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Dafna11 [192]
3 years ago
11

PLS HURRY! 9TH GRADE ALGEBRA :/ (edmentummmm) I AM GIVING BRAINLIEST FOR CORRECT ANSWERS!!

Mathematics
1 answer:
aleksley [76]3 years ago
4 0

<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.

BrainiacUser1357

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Need the answer been stuck on this
8090 [49]

Answer:

19 cm³

Step-by-step explanation:

The figure cam be decomposed into two cuboid.

✔️Dimension of cuboid 1:

L = 2 cm

W = 1 cm

H = 8 - 3 = 5 cm

Volume = L * W * H

Volume = 2*1*5 = 10 cm³

✔️Dimension of cuboid 2:

L = 3 cm

W = 1 cm

H = 3 cm

Volume = L*W*H = 3*1*3

Volume = 9 cm³

✅Volume of the irregular figure = 10 + 9 = 19 cm³

8 0
3 years ago
Someone please help me
iogann1982 [59]
The correct answer is:  [B]:  " 9.6 cm " . 
____________________________________________________________

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:   

" \frac{a}{b} =  \frac{c}{d} " ;  " 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!
___________________________________________________________
8 0
4 years ago
Give an example of an integer and its opposite.
prisoha [69]
An integer is a whole number. Two integers are opposite if they have the same distance away from zero. For example,
2 and -2
or
28 and -28
Those are all integers and opposites.

Hope this helps :)
4 0
3 years ago
Read 2 more answers
The ratio of the number of boys to girls the number of girls in the school 729 and there are 1248 students in the school how man
DerKrebs [107]

Answer:

<em> 1005 girls</em>

Step-by-step explanation:

From the question we are given ratio of boys to girls as 7 : 29

Total ratio will be 7 + 29 = 36

Total students in the school = 1248 students

Number of girls in the school = 29/36 * 1248

Number of girls in the school = 29 * 35

Number of girls in the school  = 1005

<em>Hence the approximate total number of girls in the school is 1005 girls</em>

<em></em>

<em>Note that the ratio was assumed since we are not given in question</em>

6 0
4 years ago
Combine like terms to create an equivalent expression.
zvonat [6]

Answer:

ytg4f3udy2iujsjwrhubygjrkgthjeyiulk4g;5tpyoih5jeklg5g45h5y4mjtgrety87gi3h4h5gt4f526h37uj65y

Step-by-step explanation:

5 0
4 years ago
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