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saveliy_v [14]
2 years ago
7

Number two please! Simplify. Also please explain.

Mathematics
1 answer:
marin [14]2 years ago
3 0

Answer:

<u>2x−15</u>

7x+10

Step-by-step explanation:

3x squared cancels out then you are left with

<u>6x-45</u>

21x+30

then you simplify and get  <u>2x-15</u>

                                            7x+10

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Solve - 3 [ ( x + 2 ) ( x - 1 ) - x ^ { 2 } + 1 ] + 3 ( x - 1 ) (and could you please explain it to me?? I really don't get it.
Mazyrski [523]

Answer:

Step-by-step explanation:

(x+2)(x-1)= x^2+2x-x-2= x^2 +x -2\\\\( x + 2 ) ( x - 1 ) - x ^ { 2 } + 1 =x^2+x-2-x^2+1=x-1\\\\- 3 [ ( x + 2 ) ( x - 1 ) - x ^ { 2 } + 1 ] =-3(x-1)=-3x+3\\\\- 3 [ ( x + 2 ) ( x - 1 ) - x ^ { 2 } + 1 ] + 3 ( x - 1 ) =-3x+3+3x-3=6x\\

5 0
3 years ago
Shawn made a scale drawing of a house and its lot. The scale he used was 13 inches = 5 feet. The backyard is 104 inches in the d
NemiM [27]
13 inches = 5 feet

----------------------------
Find 1 inch:
----------------------------
1 inch = 5/13 feet

----------------------------
Find 104 inches:
----------------------------
104 inches = 5/13 x 104 feet
104 inches = 40 feet

--------------------------------------------------------
Answer: 40 feet
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6 0
4 years ago
This one is about swings so yeaaa
Tpy6a [65]

Answer:

A

Ratio is 2:1

Step-by-step explanation:

8 0
3 years ago
Write the slope intercept form for the equation 2x + y =12?<br> Your answer
777dan777 [17]

Answer:

y= -2x + 12

Step-by-step explanation:

Thanks for letting me answer your question! If you have any more questions feel free to ask me! Have a nice day and please consider making me Brainliest!

4 0
4 years ago
100 POINTS solve the system using linear combination. show all work.{ 5x + 3y = 41 {3x - 6y = 9
PIT_PIT [208]

Answer:

y = 2

x = 7

Explanation:

  • 5x + 3y = 41
  • 3x - 6y = 9

<u>Make the coefficient of "y" in equation 1 same</u>

{ 5x + 3y = 41 } * 2     →  10x + 6y = 82  ........equation 1

                                  →  3x - 6y = 9 ........equation 2

<u>solving them using linear combination</u>

  • 10x + 6y = 82
  • 3x - 6y = 9

     ============

  • 13x = 91
  • x = 7

Find y:

  • 5x + 3y = 41
  • 5(7) + 3y = 41
  • 3y = 41 - 35
  • 3y = 6
  • y = 2
4 0
2 years ago
Read 2 more answers
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