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2 years ago

Consider the following system of equations:

Mathematics

1 answer:

monitta2 years ago

8 0

Answer:

Step-by-step explanation:

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A circle has a radius of 4.2 cm.

patriot [66]

Step-by-step explanation:

r=4.2

cicumference of circle =2Πr=2×3.14×4.2=26.3

8 0

3 years ago

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

7 0

3 years ago

I need help plssssss

Andrew [12]

Answer:

i cant see the image?

Step-by-step explanation:

if someone can please tell me what is shows

4 0

2 years ago

This graph shows how the length of time a kayak is rented is related to the rental cost what is the rate of change shown in the

Evgesh-ka [11]

Its 8$ per hour or 8/1 hour because if you line it up every hour it increases by $8

5 0

3 years ago

Read 2 more answers

Calculate the side lengths a and b to two decimal places. Will give five stars and brainliest to the first answer!!!!! Need help

garri49 [273]

Answer:

Using the Sine Rule , which states that

$\frac{a}{Sin A}=\frac{b}{Sin B}=\frac{c}{SinC}$

In Δ ABC

∠A +∠B+∠C=180°→→Angle Sum Property of Triangle

72°+85°+∠C=180°

∠C=180° - 157°

∠C= 23°

All the angles are in degrees.

$\frac{a}{Sin 72}=\frac{b}{Sin 85}=\frac{6.2}{Sin 23}$

Using the table of Sine, Calculating Sine Values

Sin 72°= 0.9510

Sin 85°=0.996

Sin 23°=0.390

$\frac{a}{0.951}=\frac{b}{0.996}=\frac{6.2}{0.390}\\\\ a=\frac{6.2 * 0.951}{0.390}= 15.118\\\\ b=\frac{6.2 * 0.996}{0.390}=15.833$

Among the five Options,

Option E: a= 15.09 and b=15.81 is approximately true.

7 0

3 years ago

Read 2 more answers