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alukav5142 [94]
2 years ago
12

What is the value of f(1) when f(x)=3x^3-2x^2-3x+18

Mathematics
1 answer:
Aleonysh [2.5K]2 years ago
4 0

Answer:

f(1) = 16

Step-by-step explanation:

f(1) = 3(1)^{2} -2(1)^{2} -3(1)+18

f(1) = 3-2-3+18

f(1) = 16

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If the angle of elevation of the sun is 61.7° when a building casts a shadow of 56.5 feet, what is the height of the building ro
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SOLUTION

Let us use a simple diagram to interprete the question

In the diagram above, the dark stuff below represents the shadow and the rectangular bar represents the building. I have labelled the height of the building as h.

So we will use the right-angled triangle formed to find h

As we can see h represents the opposite side and 56.5 feet represents the adjacent side of the right-angle triangle. So we will use TOA

\text{TOA tan }\theta=\frac{opposite}{\text{adjacent}}

So we have

\begin{gathered} \text{ tan }\theta=\frac{opposite}{\text{adjacent}} \\ \text{ tan }61.7\degree=\frac{h}{56.5} \\ 1.8572015=\frac{h}{56.5} \\ \text{cross multiplying, we have } \\ h=1.8572015\times56.5 \\ h=104.931887 \end{gathered}

Hence the answer is 104.9 feet to the nearest tenth

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1 year ago
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KonstantinChe [14]
The answer is 3/4. You divide both numbers (54 and 72) by 18 and you get 3/4. Hope it helps!
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Answer:

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Step-by-step explanation:

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