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snow_tiger [21]
3 years ago
6

From 7x^2+5xy-3y^2 subtract the sum of 2x^2+3xy-5y^2 and x^2-7xy-4y^2

Mathematics
1 answer:
Crazy boy [7]3 years ago
5 0

Answer:

  4x^2 +9xy +6y^2

Step-by-step explanation:

Combine like terms. I find it useful to factor out the variable part of the expression so I can see what coefficients are being combined.

  7x^2+5xy-3y^2 - (2x^2+3xy-5y^2 + x^2-7xy-4y^2)

  = (7 -2 -1)x^2 +(5 -3+7)xy +(-3 +5 +4)y^2

  = 4x^2 +9xy +6y^2

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What is the simplified form of the following expression (5/4)^3
Vlad [161]
★ EXPONENTIALLY RESOLVED ★

(5/4)^3

= 5 ( 5 ) ( 5 ) / 4 ( 4 ) (4 )

= 25 ( 5 ) / 16 ( 4 )

= 125 / 64

★✩★✩★✩★✩★✩★✩★✩★✩★✩★✩★
3 0
3 years ago
Need a lil help please
Georgia [21]

Answer:

  • B(2, 4)

Step-by-step explanation:

<u>Given points:</u>

  • A(-1, -9) and M(0.5, -2.5)

Let the coordinates of B are (x, y)

<u>Use midpoint formula to determine the point B:</u>

  • 0.5 = (- 1 + x)/2 ⇒ 1 = -1 + x ⇒ x = 1 + 1 = 2
  • -2.5 = (-9 + y)/2 ⇒ -5 = -9 + y ⇒ y = -5 + 9 = 4

3 0
3 years ago
Which of these numbers is between 1 and 3/4 ?<br><br>PLEASE HELP
Elanso [62]
Since I don't see attachment, I guess the solution will be as follows:

1 & 3/4 , since 1 = 4/4, then it could be rewritten :


4/4 & 3/4, hence between these 2 fraction there is 2/4 or 1/2.
5 0
3 years ago
37-(-3)squared+30\(-3)x2
vampirchik [111]
Simplify: 
37 - (-3)^2  + 30/(-3)x^2
= 37 +  - 9 +  - 10x^2

Combine like terms:
= 37 +  - 9 +  - 10x^2
= ( - 10x^2) + (37 +   - 90
= - 10X^2 + 28
Answer: - 10x^2  +  28



To Factor: 
37 - (- 3)^2 + 30/- 3x^2

- 10x^2 + 28
- 2(5x^2 - 14)

Answer:  - 2(5x^2 - 14)




I simplify, and factor, because, you didn't really specify what you wanted help on with this equation. - Thanks -





Hope that helps!!!!
6 0
3 years ago
Carmen wants to join a gym. Gym A costs $26.76 plus an additional $4 for each visit.
DanielleElmas [232]
Yes the answer is ymb=y your welcome
6 0
3 years ago
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