Is 1/sec^2(θ) the same as cos^2(θ)

Answers

Answer 1

Answer: $(1)/(sec^2\theta)=cos^2\theta\n\nL=(1)/(\left((1)/(cos\theta)\right)^2)=(1)/((1)/(cos^2\theta))=1:(1)/(cos^2\theta)=1\cdot(cos^2\theta)/(1)=cos^2\theta=R$

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Use Gaussian elimination to solve the following system of linear equations -2x_1+3x_2 + x_3 = 2 -3x_1+4x_2 + 2x_3 = 2 x_1-5x_2+4x_3 = -9 -2x_1+4x_2-4x_3 = 8

Divide.6,859 ÷ 79

The quotient is

and the remainder is
.

Answers

Answer:

86, 65

Step-by-step explanation:

Quotient is 86

Remainder is 65

ABCD is a rectangle. find m <AEB

Answers

Answer:

$\Rightarrow m\angle AEB=130^(\circ)$

Step-by-step explanation:

As ABCD is a rectangle. So each angle of the rectangle is 90° and $m\angle EAD=65^(\circ)$ , so

$m\angle EAB=90^(\circ)-65^(\circ)=25^(\circ)$

The diagonals of the rectangle bisects each other. Hence,

$\Rightarrow AE=BE$

In a triangle if two sides are equal then the angles opposite them will be equal.

So in triangle AEB,

$m\angle EBA=m\angle EAB=25^(\circ)$

As the sum of the angles in a triangle adds up to 180°, so

$\Rightarrow m\angle EBA+m\angle EAB+m\angle AEB=180^(\circ)$

$\Rightarrow m\angle AEB=180^(\circ)- m\angle EBA-m\angle EAB$

$\Rightarrow m\angle AEB=180^(\circ)-25^(\circ)-25^(\circ)=130^(\circ)$

Remove all grouping symbols and combine like terms.( 3x + x ^2) - { 4x^2 - 3x +[ 2x^2 - x - (5x^2 + 4x)]}
Thank you

Answers

$(3x+x^2)-\{4x^2-3x+[2x^2-x-(5x^2+4x)]\}\n\n=3x+x^2-\{4x^2-3x+[2x^2-x-5x^2-4x]\}\n\n=3x+x^2-\{4x^2-3x+[-3x^2-5x]\}\n\n=3x+x^2-\{4x^2-3x-3x^2-5x\}\n\n=3x+x^2-\{x^2-8x\}\n\n=3x+x^2-x^2+8x\n\n=11x$

$( 3x + x ^2) - (4x^2 - 3x +(2x^2 - x - (5x^2 + 4x)))=\n 3x+x^2-4x^2+3x-(2x^2-x-5x^2-4x)=\n -3x^2+6x-2x^2+x+5x^2+4x=\n 11x$

Cómo se puede describir a la regla o patrón de una sucesión .? *a)Expresión de números cortos.
b)Expresión algebraica.
c)Expresión multiple.

Answers

¡Hola! Creo que tu respuesta es una expresión algebraica B, aunque no estoy 100% seguro. ¡Espero que esto te ayude! Buena suerte y que tengas un gran día. ❤️

Felipe has saved $625. He is starting a part-time job that pays him $150 a week, and he plans to save all of the money he earns. Which algebraic expression represents Felipe's total savings after x weeks? A.625x + 125 B.775x C.150x + 625 D.125x - 650

Answers

The answer is C, 150x+625
Where x is the number of weeks

Answer:

The correct answer is C. 150x + 625 because x equals the total number of weeks. Hope this helps!

The sum of a number and 19 is at least 8.2.

Answers

Well the equation for this is = x+19>=8.2

X = a number which is the sum | it says and so that's + 19 is at least 8.2 so this means is = to 8.2. Your equation should be set up like this : x+19=8.2.

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