Simplify -3·-8 hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

Mathematics

1 answer:

shtirl [24]3 years ago

4 0

Answer:

Step-by-step explanation:

A negative integer times a negative integer is the same as a positive integer times a positive integer, so this would be the same as (8)(3) which is 24.

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Answer:

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Step-by-step explanation:

H will be shifted down 2 units and then reflected over y = 1, which maps H into itself

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What is the length of the major axis of the ellipse (x-7)^2/4+(y+3)^2/16=1

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$\bf \begin{array}{llll}
\cfrac{(x-{{ h}})^2}{{{ a}}^2}+\cfrac{(y-{{ k}})^2}{{{ b}}^2}=1\\\\ \cfrac{(x-{{ h}})^2}{{{ b}}^2}+\cfrac{(y-{{ k}})^2}{{{ a}}^2}=1
\end{array}\quad 
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What values of x make the equation x2 + 9x – 22 = 0 true? Check all that apply. –11 –2 0 2 11

Marat540 [252]

Answer: x = 2 ; -11 .
___________________________________
Explanation:
_____________________________________________
Given the equation:
_____________________________________________
x² + 9x − 22 = 0 ; Solve for: "x" ;
_____________________________________________

Let us factor the "left-hand side" of the equation:
_____________________________________________
"x² + 9x − 22" ;
_____________________________________________

What are the factors of "-22"" that add up to "positive 9" ?
_____________________________________________
Let us list the factors of "-22" :
____________________________________________
-2, 11; → -2 + 11 = 9 ;
-11, 2; → -11 + 2 = -9 ;
____________________________________________

So we have: "-2" and "11" ;
____________________________________________
So; "x² + 9x − 22" ; factors into " (x−2)(x + 11)" ;
____________________________________________
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So: x − 2 = 0 ;

Add "2" to each side of the equation;

x − 2 + 2 = 0 + 2 ;

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x + 11 = 0 ;

Subtract "11" from each side of the equation;

x + 11 − 11 = 0 − 11 ;

x = -11 ;
___________________________________
Answer: x = 2 ; -11 .
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