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1 year ago

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Suppose that Andrea told you that “Blake and I started out with the same number of marbles, but I gave him one of mine. Now Blak

e has one more marble than me.” Is Andrea’s reasoning incorrect? If so, how can you help Andrea identify her misunderstanding?

1 answer:

garri49 [273]1 year ago

6 0

Step-by-step explanation:

i know this but i don't have time now

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When the sun is at a certain angle in the sky, a 50-foot building will cast a -foot shadow. What is the length of the shadow in

Serhud [2]

Answer:

0.40 foot

Step-by-step explanation:

In the first case, a 50 - foot building casts a- foot shadow (1-foot). Let the angle of elevation of the sun from the shadow be represented by θ.

Then:

Tan θ = $\frac{opposite}{adjacent}$

Tan θ = $\frac{50}{1}$

Tan θ = 50

⇒ θ = $Tan^{-1}$ 50

= 88.8542

= $88.85^{o}$

The angle of elevation is approximately $88.85^{o}$ .

For a 20-foot pole,

Tan θ = $\frac{opposite}{adjacent}$

Tan $88.85^{o}$ = $\frac{20}{x}$

x = $\frac{20}{Tan 88.85^{o} }$

= 0.4015

= 0.40 foot

The length of the shadow of the pole is 0.40 foot.

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3 years ago

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Answer:

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<h3>Step-by-step explanation:</h3>

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2 years ago

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Line AB contains points A(1,2) and B(-2,6).The slope of line AB is

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(1,2)(-2,6)
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Answer:

Step-by-step explanation:

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(y − 1)(y + 10)(y-6) < 0

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Inequality Form:

y<−10 or 1<y<6

Interval Notation:

(−∞,−10)∪(1,6)

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