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2 years ago

4. The two trapezoids below are similar. What is the

Mathematics

1 answer:

nalin [4]2 years ago

7 0

It has to B A because always come first

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3 years ago

From the lighthouse 1000 ft above sea level the angle of depression to boat a is 29 degress.a little bit later the boat moved cl

AnnyKZ [126]

Answer: The boat moved 768.51 feet in that time .

Step-by-step explanation:

Since we have given that

Height of the lighthouse = 1000 feet

Angle depression to boat 'a' = 29°

Angle of depression to shore 'b' = 44°

Consider ΔABC,

$\tan 44\textdegree=\frac{AB}{BC}\\\\\tan 44\textdegree=\frac{1000}{BC}\\\\BC=\frac{1000}{\tan 44\textdegree}\\\\BC=1035.53\ feet$

Now, Consider, ΔABD,

$\tan 29\textdegree=\frac{AB}{BD}\\\\\tan 29\textdegree=\frac{1000}{BD}\\\\BD=\frac{1000}{\tan 29\textdegree}\\\\BD=1804.04\ feet$

We need to find the distance that the boat moved in that time i.e. BC

so,

$DC=BD-BC\\\\CD=1804.04-1035.53\\\\CD=768.51\ feet$

Hence, the boat moved 768.51 feet in that time .

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3 years ago

Which expression is the factored form of −1.5w+7.5 ?

tresset_1 [31]

The correct answer is C) -1.5(w-5).

Both numbers are divisible by 1.5. Since there is a negative in the first term, we will factor that out as well. This means we are dividing both terms by -1.5:

-1.5( )

Taking -1.5 out of -1.5w, we have w left:

-1.5(w )

Dividing 7.5 by -1.5, we have -5:

-1.5(w-5)

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3 years ago

I need help with this question

Svetradugi [14.3K]

U have to find the slope
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