04/06/24

Consider the following function.
f(x) = (3 − x)e−xa) Find the intervals of increase or decrease. (Enter your answers using interval notation.) increasing       decreasing   (b) Find the intervals of concavity. (Enter your... more
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04/03/24

Baseball launch from edge of cliff at initial velocity of 40m/s at an angle 20 degrees below the horizontal. The cliff height of 200m above ground, baseball lands on elevated platform 20m above ground
a) Draw a diagram showing the initial height, final height, initial position, final position, initial velocity (with component), and the baseball's trajectory.b) Find the time it takes for the... more
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04/01/24

Heat of vaporization Physics

Heat of vaporization : Q=mLvFind what heat in calories is required to change 42 gg of 0∘C∘C ice to steam at 100∘C∘C. The heat of fusion Lf for water is 80 cal/gcal/g. The specific heat capacity of... more
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03/30/24

How do I solve this: Tan(x) = -15/8, sin(x) > 0

I tried putting in the Q2, but 15 was positive and 8 was negative. I tried putting it in Q4, but I could not get the right answer.
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03/28/24

Calculating initial temperature of a sample
A 50.8g sample of quartz, which has a specific heat capacity of 0.730 J⋅g^-1⋅°C^-1, is put into a calorimeter that contains 200.0g of water. The temperature of the water starts off at 15.0°C. When... more
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03/27/24

For the linear function h(x), if h(0) = -5 and h(5) = 15, which equation defines h?
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03/27/24

2Fe2O3+C3-->4Fe+3CO2 how many tons of Fe2O3 must react with Carbon if an iron company needs to make 50.6 tons of iron
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03/27/24

Plsssssss help, sorry for the trouble
An unmanned SpaceX rocket is fired off the launchpad in south Texas on a mission to the International Space Station. The rocket travels straight upwards, reaching a constant velocity of 267 m/s,... more
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03/25/24

Let f be a function that is even and continuous on the closed interval [−5,5] .
The figure above shows the graph of  , the derivative of a twice-differentiable function  , on the interval [–3, 4]. The graph of  has horizontal tangents at x = –1, x = 1, and x = 3. The areas of... more
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03/24/24

Who am I speeking to
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03/23/24

Physics 20: Newtons 1st and 2nd Laws + Weight-mass
A 70k swimmer falls off a 10m high diving tower. Determine the net force exerted by the water, if the water bringes the swimmer to a stop at 2.0s.
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03/21/24

probability stats

The grade appeal process at a university requires that a jury be structured by selecting four individuals randomly from a pool of nine students and nine faculty.​ (a) What is the probability of... more
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03/19/24

Balance the equation

12 - 6 = 9 -
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03/19/24

Evaluate the Integral. Show All Steps
Evaluate the Integral. Show All Steps. If possible attach a video going through the problem
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03/13/24

Eva purchased a car for $26,000. One year later the value of the car had dropped to $8,000. What is the percent decrease in the value of the car?
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03/11/24

Find the volume of the solid obtained by rotating the region bounded by the curves.
Find the volume of the solid obtained by rotating the region bounded by the curves y=tan^2(x), x=pi/4, x=0, and y=0 about the x-axis. PLEASE HELP ASAP.
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03/11/24

Calculus HELP!!!
Find the point on the parabola x^2 =2y that is closest to the point (4,1)
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03/11/24

Calculus Help!!!
Use logarithmic differentiation to find a formula for f'(x) if f(x) = x^sin(x) * (x-1)^20 * (3x^2 + 2)^24.
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03/11/24

Calculus Help!!!!
Use logarithmic differentiation to find a formula for f'(x) if f(x) = x^sin(x) * (x-1)^20 * (3x^2 + 2)^24.
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03/10/24

A quadratic function y = f(x) is plotted on a graph and the vertex of the resulting parabola is (-4, 6,). What is the vertex of the function defined as g(x) = f(x+2) -2
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03/09/24

If 20.0g Mg react with excess HCl to form magnesium chloride and hydrogen gas, how much MgCl 2 is produced? __Mg + __HCl → __MgCl2 + __H2
Stoichiometry, chemistry, measurement
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03/09/24

Evaluate the Integral using the indicated trigonometric substitution. (Use C for the Constant of Integration)
Evaluate the Integral using the indicated trigonometric substitution. (Use C for the Constant of Integration). Please show all steps. If possible please attach a video going through the problem. I... more
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03/08/24

Trigonometric substitution

Evaluate the integral:Integral of (-3x^3) / (sqrt((x^2) + 9) dx, x = 3tan(theta)
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03/07/24

Evaluate the indefinite integral. (Use C for the constant of integration.)
x rad 8-x^2 dx
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03/06/24

find the 9th term of the geometric sequence whose common ratio is 3/2 and whose first term is 5
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