My prediction would be 1,659 defective brakes. I hope this helps you
Tan(x)= sin(x)/cos(x), therefore, substitute sin(x)/cos(x) in the expression:
=(cos(x)(sin(x)/cos(x))-1)/cos^2(x)
simplify the 2 cos(x):
=(sin(x)-1)/cos^2(x)
Sin^2(x)+ cos^2(x)=1, sin^2(x)-1=- cos^2(x), substitute in the expression:
= -cos^2(x)/cos^2(x)= -1
It’s bull Peter C your welcome :)
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Hello!</h2>
The answer is:
The expression for the number of sweets that Sara and Tim have now, are:

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Why?</h2>
To write the expressions for the number of sweets that Sara and Tim have now, we need to follow the next steps:
Sara starts with 24 sweets and Tim starts with 24 sweets

Then, Sara gives Tim x Sweets

Then. Sara eats 7 of her Sweets

Then, Tim eats half of his sweets

So, the expression for the number of sweets that Sara and Tim have now, are:

Have a nice day!
The equation you can use is x + 3x = 428 with x as the number of cheeseburgers and 3x the number of hamburgers
you solve for x and get 4x= 428 and x=107
so 321 hamburgers were sold that day.