Mathematics

Geometry help..........

each figure is a regular polygon. find the value of X (the figure is a square) one side is: X^2 + X the other side is: X^2 + 4 Please show steps. Thank you (10 points best answer)-With a square, we

Please complete the square for this equation for 10 points!

Can you please complete the square for this equation: f(x)= x^2-5x+2-Answer: x= Plus or minus the square root of 4.25 plus 2.5 x^2 -5x+2 =0 Minus 2 from both sides To get the term to complete the

How many real solutions does a quadratic have if

-no x-intercepts? -one x-intercepts? -two x-intercepts?-0 1 2

(calculus)Find the maximum volume of a cylinder that will fit inside a sphere of radius 1.

Any light on the matter appreciated.-V(cylinder)=pi(r^2)h And h^2+(2r)^2=4, from the Radius (sphere)=1, diameter = 2 4r^2=4-h^2 r^2=(4-h^2)/4 V= pi(4-h^2)h/4=pi(h)-pi(h^3)/4 V= pi- 3pi(h^2)/4=0 3

Trigonometry Help Needed, 10 points for best solution

Solve the following equation for 0°≤x≤360° sin 3x + 3 cos 2x + sin x = 3 please show a complete working for me to understand, Thank you!-sin 3x + 3 cos 2x + sin x = 3 => 3sinx - 4sin^3 x + 3 (1 - 2

-2(y)^3(w+2)^2 in expanded form

-2(y)^3(w+2)^2 in expanded form I got -2y^3 w^2 + 2w +2w + 4 = -2y^3 w^2 + 4w + 4? Or do I just leave it at -2y^3 w^2 + 2w +2w + 4? Or did I do it totally wrong?--2y³(w+2)² -2y³ (w² + 4w + 4) -2w

How many cubic centimeters of pure acid must you add to 20cc of 30% acid to turn it into a 50% solution

How many cubic centimeters of pure acid must you add to 20cc of 30% acid to turn it into a 50% solution? HW help pretty much. No idea how to do it. Could any one of you kind people help explain it to

Divide and express the result in standard form. 7/(5-i)

The answer must be in the form a+bi i is an imaginary number-7/(5-i)= 7(5+i)/[(5-i)(5+i)]= (35+7i)/[25-i^2] = (35+7i)/26= 35/26 + 7i/26-7(5 + i) / [(5 - i)(5 + i)] (35 + 7i) / (25 - i^2) (35 + 7i)

Factor 21x^2 + 2x - 55

Help....please :)-( 1 - k )(1 + k ) = 21*-55 1 - k^2 = - 1155 1156 = k^2 34 = k - 33 and 35 21x^2 - 33x + 35x - 55 = 3x(7x - 11) + 5(7x - 11) = (3x + 5)(7x - 11)

Why do I see the number 76 EVERYWHERE!!!!!!!!!

I see it everywhere, My Battery %, signs, ads. etc.I see it everywhere !-It means that the number 76 is going to be the death of you. It is going to jump off the computer screen, and throw numbers at

If x = a(cost+tsint) and y = a(sint - t cos t), find d^2y/dx^2

x= a(cos t + t sin t) dx/dt = a(-sint+sin t +t cost) = at.cost y= a(sin t - t cost) dx/dt = a( cos t - cos t + t sin t) = at sin t dy/dx = dy/dt/dx/dt = at sin t/ at sin t = tan t d^2y/dx^2 =

Calculus Arc Length Question

Find the exact length of the curve. x=1+3t^2y=4+2t^30(less than or equal to)t(less than or equal to)pi I use u=t^2 + t^4du=2t + 4t^3 Changing the integral from 0 to 1 To 0 to 2. Ending up with 4u^3/2

Maths trigonometry help?!?

If sin(Theta) = 3/4 and cos(theta) Thanks and please explain-sin(theta) = 3/4 sin^2(theta) = 9/16 => we know that sin^2(theta) + cos^2(theta) = 1 => cos^2(theta) = 1-9/16 => cos^2(theta) = 7/16 => co

Can cube root of x be expressed like this

If cube root of x can be expressed like x^1/3 then cant it also be expressed as x^-3? Also, can x^-3 be expressed as -x^3 ?-∛x = x^(1/3) x^(-3) = 1/x^3-No, two expression your wrote are mutually excl

Data Management Probability Question venn diagrams

100 students are polled. 60 are non-grads, 20 are union members, and 20 are non-union graduates. How many are neither grad nor union members? Please explain. Easy immediate 10 points-it is evident tha