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nirvana33 [79]
3 years ago
12

Simplify by combining like terms. Type the terms in alphabetical order. -7a-2y+7+2y+5a=

Mathematics
1 answer:
alexira [117]3 years ago
3 0

- 2a + 7

...............

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Please help me with this thank you for helping me!^^
ankoles [38]

Answer:

the lightning,square is 1

the heart is 2

the sun,triangle is 3

the moon,star is 4

Step-by-step explanation:

brainliest plz

5 0
3 years ago
Read 2 more answers
2tan(45-A)/1+tan^2(45-A)=cos2a
AVprozaik [17]

Answer:

Let θ = (45 - A)°.

=> 2Tanθ/ 1 + Tan²θ

=> 2Sinθ/Cosθ / 1 + Sin²θ / Cos²θ

=> 2Sinθ/Cosθ/ Cos²θ + Cos²θ / Cos²θ

=> 2Sinθ/Cosθ/ 1 / Cos²θ

=> 2SinθCos²θ/Cosθ

=> 2SinθCosθ  

=> Sin2θ

But we assumed θ = (45 - A)°,

=> Sin2(45 - A)

=> Sin(90  - 2A)  (∵ Sin(90 - θ) = Cosθ)

=> Cos2A

= R.H.S

Hence proved.

Step-by-step explanation:

3 0
3 years ago
Find all values of x (if any) where the tangent line to the graph of the function is horizontal
ratelena [41]

the horizontal tangent line mean y'=0

8 - 2x = 0

x = 4

5 0
3 years ago
Is {(1,2) (3,4) (5,8) (1,4)} a function?
ElenaW [278]
No it is not s function because the 1 in the x values repeats
8 0
3 years ago
Can anyone please explain this to me please ? :)
bonufazy [111]
Hey, personally I don't know but use photomath on your phone.
6 0
3 years ago
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