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nexus9112 [7]
3 years ago
10

HELP ME FASTTTTTTT !!!!!!!!!!!!!!!!!!!!!!!!!

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

Answer:

50 degrees ( Vertically opposite)

Hope it helps

Step-by-step explanation:

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1.) D

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15x^2 - 25 answer with a complete sentence
zubka84 [21]

Answer:

No, the following expression is not a difference of squares. Binomial can not be factored as the  difference of two perfect squares. 3 is not a square.

Step-by-step explanation:

Factor

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(15x)^2(-5)^5

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5(3x^2-5)

"Theory:

A difference of two perfect squares,  A2 - B2  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =

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        A2 - B2

Note :  AB = BA is the commutative property of multiplication.

Note :  - AB + AB equals zero and is therefore eliminated from the expression."

I put a picture to help u understand.

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3 years ago
A carpenter makes legs for 3-legged stools and 4-legged tables. He makes a total of 57 legs.
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4 legged tables : x 3 legged stools : y x + y = 20 y= 20 - x 4x + 3y = 68 Replace y by 20 - x so we only have one letter 4x + 3(20 - x) =68 4x + 60 - 3x =68 x + 60 = 68 x = 8 To find y replace x by 8 y = 20 - 8 y = 12 So you have 8 four legged chairs and 12 three legged stools. Hope I helped!
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