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Kevin
Questions (772)
Calculate the volume (in mL) of a 0.150 M KCl(aq) solution that contains 10.00 g KCl
2 answers
1,111 views
a black car and a white car are sitting in the Sun, why does the black car get hotter
1 answer
496 views
Given the following data for a hypothetical reaction: M3+ (aq)+ L-(aq) ⇋ [ML]2+(aq); calculate the equilibrium concentration
1 answer
787 views
What are the domain and range of the function?
f(x)=^3√(x−3) Domain: (−∞,∞) Range: (−∞,∞) Domain: [3,∞) Range:
1 answer
567 views
A tennis player hits a tennis ball (m = 0.0550 kg) with a force of 32.2 N over a time interval of 0.22 s. If the ball as a
0 answers
1,045 views
A recipe that makes 10 mini loaves of banana bread calls for 1 1/4 cups flour. How much flour is needed to make 2 dozen
2 answers
1,476 views
What is the mass number for a neutral atom that has an atomic number of 33 and 35 neutrons? How do you get the answer
4 answers
518 views
A ball is dropped from a height h without air resistance. If the ball falls a distance of h/2 in a time t, how much time is
1 answer
1,852 views
Alex is two-fifths as old as Clara. The sum of their ages is 56. How old is Alex?
1 answer
379 views
Prove the following to be an identity
(cotx + cscx)*(1-cosx)=sin x
3 answers
503 views
Hydroselenic acid in formula form is
H2SeO4?
1 answer
2,187 views
sin^2 x + cos^2 x = 1
using that, derive what the cot^2 x would equal to. would it be csc^2 x - 1 = cot^2 x
1 answer
533 views
4cosx + 3 = 0
1 answer
421 views
Who are the new United States governments of 2017?
1 answer
388 views
The Jones family was one of the first to come to the U.S. They had 9 children. Assuming that the probability of a child being a
1 answer
7,619 views
A ticket in a typical lottery like Lotto 6/49 is usually $2. The
probability of winning Lotto 6/49 is 1 in 13,983,816. The
1 answer
692 views
The mars rover opportunity approached Mars on January 24th, 2004 and was moving with a velocity of 5.4km/s when it hit the
1 answer
674 views
identify if the given functions are one to one
1. f(x)=x^3-7x 2. g(x) = square root x-3+1 3. h(x)=4x^4-2x^2+11
1 answer
381 views
An egg is thrown nearly vertically upward from a point near the cornice of a tall building. It just misses the cornice on the
1 answer
1,248 views
What was the Peel Commission and what were the recommendation about Palestine?
1 answer
373 views
During the Colonial history of the Middle East, what were some of the countries interested in the Middle East?
1 answer
626 views
Can someone help me come up with a way the lithosphere and cryosphere interacts? I already have permafrost.
1 answer
463 views
N is between points M and P.
MN = 17 NP = 3y MP = 5y + 9 Find MP.
2 answers
2,364 views
Calculate % of lowering of vapour pressure if 36 g glucose is added in 312g of benzene
2 answers
652 views
Suppose you are provided with 500 dice.calculate the number of throws that is equivalent to one half life and the decay costant
2 answers
1,668 views
To make ice cubes you fill am ice tray with 150g of water at 20°C. How much energy must be removed from the water to create ice
1 answer
1,344 views
Find the zeros of the function
f(x)=(m^2-9)(9m^2+24m+16)
1 answer
404 views
A rectangle's width is 6 inches less than its length. If it's area is 216 square inches find the dimensions of the rectangle.
1 answer
1,259 views
A triangle has a height that is 4 inches less than its base. If the triangle has an area of 86 square inches, set up and resolve
1 answer
512 views
I'm a dad trying to help my daughter. Question is kx+6y-5=0 3x+2y+4=0. Need to find 1. Value of k such that the lines are
1 answer
510 views
Why is log1/a(x), a reflection over the x axis?
