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ddd [48]
3 years ago
8

Can someone help me????​

Mathematics
1 answer:
Lelu [443]3 years ago
5 0

Answer:

                       

Step-by-step explanation:

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<span>Let's analyze Hannah's work, step-by-step, to see if she made any mistakes. 

</span>In Step 1, Hannah wrote \dfrac{d}{dx} (-3+8x) <span> as the sum of two separate derivatives </span>\dfrac{d}{dx}(-3)+ \dfrac{d}{dx} (8x) <span>using the </span><span>sum rule.
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This step is perfectly fine. 

In Step 2, \dfrac{d}{dx}(8x) was kept as it is, and \dfrac{d}{dx}(-3) was rewritten as 0 using the constant rule.Indeed, according to the constant rule, the derivative of a constant number is equal to zero.

This step is perfectly fine. 

In Step 3, \dfrac{d}{dx} (8x)  was rewritten as \dfrac{d}{dx}(8) \dfrac{d}{dx}(x) supposedly using the constant multiple rule.

The problem is that according to the constant multiple rule, \dfrac{d}{dx}(8x)&#10; should be rewritten as 8 \dfrac{d}{dx}(x) and not as \dfrac{d}{dx}(8)\dfrac{d}{dx}(x).  

<span>Therefore, Hannah made a mistake in this step.</span>
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Monica’s retirement party cost two dollars, plus an additional three dollars for every guess she invites. If there are 16 guests
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Answer:

TWO BUCKS?? ballin on a budget

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Using the linear regression calculator :

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Slope = 0.3 ; intercept, c = 18.3

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11x^3 + 15x^2 - 25x + 7 = 0​
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Answer:

x1 = −2.414

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