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2 years ago

14

Jayden is on his boat riding through the Cooper River. He spots the Cooper River Bridge at an angle of elevation of 42⁰. If the

bridge stands 761 feet above Jayden’s viewing point on the boat, what is the horizontal distance from Jayden to the bridge?

1 answer:

andrezito [222]2 years ago

3 0

Answer:

845.2 it no that hard

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amid [387]

D. 60

when subtracting a negative from a positive use KCC
K eep
C hange
C hange

you keep the first number change the subtraction to a addition and make the negative a positive

35-(-25)
=======
35+(-25)
=======
35+25
=======
60

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3 years ago

What is likely to be the subject of a direct geometric proof

notka56 [123]

I think that it is geometry.

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2 years ago

Help on #26 please. State the domain and range

ladessa [460]

Wouldnt the domain be x with the equal cross thingy 3

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2 years ago

Rewrite in Polar Form....<br> x^(2)+y^(2)-6y-8=0

skad [1K]

$\bf x^2+y^2-6y-8=0\qquad 
\begin{cases}
x^2+y^2=r^2\\\\
y=rsin(\theta)
\end{cases}\implies r^2-6rsin(\theta)=8
\\\\\\
\textit{now, we do some grouping}\implies [r^2-6rsin(\theta)]=8
\\\\\\\
[r^2-6rsin(\theta)+\boxed{?}^2]=8\impliedby 
\begin{array}{llll}
\textit{so we need a value there to make}\\
\textit{a perfect square trinomial}
\end{array}$

$\bf 6rsin(\theta)\iff 2\cdot r\cdot \boxed{3\cdot sin(\theta)}\impliedby \textit{so there}
\\\\\\
\textit{now, bear in mind we're just borrowing from zero, 0}
\\\\
\textit{so if we add, \underline{whatever}, we also have to subtract \underline{whatever}}$

$\bf [r^2-6rsin(\theta)\underline{+[3sin(\theta)]^2}]\quad \underline{-[3sin(\theta)]^2}=8\\\\
\left. \qquad \right.\uparrow \\
\textit{so-called "completing the square"}
\\\\\\\
[r-3sin(\theta)]^2=8+[3sin(\theta)]^2\implies [r-3sin(\theta)]^2=8+9sin^2(\theta)
\\\\\\
r-3sin(\theta)=\sqrt{8+9sin^2(\theta)}\implies r=\sqrt{8+9sin^2(\theta)}+3sin(\theta)$

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2 years ago

A bag contains 10 red marbles and 15 green marbles. If yuki selects a marble from the bag without looking,what is the probablity

Ne4ueva [31]

Answer:10/15 chance

Step-by-step explanation:

If there are 10 RED marbles and 15 GREEN marbles it would be the number of red marbles out of the total number of marbles.

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2 years ago

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