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Mekhanik [1.2K]

2 years ago

7

A sector of a circle has a central angle measure of 300. The diameter of the circle is 26 centimeters What is the approximate ar

ea of the sector

1 answer:

stira [4]2 years ago

4 0

(1/2(r^2)(degree)) / 180 = A
FORMULA

(1/2(26^2)(300)) / 180 = 563.333333

ANSWER 563pie

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The general solution of 2 y ln(x)y' = (y^2 + 4)/x is

Sav [38]

Replace $y'$ with $\dfrac{\mathrm dy}{\mathrm dx}$ to see that this ODE is separable:

$2y\ln x\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{y^2+4}x\implies\dfrac{2y}{y^2+4}\,\mathrm dy=\dfrac{\mathrm dx}{x\ln x}$

Integrate both sides; on the left, set $u=y^2+4$ so that $\mathrm du=2y\,\mathrm dy$ ; on the right, set $v=\ln x$ so that $\mathrm dv=\dfrac{\mathrm dx}x$ . Then

$\displaystyle\int\frac{2y}{y^2+4}\,\mathrm dy=\int\dfrac{\mathrm dx}{x\ln x}\iff\int\frac{\mathrm du}u=\int\dfrac{\mathrm dv}v$

$\implies\ln|u|=\ln|v|+C$

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4 0

2 years ago

What is the area of FGH

Dmitrij [34]

54 $in^{2}$

A right triangle is a shape that looks like half of a square. The height of the triangle is 12, and the base of the triangle is 9. To find the area, use the following formula:

A = $\frac{bh}{2}$

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8 0

2 years ago

Evaluate The Exsperession. Show your work<br><br><br>6.7-3^2.9+4^3<br>or

Rom4ik [11]

<em>Answer:</em>

<em>25</em>

<em>Step-by-step explanation:</em>

<em>Hi there !</em>

<em>6×7 - 3²×9 + 4³ =</em>

<em> 1. raise the numbers to power</em>

<em>= 6×7 - 9×9 + 64</em>

<em> 2. we perform the multiplications</em>

<em>= 42 - 81 + 64</em>

<em> 3. we perform addition and subtraction</em>

<em>= (42 + 64) - 81</em>

<em>= 106 - 81</em>

<em>= 25</em>

<em>Good luck !</em>

7 0

3 years ago

Read 2 more answers

Hello pls help meeee<br> )

In-s [12.5K]

Answer:

(4, 1)

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

<u>Algebra I</u>

Terms/Coefficients
Coordinates (x, y)
Solving systems of equations using substitution/elimination

Step-by-step explanation:

<u>Step 1: Define Systems</u>

y = 2x - 7

y = -x + 5

<u>Step 2: Solve for </u><em><u>x</u></em>

<em>Substitution</em>

Substitute in <em>y</em>: 2x - 7 = -x + 5
[Addition Property of Equality] Isolate <em>x</em> terms: 3x - 7 = 5
[Addition Property of Equality] Isolate <em>x</em> term: 3x = 12
[Division Property of Equality] Isolate <em>x</em>: x = 4

<u>Step 3: Solve for </u><em><u>y</u></em>

Define original equation: y = -x + 5
Substitute in <em>x</em>: y = -4 + 5
Add: y = 1

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2 years ago

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros.

butalik [34]

I'll try to understand this but I don't really get it because I'm in middle school

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2 years ago