Please help me with all of them or at least 2 of them? Thank you so much.

Mathematics

1 answer:

LUCKY_DIMON [66]3 years ago

6 0

First one is 3/8>1/3
Second one is B
Third one is C
Fourth one is B

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A tailor earns (12y² + y – 35) pesos for working (3y – 5) hours. How much does he earn per hour?

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4y+7

Step-by-step explanation:

(12y² + y – 35)/(3y – 5)

=(3y-5)(4y+7)/(3y-5) (factorization)

=4y + 7

Hope this helped!

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Step-by-step explanation:

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3 years ago

Which ones do I choose

weeeeeb [17]

It should be B because is a minus is in front of something that is a negative they change to be positive

7 0

3 years ago

I NEED HELP PLEASE, THANKS! :)

Elena L [17]

Answer:

First option is the right choice.

Step-by-step explanation:

$\frac{1}{\cos \left(x\right)+1}+\frac{1}{\cos \left(x\right)-1}\\\\\frac{\cos \left(x\right)-1}{\left(\cos \left(x\right)+1\right)\left(\cos \left(x\right)-1\right)}+\frac{\cos \left(x\right)+1}{\left(\cos \left(x\right)+1\right)\left(\cos \left(x\right)-1\right)}\\\\=\frac{\cos \left(x\right)-1+\cos \left(x\right)+1}{\left(\cos \left(x\right)+1\right)\left(\cos \left(x\right)-1\right)}\\\\=\frac{2cos\left(x\right)}{cos^2\left(x\right)-1}\\\\=\frac{2cos\left(x\right)}{sin^2\left(x\right)}$

$=2\cdot \frac{cos\left(x\right)}{sin\left(x\right)}\cdot \frac{1}{sin\left(x\right)}\\\\=-2cot(x)csc(x)$

Best Regards!

7 0

3 years ago

(Smallest to Largest) 1.8 , 0.8 , 8 , 8.1

Natasha_Volkova [10]

.8, 1.8, 8, 8.1

Do you understand why? This seems pretty simple that you should be able to solve this for yourself.

5 0

3 years ago