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snow_tiger [21]
2 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]2 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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How to do this problem
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6 0
3 years ago
Find the volume of the following figure. <br><br> 6 cm3 <br> 7 cm3 <br> 8 cm3 <br> 5 cm3
Cerrena [4.2K]

Answer:

7 cm³

Step-by-step explanation:

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5 0
1 year ago
PLEEEEEEEEASE HELP! How the heck do i figure this out!!!?<br> Find m
Fiesta28 [93]
Here is how you find the answer. 
Do remember that the term Bisect means to cut it in half.
So here it goes.
<span>5x = 3x + 10
5x - 3x = 10
2x = 10
x = 5
Then, substitute the values, so 5*5 or 3*5+10
Then, the answer for each smaller angle is 25.
</span>Remember bisect? so 25 x 2 so the final answer is 50.
Hope this is the answer that you are looking for. Thanks for posting your question!
4 0
3 years ago
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