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Questions (37)

The locus of a point whose distance from point (0,5) is always 3/4 of its distance from the line Y=8 is an elipse. Find the
1. 1 answer
2. 488 views
calculate the work performed if a balloon contracts from 12.32L to 422 ml due to an extermal pressure of 3.1 atm
1. 0 answers
2. 451 views
A uniform solid cylinder of radius R and a thin uniform spherical shell of radius R both roll without slipping. If both objects
1. 1 answer
2. 5,778 views
A 200g bottle has a mass of 340g when filled with water and 344g when field with blood plasma. what is the density of plasma?
1. 1 answer
2. 1,150 views
find the are of the surface of the part of the sphere (x^2)+(y^2)+(z^2)=4 that lies above the plane z=4
1. 1 answer
2. 522 views
find the volume of the solid obtianed by rotating the region bounded by the given curves about the line x=6x=y^2 , x=1
1. 0 answers
2. 401 views
Calculate the derivative.?d/dx ∫ from √x to x^2 tan9tdt = Use symbolic notation and fractions where needed.
1. 1 answer
2. 469 views
A factory produces bicycles at a rate of 80+0.3t^2−1.1t bicycles per week (t in weeks). How many bicycles were produced from
1. 3 answers
2. 4,284 views
calculate the volume of 0.080 acetic acid needed to prepare 4.0 L of aceic acid solution with a PH of 4.00L=
1. 1 answer
2. 519 views
when 1.00 g of stearic acid ( a saturated fatty acid) is dissolved in water, then diluted to exctly 10.00 ml, the PH of the
1. 1 answer
2. 658 views
calculate the volume of 0.050 acetic acid needed to prepare 4.0 L of aceic acid solution with a PH of 3.80L=
1. 1 answer
2. 720 views
A 4.00 L solution of KOH is prepared by diuling 400.0 m 0f 0.290 M KOH with warer[OH-]=
1. 1 answer
2. 1,073 views
calculate the PH during the titration of 50.00 ml of 0.300 M HNO3 with 0.600 M KOH after 0, 15.50, 25.00, and 40.00 ml of KOH
1. 2 answers
2. 841 views
calculate the PH during the titration of 50.00 ml of 0.300 M HNO3 with 0.600 M KOH after 0, 15.50, 25.00, and 40.00 ml of KOH
1. 1 answer
2. 642 views
Calculate R8 for f(x)=8−x over [3,5].R8=
1. 1 answer
2. 633 views
Calculate R8 for f(x)=8−x over [3,5].R8=
1. 1 answer
2. 2,040 views
Calculate R8 for f(x)=8−x over [3,5].R8=
1. 0 answers
2. 487 views
find L- Hospitallim x-> inf f(x)=1/e^(-x)
1. 0 answers
2. 406 views
find L- Hospitallim x_---- inf 1/e^(-x)=
1. 2 answers
2. 1,184 views
Find the radius and hight of cylinder with voume 64π and radius r between 1 and 5 that has smallest possible surface area. A
1. 2 answers
2. 617 views
calculate the half-life of a first- order reaction if the concentration of the reactant is 0.0396 M at 12 seconds after the
1. 1 answer
2. 633 views
calculate the half-life of a first- order reaction if the concentration of the reactant is 0.0396 M at 12 seconds after the
1. 1 answer
2. 676 views
How long would it take for the concentration of the reactant to drop to one-forurth its initial value?initial concentration of
1. 1 answer
2. 671 views
if the initial concentration of the reactant in the first order reaction A→products is 0.64 mol/L and the half-life is 30 s,
1. 1 answer
2. 779 views
Find the angle that maximizes the area of the isosceles triangle whose legs have length l=31angle=
1. 0 answers
2. 687 views
Find the angle that maximizes the area of the isosceles triangle whose legs have length l=31angle=
1. 4 answers
2. 4,605 views
Your task is to design a rectangular industrial warehouse consisting of three separate spaces of equal size.?The wall materials
1. 0 answers
2. 984 views
A box is constructed out of two different types of metal. The metal for the top and bottom, which are both square, costs $4 per
1. 2 answers
2. 745 views
Suppose that 404 ft of fencing are used to enclose a corral in the shape of a rectangle with a semicircle whose diameter is a
1. 1 answer
2. 1,736 views
Find a point c satisfying the conclusion of the Mean Value Theorem for the following function and interval.f(x)=x^−1 [1,9]
1. 1 answer
2. 4,161 views
Estimate 1/(sqrt(82)) using linear approximation and the exact value for 1/(sqrt(81))Your estimate:
1. 0 answers
2. 550 views
A searchlight rotates at a rate of 4 revolutions per minute.?The beam hits a wall located 13 miles away and produces a dot of
1. 3 answers
2. 6,259 views
A searchlight rotates at a rate of 4 revolutions per minute.?The beam hits a wall located 13 miles away and produces a dot of
1. 2 answers
2. 1,240 views
Use the Linear Approximation to estimate ∆f=f(3.5)−f(3) for f(x)=2/(1+x^(2))?Δf ≈ Estimate the actual change. (Use
1. 2 answers
2. 2,599 views
A 15 ft ladder leans against a wall. The bottom of the ladder is 4 ft from the wall at time t=0 and slides away from the wall at
1. 2 answers
2. 7,413 views
Find the volume of the solid obtained by rotating the region under the graph of the function f(x)=x^8/9 about the x-axis over
1. 4 answers
2. 2,736 views
A street light is at the top of a 19 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 5 ft/sec along a
1. 0 answers
2. 1,246 views

Answers (6)

calculate the Ph in the titration of 50.00 ml of 0.100 M ammonia with 0.100 M HCl after 0,24.00,50.00, and 74.00 ml acid have been added Ka((NH3)= 1.8x10^(-5) PH= ............ when 0 ml added. PH= ............ when 24.00 ml added PH= ............ when
it says the answer is incorrect
it says the answer is incorrect
Find the volume of the solid obtained by rotating the region under the graph of the function f(x)=e^x about the x-axis over the interval [0,2].
Find the volume of the solid obtained by rotating the region under the graph of the function f(x)=(2)/(x+1) about the x-axis over the interval [0,4].
A street light is at the top of a 19 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 5 ft/sec along a straight path. How fast is the tip of her shadow moving when she is 40 ft from the base of the pole?

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