3 years ago

Show that angle a is equal to 90 degree

Mathematics

1 answer:

emmasim [6.3K]3 years ago

6 0

Angle a is a right angle and all right angles equal 90°

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Each problem is worth 10 points each. (For each problem show your work and give a brief explanation of how you solved your probl

maxonik [38]

It’s a big problem it’s deserve 20 points you can’t play people make it fair

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3 years ago

Solve this problem <br> 3d+d-7=25/4

creativ13 [48]

If that 25/4 is a fraction them the answer is 53/4. Or in simplest form 3 5/16 or 3.3125

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3 years ago

Read 2 more answers

A potential energy function is given by U = A x3 + B x2 − C x + D . For positive parameters A, B, C, D this potential has two eq

Ivenika [448]

Answer:

7.8655

Step-by-step explanation:

Given the functionl

$U=Ax^3+Bx^2-cx+D$

Where,

$A=1.45J/m^3\\B=2.85J/m^2\\c= 1.7J/m\\D=0.6J$

We have, replacing,

$U=1.45x^3+2.85x^2-1.7x+0.6$

We need to derivate and verify for stable equilibrum that,

$\frac{d^2 U}{dx^2}>0$

Then,

$U'(x) = 4.32x^2+5.7x-1.7$

Roots in,

$x_1=-1.57008\\x_2=0.250636$

We obtain U"(x), then we have

$\frac{d^2U}{dx}=8.64x+5.7$

For $x=-1.57, U"(x)=-7.86549$ Unestable

For $x=0.250636 U"(x)=7.8655>0$ Stable

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3 years ago

X + 2y – 4z = 1<br> -2x – 4y + 4z = 6<br> -4x – 3y – 4z = 21

elena55 [62]

Answer:

x = - 1

y = - 3

z = -2

Step-by-step explanation:

Please see steps in the image attached here.

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3 years ago

The radius of a sphere is 6cm. What is the volume of the sphere? (As pi)

natita [175]

Answer:

288πcm^3

Step-by-step explanation

v=(4/3)πr^3

v=(4/3)π*6^3

v=288πcm^3

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3 years ago

Show that angle a is equal to 90 degree​

Show that angle a is equal to 90 degree