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poizon [28]
1 year ago
11

What is the value of |y|+4- y* x if x = 7 and y = -2?

Mathematics
1 answer:
irga5000 [103]1 year ago
8 0

The given expression is

|y|+4-y\cdot x

Let's replace x = 7 and y = -2.

\begin{gathered} |-2|+4-(-2)\cdot7 \\ 2+4+14 \\ 20 \end{gathered}<h2>Therefore, the value of the expression is 20.</h2>
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Two companies Company A and Company B offer the same starting salary of $20,000 per year. Company A gives a raise of $1000 each
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5 0
3 years ago
Find y’ for y=7sec^3x
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Taking the derivative of 7 times secant of x^3:
We take out 7 as a constant focus on secant (x^3)
To take the derivative, we use the chain rule, taking the derivative of the inside, bringing it out, and then the derivative of the original function. For example:
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Knowing this: secant (x^3) becomes tan(x^3) * sec(x^3) * 3x^2. We transform tan(x^3) into sin(x^3)/cos(x^3) since tan(x) = sin(x)/cos(x). Then secant(x^3) becomes 1/cos(x^3) since the secant is the reciprocal of the cosine.

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and multiplying the constant 7 from the beginning:

7 * 3x^2 = 21x^2, so...

our derivative is 21x^2 * sin(x^3)/(cos(x^3))^2


6 0
3 years ago
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