1 answer
451 views
A rectangle's length is 6 less than twice its width. The perimeter of the rectangle is 36 units. Set up and solve a system of
1 answer
965 views
A boat traveled 180 miles downstream and back. The trip downstream took 10 hours. The trip back took 30 hours. Find the speed of
3 answers
1,441 views
Describe transformations of f(x)=-f(2-x)
2 answers
444 views
Air is being pumped into a spherical hot air balloon at a rate of 50 cm^3/min. Determine the rate at which the radius of the
2 answers
769 views
find 2 exponential functions with asymptote of y=80 , with points (0,176) (1,169) (3,156) (5,146) (20,101) (30,90) (60,81).one
0 answers
433 views
find 2 exponential functions with asymptote of y=80 , with points (0,176) (1,169) (3,156) (5,146) (20,101) (30,90) (60,81).one
1 answer
693 views
A hang glider is standing at the top of a 3,000 foot cliff. The hang glider jumps off and begins to descend at a constant rate
1 answer
687 views
When swimming in the direction of the current in a river your average speed is 5 mph. When swimming against the current your
1 answer
590 views
A cashew and raisin mixture costs $2 per pound. You buy a 4.5,pound mixture of cashews and raisins. If cashews cost $2.50 per
1 answer
633 views
Set up a system of equations for each word problem
One scuba diver starts at a depth of 12 meters below the water's surface and
2 answers
598 views
Janet needs a rectangular piece of cardboard measuring 21 ft by 24 ft for a school project.
a) What is the area of the cardboard
1 answer
1,040 views
Which foods contain the most protein?
1 answer
505 views
Name any Margins of error that would happen in the lab "Which path requires the most energy? (gas)
0 answers
379 views
The number has four digits. It is greater then 11,but less then 12. The sum of the four digits is 13. The digit in the hundreds
1 answer
392 views
How does "Le Louvre", a museum in Paris, France connect to French Culture?
3 answers
502 views
The coordinates of the midpoint of the line AB are (1, 2). The length of the line AB is 10 units.
If the gradient of AB is 0,
1 answer
829 views
An automobile is traveling at 65 mph. If each tire has a radius of 15 inches, at which rate are the tires spinning in
2 answers
2,843 views
Find the value of x so that the line through the points has the given slope
(2,2) and (x,9);slope: undefined
4 answers
559 views
Write an equation in point-slope form to represent the situation. Assume a linear relationship between the given quantities.
In
0 answers
464 views
Find the slope of the line through each pair of points. Simplify as much as possible
(-2g,6h), ( 2i,7g)
0 answers
391 views
Make a conjeture about the symmetry of a) a product of two odd functions b) a product of two even functions c) a product of an
1 answer
522 views
Tommy is building a rectangular playpen for his pigs where one side of the play area is a side of his barn. He has enough
1 answer
527 views
Where can I find a pie chart that shows the percentage of resources used to generate electricity in the United States in 2015?
1 answer
574 views
You do not have enough 6-inch beads to make the rope, so you will use 10-inch beads instead. Write and solve an inequality that
0 answers
923 views
A spring gun shoots out a plastic ball at speed v0. If the ball's speed is increased by a factor of 2, what distance must the
1 answer
3,954 views
How many volleyball games would Rana have to schedule if there were 10 teams in the league and each team played each other
6 answers
2,451 views
A student of mass M = 62 kg takes a ride in a frictionless loop-the-loop at an amusement park. The radius of the loop-the-loop
0 answers
1,426 views
A 905 kg car moves in a circle of radius 13.1 meters in a flat parking lot. If the car can travel at 9.1 m/s without slipping,
1 answer
619 views
You push a 1kg block against a spring with spring constant k = 100 Nmon a horizontal table top. The spring is compressed to 0.2m
1 answer
618 views
Two blocks with equal masses m1 = m2
3.2 kg are connected via a pulley as shown in the above figure. Take the coefficent of
0 answers
669 views
A block of mass m1 hangs vertically and is attached by a string to a block of mass m2 on a frictionless slope inclined at angle
1 answer
662 views
Two blocks with equal masses m1 = m2
3.2 kg are connected via a pulley as shown in the above figure. Take the coefficent of
0 answers
709 views
A block of mass m1 hangs vertically and is attached by a string to a block of mass m2 on a frictionless slope inclined at angle
0 answers
566 views
23 children born. What is the probability that 22 are boys & 1 is a girl?
0 answers
433 views
A cotton reel has a diameter of 3cm. 91 metres of cotton goes around it.
How many times does the cotton go around the reel? And
1 answer
2,168 views
John painted 1/2 of a pole white and 3/8 of it green. What is the fraction he painted?
2 answers
555 views
A cylindrical tin of diameter 9cm and height 224cm is half filled with water.Find the volume of water in the tin.
3 answers
1,330 views
If θ is an acute angle and tan(θ)=5/12, then sin(θ)=??
