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3 years ago

Trigonometry, please help thank you

Mathematics

1 answer:

alina1380 [7]3 years ago

8 0

Step-by-step explanation:

<h2>Length of x is 98.2 m</h2><h2 /><h2>Step-by-step explanation:</h2><h2 /><h2>Step 1:</h2><h2 /><h2>Use the trigonometric ratio tan 27° to find the common side of both the right angled triangles.</h2><h2 /><h2>tan 27° = opposite side/adjacent side =</h2><h2 /><h2>opposite side/9</h2><h2 /><h2>Opposite side = 9 tan 27° 9 x 3.27 =</h2><h2 /><h2>-29.46 m</h2><h2 /><h2>Step 2:</h2><h2 /><h2>Use this side and trigonometric ratio cosine to find the value of x.</h2><h2 /><h2>cos 49° = adjacent side/x = -29.46/x</h2><h2 /><h2>x = -29.46/cos 49° -29.46/0.30</h2><h2 /><h2>= 98.2 m (negative value neglected)</h2><h2 /><h2><em><u>Please</u></em><em><u> </u></em><em><u>mark</u></em><em><u> </u></em><em><u> </u></em><em><u>me </u></em><em><u>Brainlist.</u></em></h2>

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goblinko [34]

The answer should be B

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3 years ago

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3 years ago

You are certain to get 3 jacks when selecting 51 cards from a shuffled deck. Express the indicated degree of likelihood as a pro

Colt1911 [192]

Answer:

0.001145

Step-by-step explanation:

Given that you are certain to get 3 jacks when selecting 51 cards from a shuffled deck.

When we draw 3 cards from 51 cards, we keep one card aside

The card can be either Jack or non Jack

Prob (the left over card to be Jack) = P(A) = $\frac{4}{52}$

Prob (the left over card to be non jack ) = P(B) = $\frac{48}{52}$

A and B are mutually exclusive and exhaustive

Let drawing 3 Jacks be the event C

P(C) = P(AC)+P(BC)

$P(AC) = P(A)*P(C/A)\\= \frac{4}{52} (3/51C3)\\=1.108(10^{-5}$

P(BC) = P(B)*P(C/B)\\

= \frac{28}{52} (4/51C3)\\

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Adding we get

P(C)

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3 0

3 years ago

Write an exponential equation in the form y = abx whose graph passes through points (2, 18) and (5, 60.75).

Nataliya [291]

Y = a * b^x
18 = a * b²
60.75 = a * b^5
60.75 = a * b² * b³
60.75 = 18 b³
b³ = 60.75 : 18
b³ = 3.375
b = ∛ 3.375
b = 1.5
18 = a * 1.5²
18 = a * 2.25
a = 18 : 2.25
a = 8
Answer:
y = 8 * 1.5^x

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3 years ago

Tisha brought chocolate and vanilla cupcakes to school for her birthday. 92 students decided to take a cupcake, and 69 of them p

Leokris [45]

Answer:

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Step-by-step explanation:

Think about it like this:

69 out of 92 students picked vanilla, that is the same thing as 69/92.

Remember a fraction sign is the same thing as divide.

When you divide 62/92, you should get .75

.75 is the same thing as 75%

That's you answer!

Hope I helped! :)

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3 years ago