SO4)2 and its hydrate KCr(SO4)2•12H2O has a mass of 1.6336 g. After heating to driveoff all the water, the
1. 1 answer
2. 1,175 views
Nine wonderful students decided to buy their math teacher an expensive present, each contributing the same amount of money. Four
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2. 2,613 views
A)2B)3*** My ansnwer C)4 D)8
1. 1 answer
2. 313 views
How does the duration of a quarter note compare to a dotted quarter note?A) longer B) shorter**** my answer C) the same
1. 1 answer
2. 2,591 views
to which subset of real numbers does the number -22 belong?
1. 2 answers
2. 1,875 views
The number of 3 digit odd numbers with no repeated digits is?
1. 1 answer
2. 439 views
In "Girls Can We Educate We Dads?," the writer uses dialect for all of the following reasons except toA) create a sense of
1. 2 answers
2. 1,906 views
A 86.3mL sample of water is initially at 17.4 degC. How many kilojoules (kJ) of heat must be added to raise the temperature of
1. 1 answer
2. 638 views
How many moles of nitrate ions are present in 24.0mL of a 2.93M solution of potassium nitrate?I'm thinking this is some form of
1. 1 answer
2. 585 views
Having a hard time with this question: Help PleaseWith Replacement: This is a multi-stage experiment. There are 7 colored cubes
1. 1 answer
2. 507 views
This 3 dimensional shape has 6 faces that are triangles as well as one base that is a polygon. What is this shape?
1. 3 answers
2. 652 views
Having a hard time with this question: Help PleaseThis is a multi-stage experiment. There are 7 colored cubes in a bag. The
1. 2 answers
2. 463 views
There is a bag with 200 cubes in it. Some of the cubes are red and some are black. You reach into the bag 20 times, each time
1. 1 answer
2. 1,184 views
Circle the prime numbers in the following set of numbers. Show your work.953, 1,427, 2,971 I can tell whether each number is
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2. 718 views
If 50.00 mL of 0.250 M barium nitrate are combined with 50.00 mL of 0.400 M sodium sulfate, how any grams of precipitate will
1. 2 answers
2. 580 views
write the equation in the slope-intercept form 8x − 3y + 6 = 0
1. 1 answer
2. 1,343 views
PLEASE HELP!!!What role did the city of Wittenberg, Germany play in the renaissance?
1. 5 answers
2. 889 views
PLEASE CHACK MY ANSWER!!!Discussion for Applications of Linear Systems When solving a system of equations, how do you determine
1. 2 answers
2. 2,092 views

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