09/09/21

Math-Pre Calcus
True or False? If a function is continuous, the domain must be (−∞,∞)
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09/09/21

Linear Differential Equations
Find the particular antiderivative that satisfies the following conditions:dx/dt=4e(^t)−2; x(0)=7.I know dx/dt of 4e^(t)-2 is 4e^(t)-2t, but I do not know what to do with the x(0)=7.
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09/07/21

mathematics calculus

Calculate ∂f / ∂x and ∂f /∂y if: a) f(x,y) = 3x3y - lny b) f(x,y) = xey / 1+x2y and please explain step by step!... more
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09/07/21

How much more money than kevin does charles have after 1 year
Two brothers, Kevin and Charles, each Inherit $8000. Kevin invests his inheritance in a savings account with an annual return 3% , while Charles invests his Inheritance in a CD paying 5% annually.... more
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09/07/21

From the Intermediate Value Theorem, is it guaranteed that there is a root of the given equation in the given interval? Yes or no?
x4 + x - 3 = 0 (1,2)
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09/06/21

What is the sign of the following?
sec(-θ), given that θ is in the interval (180º, 270º).
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09/05/21

Consider the graph of the function y = sin x + cos x.

Consider the graph of the function y = sin x + cos x. Describe its overall shape. Is it periodic? How do you know?
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09/02/21

A bicycle with 19-in.-diameter wheels has its gears set so that the chain has a 7-in. radius on the front sprocket and 4-in. radius on the rear sprocket. The cyclist pedals at 180 rpm.
The linear speed of the bicycle in inches per minute =  in/minThe speed of the bike in miles per hour =  mph
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09/01/21

Factoring quadratics

I need help with factoring quadratics 25x^2+15x+2 x^2+3x-28 x^2+9x+18 26x^2=19x+3
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09/01/21

Roots of cubic functions

Consider a polynomialp(x) = x3 + ax2 + bx + cWhat sufficient conditions for a,b,c will hold in order to find the rootsof p(x) just by factorization only?(a) ab=1c(b) ac= b(c) bc= a(d) ac=1b
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08/31/21

What is the first time (to the nearest second) after 12:00 midnight for which the minute hand and hour hand of a clock make a 30° angle?
I need the answer expressed in minutes and seconds, please!
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08/22/21

You and some neighbors are landscaping a community park. The organizer of the project selects an area for two congruent triangular rock gardens.

You agree to be in charge of placing the pieces of wood to outline the gardens. The only tools you have are a saw, a protractor, and two very long pieces of wood. Describe one way to guarantee that... more
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08/07/21

Squeeze theorem
Given the sequence (3n + 1) 1/n, what would the upper bound be if the squeeze theorem was used to prove that the sequence converges for n approaching infinity?
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08/07/21

MATH HELP, differential equation
Find all solutions of the equation y' + 2y = b(x) , (−∞ < x < +∞)where 1 − |x|, se |x| ≤ 1 b(x) = 0, se |x| > 1
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08/02/21

Three circles of radii 7.1, 10.9, and 13.5 cm are mutually tangent (see below). Find the shaded area bounded by the three circles. HINT: Connect the centers of the 3 circles.
Three circles of radii 7.1, 10.9, and 13.5 cm are mutually tangent (see below). Find the shaded area bounded by the three circles. HINT: Connect the centers of the 3 circles.
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07/29/21

algebra factor problem

Factor: 25𝑔2−40𝑔+16
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07/29/21

MATH QUESTION!!
A telephone pole has a wire attached to its top that is anchored to the ground. The distance from the bottom of the pole to the anchor point is 49 feet less than the height of the pole. If the wire... more
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07/29/21

C13: What is the probability that a randomly selected person in the country enjoys cooking or shopping or​ both?
Fifty-four percent of people in a certain country like to cook and 52​% of people in the country like to​ shop,while 22​% enjoy both activities. What is the probability that a randomly selected... more
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07/29/21

Suppose that 20​% of people have a dog​, 32​% of people have a cat​, and 8​% of people own both. What is the probability that someone owns a dog or a cat​?
Suppose that 20​% of people have a dog​, 32​% of people have a cat​, and 8​% of people own both. What is the probability that someone owns a dog or a cat​?
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07/28/21

Find the equations of the two tangent lines to the graph of f that pass through the indicated point
Find the equations of the two tangent lines to the graph of f that pass through the indicated pointf(x) = 4x − x2line with positive slope, y =?line with negative slope, y =?
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07/23/21

find the indefinite integral

find the indefinite integral:∫dx/sinx+tanx
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07/23/21

find the indefinite integral

∫dx/(x2+a2)2
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07/22/21

Need help on 2 homework problems
Hey, Need some help with two homework problems, thanks!Find dr/ds where t is a constant. Show all work. r2+2s sqrt(t) = r*tDetermine if the statement is true or false.If f is differentiable, then... more
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07/22/21

Solve the system of linear equations. (If the system is dependent, express your answer in terms of t, where x = x(t),  y = y(t),  and z = t.
Solve the system of linear equations. (If the system is dependent, express your answer in terms of t, where x = x(t), y = y(t), and z = t. If the system is inconsistent, enter... more
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07/22/21

How many different numbers are possible?
A personal identification number consists of 3 letters followed by 3 digits. The letters X,Y, and Z are not used and the last digit cannot be 0 or 9.__?__ different numbers
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