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Harrizon [31]
3 years ago
14

QUICK can anyone help me. Big points for right answers.

Mathematics
1 answer:
klemol [59]3 years ago
7 0
No13.
Answer:
Cos(x+x)=cosx*cosx-sinx*sinx
=cos2(x)-sin2(x)
=(cosx+sinx)(cosx-sinx)
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Write an algebraic expression for the given quantity. Let x represent the unknown value.
Lelechka [254]

Answer:

Step-by-step explanation:

There is no equal sign.

1/2 x - 5*x

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7 0
3 years ago
Y= x^2-4x+3 in vertex form
Karolina [17]

Answer:

y=(x-2)^2-1

Step-by-step explanation:

<u>Complete the square</u>

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4 0
2 years ago
BRAINLIESTT ASAP! PLEASE HELP ME :)
alukav5142 [94]

Answer:

216 min

3 hours and 36 min or 3.6 hours

Step-by-step explanation:

1/9+1/6

6+9/54

15/54

5/18

18/5

60*18/5

1080/5

/= fraction sign

3.6 hours

Step-by-step explanation:

Blake can do work in hours = 9

Blake can do a part of work in 1 hour = 1/9

Ned can paint the same room in six hours.

Ned can do a part of work in 1 hour = 1/6

They can do a part of work together in 1 hour =  1/9+1/6

                                                                          = 5/18  

Now they can do 5/18}  part of work in hour = 1

So, they can do whole work in hours =  1/5/18

                                                            =  3.6

Hence it will take 3.6 hours to paint the room if they work together.

7 0
3 years ago
I will mark brainliest please help me on this question! ​
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It’s option a I have done the assignment myself
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3 years ago
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It's C or A if it's C that's right if it's A I'm wrong be pretty sure it is C

5 0
3 years ago
Read 2 more answers
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