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8_murik_8 [283]
3 years ago
8

Please solve this and show how you did it. Thanks!!!

Mathematics
1 answer:
djyliett [7]3 years ago
4 0
Simplify both sides of the inequality
-2/5x - 9< 9/10
Add 9 to both sides
-2/5x<99/10
Multiply each side by 5/-2
Answer: x> -99/4
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How much money do winners go home with from the television show Jeopardy? To determine an answer, a random sample of winners was
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Step-by-step explanation:

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Look at the figure rectangle PQRS, find m angel P
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3 years ago
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I need to find the derivative. I’m not very good at this so I am answer asap would be sosososo helpful
Bingel [31]

Answer:

See below.

Step-by-step explanation:

First, notice that this is a composition of functions. For instance, let's let f(x)=\sqrt{x} and g(x)=7x^2+4x+1. Then, the given equation is essentially f(g(x))=\sqrt{7x^2+4x+1}. Thus, we can use the chain rule.

Recall the chain rule: \frac{d}{dx}[f(g(x))]=f'(g(x))\cdot g'(x). So, let's find the derivative of each function:

f(x)=\sqrt{x}=x^\frac{1}{2}

We can use the Power Rule here:

f'(x)=(x^\frac{1}{2})'=\frac{1}{2}(x^{-\frac{1}{2}  })=\frac{1}{2\sqrt{x}}

Now:

g(x)=7x^2+4x+1

Again, use the Power Rule and Sum Rule

g'(x)=(7x^2+4x+1)'=(7x^2)'+(4x)'+(1)'=14x+4

Now, we can put them together:

y'=f'(g(x))\cdot g'(x)=\frac{1}{2\sqrt{g(x)}} \cdot (14x+4)

y'=\frac{14x+4}{2\sqrt{7x^2+4x+1} } =\frac{7x+2}{\sqrt{7x^2+4x+1} }

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3 years ago
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Answer: A

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