PLS HURRY! 9TH GRADE ALGEBRA :/ (edmentummmm) I AM GIVING BRAINLIEST FOR CORRECT ANSWERS!!
1 answer:
<u>Answer:</u>
- Option A (-26x² + 56x - 15) is correct.
<u>Step-by-step explanation:</u>
- [3x(-2x + 7)] - [5(x - 1)(4x - 3)]
- => [-6x² + 21x] - [(5)(x - 1)(4x - 3)]
- => [-6x² + 21x] - [(5x - 5)(4x - 3)]
- => [-6x² + 21x] - [20x² - 15x - 20x + 15]
- => -6x² + 21x - 20x² + 15x + 20x - 15
- => -26x² + 56x - 15
Hence, <u>Option A (-26x² + 56x - 15) is correct.</u>
Hoped this helped.
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The correct answer is: [B]: " 9.6 cm " .
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Explanation:
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Let "FH" = "x" ; for which we wish to solve.
45 cm / 12 cm = 36 cm / "x" (in "cm") ;
To solve for "x" ;
Cross--multiply:
Note: Given:
"
" ; " ad = bc " ; (b ≠ 0 ; d ≠ 0) ;
So: " 45x = 12 * 36 " ;
→ 45x = 432 ;
Divide each side of the equation by "45" ;
to isolate "x" on one side of the equation; & to solve for "x" ;
→ 45x / 45 = 432 / 45 ;
→ x = 9.6 cm ;
___________________________________________________________
→ which corresponds with:
___________________________________________________________
→ Answer choice: [B]: " 9.6 cm " .
___________________________________________________________
Hope this answer — and explanation — helps!
Best wishes in your academic pursuits!
___________________________________________________________
____________________________________________________________
Explanation:
____________________________________________________________
Let "FH" = "x" ; for which we wish to solve.
45 cm / 12 cm = 36 cm / "x" (in "cm") ;
To solve for "x" ;
Cross--multiply:
Note: Given:
"
So: " 45x = 12 * 36 " ;
→ 45x = 432 ;
Divide each side of the equation by "45" ;
to isolate "x" on one side of the equation; & to solve for "x" ;
→ 45x / 45 = 432 / 45 ;
→ x = 9.6 cm ;
___________________________________________________________
→ which corresponds with:
___________________________________________________________
→ Answer choice: [B]: " 9.6 cm " .
___________________________________________________________
Hope this answer — and explanation — helps!
Best wishes in your academic pursuits!
___________________________________________________________