10/08/19

Finding an equation for a tangent line
Problem: Find an equation for the line that is tangent to y = 2-x / 2+x at (1, 1/3). I am not sure how to begin with this problem, but I believe I have to find the slope, then plug that into the... more
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09/26/19

How to find an interval that contains a solution?
These are similar to some problems I was assigned for homework ad I tried googling them, but I don't think I even understand what it is asking me For each of the following equations, find an... more
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09/24/19

An isosceles trapezoid ABCD has bases AD=17 cm, BC=5 cm, and side AB=10 cm .Through the vertex B there is a line, which bisects diagonal AC and intersects AD at point M. What is the area of BDM?

An isosceles trapezoid ABCD has bases AD=17 cm, BC=5 cm, and side AB=10 cm. Through the vertex B there is a line, which bisects diagonal AC and intersects AD at point M. What is the area of a... more
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09/24/19

Where does the Quadratic Formula come from?
A. Start with the standard form of a quadratic equation.ax2 + bx + c = 0B. Complete the square.C. Simplify.
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09/23/19

Vertical Translations!
Find an equation for a cosine function having an amplitude of 2, a period of 2pi, horizontal shift of pi/2 to the right, and a vertical shift of -5.
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09/19/19

Find the derivative of each of the following functions using the definition of derivative

a) f(x)=ax+b (Assuming that a and b are non zero constants.)
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09/19/19

What is the slope-intercept form of the line whose slope is 3 and that passes through the point (-3,7)?
I have y=3xt... I can't figure out how to get b. Please help!
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09/18/19

Find the derivative of each of the following functions using the definition of derivative
a) f(x)=ax+b (Assuming that a and b are non zero constants.)b) f(x) = (2x)/(x+1)
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09/17/19

Determine which one of the following rules for continuity is violated at -5
Let f(x)= 3x + 18 if x < -5 sqrt(x+14) if x > -5 -2 if x = -5
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09/15/19

What is the equation that passes through the point (1/2,-2/7) and is perpendicular to the line 3x-6y=1
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09/12/19

what is (4+3i)^4
I got -527+336i but I can't figure out how to get that answer.
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09/11/19

Find the points on the given curve where the tangent line is horizontal or vertical
Assume (0≤θ≤2π). Enter your answers as a comma-separated list of ordered pairs.)r=e^(θ)  horizontal tangent     (r, θ) =    vertical tangent     (r, θ) = Apparently I keep getting this... more
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09/11/19

A striaght line y=mx+c is to be reflected about the line y=x. State tve equation of the image of line y=mx+c in the form of y=kx+l.
M =/=(0,-1)Express answer k and l in terms if m and/or c
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09/10/19

How do i find the constraint inequality??????

here is the problemYou grow and sell tomatoes and green beans. It costs $20 to grow a bushel of tomatoes and it takes 3 sq. yards of land. It costs $10 to grow a bushel of beans, and it takes 6... more
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09/10/19

Pre Calculus 11 - Trigonometry
P and Q are both points on the unit circle. The standard angle of P is 45° and the standard angle of Q is 150°. Find the length of the chord PQ. Round your answer to 2 decimal places.
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09/10/19

How to get the answer two only using the numbers 1 4 5 9?
And you can't add numbers to make double digits, for example you can't put 1 and 4 to make 14.
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09/05/19

Find an​ nth-degree polynomial function with real coefficients satisfying the given conditions
n=3 3 and 4i are zeroes f(1)=102
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09/02/19

A regular octagon rests on one of the flat sides and has a total height of 10 ft. What is the measure of one of the octagon’s sides ?
I have to use a method like this : 360/7 = 51.4251.42 = top of one angle180 - 51.42 = 128.58128.58/2 = 64.2964.29 = side angleArea = 1/2*Base*Heighttan (64.29) = h (7/2)3.5 * tan (64.29)h = 7.26, A... more
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08/31/19

Pre Calculus 11 - Geometrical Sequences
Matrioshka dolls are Russian nesting dolls where bigger doll houses a smaller doll, and so on, as suggested in the picture. Suppose the doll’s weight progresses in a geometric pattern. If the... more
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08/21/19

Parabola and directrix

A parabola has a focus(0,2) and a directrix line y=1 . Describe what happens to this parabola if the directrix line moves up vertically and moves farther away from the focus.Describe what happens... more
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08/19/19

limit of summation notation of (i^4/n^5+i/n^2) when n goes to infinity on interval[0,1]
evaluate limit by recognizing it as a Riemann sum for a function f(x) on the interval [0,1],and then using integrationlimit(n to inf) sigma(i^4/n^5+i/n^2) ,,(i from 1 to inf)my teacher said that we... more
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08/19/19

Combine the radicals, I wasn't sure what to do with the √7, or how to simplify it, i need a brief explanation
Combine the radicals4√7+3√28
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08/18/19

True/False: Let b ∈ R, b>0 and let B:={x^2 | x ∈ (−b,0)}. We then have that inf(B) = 0 and sup(B) = b^2
Statement: "Let b ∈ R, b>0 and let B:={x^2 | x ∈ (−b,0)}. We then have that inf(B) = 0 and sup(B) = b^2"I'm not sure where to start with this question. Can anyone help?
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08/18/19

Find the area of the region bounded by following

Sketch the region enclosed by the given curves and decide whether to integrate with respect to x or y. Find the area of the region bounded by:2y=5sqrtxy=32y+4x=9
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08/08/19

If y= Find dy/dx
y= (4x-5)^3 (4x+2)^3 find dy/dx how do i solve this problem to find dy/dx?
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