2 answers
2,243 views
please help me
1)In the movie The avengers, Captain America sees an alien speeder incoming. The speeder passes directly overhead
1 answer
735 views
Totally confused on this question, Please help.
1)In the movie The avengers, Captain America sees an alien speeder incoming. The
1 answer
634 views
How much heat must be removed from 5.0g of water at 10°C to become ice at 0°C ?
2 answers
1,737 views
How much heat must be removed from 15.0g of water at 10°C to become ice at 0°C?
1 answer
552 views
if the solubilty of AgC2H3O2 is 5.0 x10^-2mol/L. What is the Ksp?
1 answer
662 views
If the concentration of I^-1 is found to be 2.4 x 10^-3 mol/L in a saturated solution of PbI2. What is the Ksp of PbI2?
1 answer
530 views
If the concentration of CN1- is found to be 1.4 × 10-6 mol/L in a saturated solution of AgCN, what is the Ksp
of AgCN?
1 answer
529 views
If x + y = xy = 3, what is x^3 + y^3?
I have tried solving this using algebra alone, but my teacher told me to use complex
1 answer
438 views
5/8 of the students in my class were boys.
When 6 girls joined the class, the number of boys equaled the number of girls. How
1 answer
744 views
How many liters of 0.85 M HCl solution would react completely with 3.5 moles Ca(OH)2?
1 answer
571 views
which of the following is equivalent to integral (a,b) k*f(x)+C)dx where k and C are constants
k integral (a,b)(f(x)+C)dx *****
1 answer
759 views
Find F'(x) for F(x)= integral[from 1 to x] of cos(t^3)dt
1 answer
423 views
lim (x--> infinidy) x^2/ln(x)=
-1 0 1 e does not exist
1 answer
413 views
Which of the following grows faster than e^x as x--> infinity
x^4 ln(x) e^-x 3^x .5e^x
1 answer
442 views
Sofia had 20 comic book and gave some of them to Heather.She uses a calculator to figure out that she gave away 0.15 of her
2 answers
964 views
Sofia had 20 comic book and gave some of them to Heather.She uses a calculator to figure out that she gave away 0.15 of her
1 answer
527 views
A transverse wave traveling in a string takes 1.40 s to move 13.2 m. The mass of a 8.50 m piece of the string is 1.60 kg. What
0 answers
609 views
The string is 0.95 m long with tension 8.00 N. The total mass of the string is 12.34 g. Find the period of the oscillation.
0 answers
409 views
Aaron baked two identical cakes.He cut one into 9 equal slices and the other into 18 equal slices.Which is greater 2/3 of the 9
2 answers
698 views
The difference in temperature between summer and winter causes the length of a pendulum in a clock to change by one part in
1 answer
591 views
You are given a choice of having 3/4 of an hour of free time 2/3 of an hour of free time on Friday afternoon.Which option would
3 answers
383 views
Dan baked enough peach pies for each of his 20 friends to have 1/8 of a pie. How many pies did he bake.
4 answers
1,239 views
A TRAIN IS TRAVELING AT A RATE OF 76KM EACH HOUR . ESTIMATED THE TIME IT WILL TAKE THE TRAIN TO TRAVEL 399KM??
3 answers
449 views
A small metal ball with a mass of m = 78.9 g is attached to a string of length l = 1.76 m. It is held at an angle of = 44.5°
1 answer
769 views
Two children are playing a game in which they try to hit a small box on the floor with a marble fired from a spring-loaded gun
1 answer
727 views
Consider an archery bow as behaving like a spring with a spring constant of 493 N/m. If an archer pulls the bowstring back for a
1 answer
619 views
Consider an archery bow as behaving like a spring with a spring constant of 493 N/m. If an archer pulls the bowstring back for a
1 answer
728 views
By how much will a 1.52 kg object stretch a spring that is suspended vertically if the spring constant is 135 N/m?
The object is
0 answers
649 views
Use the following information to calculate the speed of a ball in a pinball machine at a specific location. The ball is launched
0 answers
1,078 views
A bullet (m = 0.0250 kg) is fired with a speed of 94.00 m/s and hits a block (M = 2.20 kg) supported by two light strings as
0 answers
592 views
A small metal ball with a mass of m = 78.9 g is attached to a string of length l = 1.76 m. It is held at an angle of = 44.5°
0 answers
1,218 views
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