Solve the equation by inserting 7 for x.
Our equation is now y=2.5(7)-1.5
Multiply.
Y=17.5-1.5
Subtract
Y=16
The answer is D. 16
Hope this helps!
I believe that the amount of the instant rebate is $30. X represents the price of the bike, 0.09 is the sales tax.
So if the bike cost $100:
0.09(100) + (100-30) = 9 + 70 = $79
Although I think I would want them to tax the bike after the instant rebate and not on the original price.
If I'm wrong about the instant rebate then it would be 1.09x-30. Hope this helps.
You cut both of the triangle’s out and then you make a rectangle with it and then you do it like a rectangles
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You can actually use either the product rule or the chain rule for this one. Observe:
• Method I:y = cos² xy = cos x · cos xDifferentiate it by applying the product rule:
The derivative of
cos x is
– sin x. So you have
—————
• Method II:You can also treat
y as a composite function:
and then, differentiate
y by applying the chain rule:
For that first derivative with respect to
u, just use the power rule, then you have
and then you get the same answer:
I hope this helps. =)
Tags: <em>derivative chain rule product rule composite function trigonometric trig squared cosine cos differential integral calculus</em>
A isosceles triangle is a triangle who has two sides of the same length