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mr Goodwill [35]

2 years ago

5

A helicopter is 105 ft. above sea level, while a submarine is directly underneath the helicopter and has a position of 62 ft. be

low sea level. Which expression will correctly calculate the distance between the helicopter and the submarine?

1 answer:

chubhunter [2.5K]2 years ago

4 0

167 feet is the difference between positions

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In rectangle ABCD, AC = -x + 21, BP = -9x + 19, and DP = -y + 5. Find the value of y.

creativ13 [48]

Answer:

y=-5

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

The diagonals of a rectangle are equal and bisect each other

so

$BP=\frac{1}{2}AC$

$DP=BP$

step 1

Find the value of x

$BP=\frac{1}{2}AC$

substitute the given values

$(-9x+19)=\frac{1}{2} (-x+21)$

solve for x

Multiply by 2 both sides

$-18x+38=-x+21$

$18x-x=38-21\\17x=17\\x=1$

step 2

Find the value of y

$DP=BP$

we have

$BP=-9x+19$

$DP=-y+5$

substitute

$-y+5=-9x+19$

substitute the value of x

$-y+5=-9(1)+19\\-y+5=10\\y=5-10\\y=-5$

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3 years ago

Please help me find y

sertanlavr [38]

Answer:

5

Step-by-step explanation:

cos 60° = y / 10

y = 10 * 1/2 = 5

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Slope: ( -1, 5 ) and ( 2, -3 ).

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Slope of a line passing through these two points is $\frac{-3-5}{2-(-1)}=-\frac{8}{3}$ .

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