12/14/21

Given sin(b)= 0.2183 and b is in quadrant 2, find approx. values of sin(2b) and cos(b/2)
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12/14/21

What is the work done on the basket by friction, tension force, and normal force?
A basket of letters, having a mass of 5.00 kg was pulled to the right with a displacement of 2.50 m on the ground surface. A thick string is tied to the bottom of the basket. (a) What is the work... more
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12/07/21

The energy absorbed when ammonium chloride dissolves in water can be measured in
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12/07/21

How would you tell how much the spring could be compressed?
Hello, here is the problem: A.12kg block is held in place against the spring by a 35N horizontal external force. the external force is removed, and the block is projected with a velocity (v1) of... more
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12/07/21

What is the measure of each exterior angle of a regular 25-gon?

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11/30/21

Suppose that y varies directly with x, and y= 8 when x= 16.
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11/30/21

Solve the equation for x on the interval [0,2pi]
The equation is cos^2(x)-sin^2(x)+sin(x)=0
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11/30/21

Determine the force
A person lifts a 8-kg dumbbell. The combined mass and length of his hand and forearm are 4 kg and 0.4 m respectively. Determine the force exerted by his muscles 0.01 m from the pivot point? Assume... more
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11/30/21

High school Physics Acceleration
A 50kg bobsled slides down an ice track starting (at zero initial speed) from the top of a 148m high hill. The acceleration of gravity is 9.8 m/s2 . Neglect friction and air resistance and... more
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11/30/21

Find the change in profit
A company has a weekly marginal profit function given by P'(x)=30x-0.33x^2-235 dollars per item when x items are made and sold. Find the change in profit when the number of items made and sold... more
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11/30/21

a line passes through point (-8,4) and has a slope of 3/4

write the equation in ax+by=c form for this line use integers for a,b,and c
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11/30/21

This is based on the Unit Circle
Without using a calculator, compute the sine, cosine, and tangent of 210∘ by using the reference angle.(Type sqrt(2) for √2 and sqrt(3) for √3.)What is the reference angle? Incorrect---... more
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11/30/21

Find the equation of the line
The Slope is 3/2 and the y-intercept is (0,-2) what is the equation of the line in slope-intercept form?
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11/28/21

NEED ASAP! use a right triangle to write cos(tan^-1 x/2). as an algebraic expression

cos ( tan -1 x/2). (x over 2)
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11/28/21

NEED ASAP! verify the following identity: (see below)
cos(α - β) ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾ = cot α + cot βsin α cos β(HINT: if you start with the left hand side, there are roughly 5 steps)please show every step
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11/27/21

The kinematic equation for the coordinate x(t) of a moving particle

The kinematic equation for the coordinate x(t) of a moving particle is given in the following implicit form: x2 – (t+1)2 = 3 The initial values are: x(0) = 2 and vx(0) = 0.5 as t = 0. Find the... more
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11/27/21

The terminal velocity of a 3×10^−5 kg raindrop is about 9 m/s . Assume a drag force FD=−bv.
Determine the value of the constant b. Express your answer using one significant figure.
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11/27/21

Separable Differential Equations
Newton's law of cooling states that the temperature of an object changes at a rate proportional to the difference between its temperature and that of its surroundings. Suppose that the temperature... more
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11/26/21

definite integrals
let G'(t)= g(t) and G(0)=4. Use the figure to find the values of G(t) at t=5,10, 20, 25. there is a graph provided of the function g(t). but how do find the values of g(t)?
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11/25/21

Answer the following:
From a campsite the angle of elevation of the top of a mountain is 5 degrees. The campsite is 12 km from the foot of the mountain. Which equation can be used to find the height, x km, of the... more
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11/24/21

What is the quarter point of y=1/2sin(2x+π)
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11/24/21

Calculus help

Indicate the domain over which the 𝑓(𝑥)=5𝑥^3−375𝑥 is decreasing.Decreasing on
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11/23/21

Newton’s Method. The golden ratio

Newton’s Method. The golden ratio is the positive root of the equation Starting with use Newton’s method to calculate rational approximations and Write your estimates as rational numbers. How... more
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11/22/21

Physics Help Momentum
Two marbles collide. One is traveling at 10 cm/sec and has a mass of 60 grams. The other marble has a mass of 50 grams and travels at -12 cm/sec. If the first marble rebounds backwards with a... more
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11/22/21

Calculus, Derivative By Definition
Locate the derivative of the function  f(x)=( x²+1)/x applying the definition of derivative only.  Then verify your result using the quotient rule of differentiation and the formula for the... more
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